WO2024021574A1 - 3d projection system, projection system, and vehicle - Google Patents

3d projection system, projection system, and vehicle Download PDF

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Publication number
WO2024021574A1
WO2024021574A1 PCT/CN2023/077024 CN2023077024W WO2024021574A1 WO 2024021574 A1 WO2024021574 A1 WO 2024021574A1 CN 2023077024 W CN2023077024 W CN 2023077024W WO 2024021574 A1 WO2024021574 A1 WO 2024021574A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
projection system
light beam
stereoscopic projection
backlight assembly
Prior art date
Application number
PCT/CN2023/077024
Other languages
French (fr)
Chinese (zh)
Inventor
王金蕾
董天浩
常天海
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2024021574A1 publication Critical patent/WO2024021574A1/en

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/18—Stereoscopic photography by simultaneous viewing
    • G03B35/20—Stereoscopic photography by simultaneous viewing using two or more projectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/18—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography

Definitions

  • the present application relates to the field of display, and in particular, to a stereoscopic projection system and a vehicle including the stereoscopic projection system.
  • Stereoscopic display requires providing image information with different parallaxes to both eyes. Compared with 2D display, stereoscopic display can give people a better experience.
  • Naked-eye stereoscopic display technology is also a stereoscopic display solution in which users do not need to wear polarized glasses or shutter glasses.
  • the stereoscopic projection system outputs two channels of imaging light to the user's left and right eyes respectively.
  • the stereoscopic projection system includes 2 projectors and a diffusion screen.
  • the two projectors are used to output two channels of imaging light to the diffusion screen in different output directions.
  • the diffusion screen is used to diffuse two channels of imaging light and output the two channels of imaging light at different angles.
  • the two-channel imaging light output by the diffusion screen irradiates the user's left and right eyes respectively.
  • the two imaging lights carry different image information. Thus providing users with three-dimensional visual enjoyment.
  • This application provides a stereoscopic projection system, a projection system and a vehicle. By sharing the same spatial light modulator, the cost of the stereoscopic projection system can be reduced.
  • a first aspect of this application provides a stereoscopic projection system.
  • Stereoscopic projection systems include backlight components, spatial light modulators and diffusion screens.
  • the backlight assembly is used to output two beams of light at different angles to the spatial light modulator.
  • the spatial light modulator is used to modulate two beams according to different image information to obtain two channels of imaging light.
  • the spatial light modulator is used to output two channels of imaging light to the diffusion screen at different angles.
  • the diffusion screen is used to diffuse two channels of imaging light and output the diffused two channels of imaging light at different angles.
  • the backlight assembly includes a first light source device and a second light source device.
  • the two beams include a first beam and a second beam.
  • the first light source device and the second light source device are used to time-share the output of the first light beam and the second light beam.
  • the first light source device corresponds to the first light beam.
  • the second light source device corresponds to the second light beam.
  • the two light beams include a first light beam and a second light beam.
  • the backlight assembly is configured to output a first light beam at a first position and a second light beam at a second position.
  • the number of light source devices can be reduced, thereby reducing the cost of the stereoscopic projection system.
  • the backlight assembly includes a light source device and an optical element.
  • the position of the light source device relative to the spatial light modulator remains unchanged.
  • the light source device is used to output the original light beam.
  • the optical element is used to obtain the first light beam based on the original light beam at the first position.
  • the optical element is used to change the transmission direction of the original light beam at the second position to obtain the second light beam.
  • the optical element is moved by a moving mechanism. By moving the optical elements and fixing the light source device, the complexity of the moving mechanism can be reduced, thereby reducing the cost of the moving mechanism.
  • the spatial light modulator is located in the overlapping area.
  • the stereoscopic projection system does not need to move the spatial light modulator, thereby reducing the cost of the stereoscopic projection system.
  • the backlight assembly includes a light source device and an optical element.
  • the light source device is used to output the first original light beam at a third position.
  • the optical element is used to obtain the first light beam according to the first original light beam at the first position.
  • the light source device is configured to output the second original light beam at a fourth position.
  • the optical element is used to change the transmission direction of the second original light beam at the second position to obtain the second light beam.
  • the offset amount between the third position and the first position is different from the offset amount between the fourth position and the second position.
  • the third position and the fourth position are located on the first plane.
  • the light source device is used to move from the third position to the fourth position through the first path.
  • the first path is parallel to the first straight line.
  • the first straight line lies on the first plane.
  • the first position and the second position are located on the second plane.
  • the optical element is configured to move from a first position to a second position via a second path.
  • the second path is parallel to the second straight line.
  • the second straight line is located on the second plane.
  • first plane and the second plane are parallel.
  • the first path and the second path are parallel.
  • the length of the second path is less than the length of the first path.
  • the optical element is also used to change the divergence angle of the second original light beam at the second position to obtain the second light beam.
  • the optical element is used to increase the divergence angle of the second original light beam to obtain the second light beam.
  • the distance between the light source device and the spatial light modulator can be reduced. Therefore, this application can reduce the size of the stereoscopic projection system, thereby improving user experience.
  • the optical element is a variable focus device.
  • the optical element can adjust the focal length according to the distance between the user and the diffusion screen, thereby improving the user experience.
  • the backlight assembly is used to move between M positions to output M beams of light at different angles.
  • M beams include two beams.
  • the M positions include the first position and the second position.
  • M positions correspond to M beams one-to-one.
  • M is an integer greater than 1.
  • the stereoscopic projection system further includes a human eye tracking module.
  • the human eye tracking module is used to obtain M viewpoints. There is a one-to-one correspondence between M viewpoints and M positions.
  • the backlight assembly is used to move between M positions out of N positions according to M viewpoints. N positions correspond to N viewpoints. Only M viewpoints among N viewpoints may be viewed by users. By moving only between M locations, the image frame rate for a single user can be improved. Therefore, this application can improve user experience.
  • the value of N ranges from 2 to 10.
  • this application can improve the image frame rate of a single user by limiting the value of N, thereby improving user experience.
  • the stereoscopic projection system includes K backlight assemblies and a spatial light modulator.
  • K is an integer greater than 1.
  • Each of the K backlight assemblies is used to output two beams at different angles to the spatial light modulator. beam, obtaining 2 ⁇ K beams.
  • the spatial light modulator is used to modulate the 2 ⁇ K beam to obtain 2 ⁇ K imaging light.
  • the spatial light modulator is used to output 2 ⁇ K channels of imaging light to the diffusion screen at different angles.
  • the 2 ⁇ K beam includes two beams.
  • the 2 ⁇ K imaging light includes two beams of imaging light.
  • each of the K backlight assemblies moves in the same direction during movement.
  • the complexity of the moving mechanism can be reduced, thereby reducing the cost of the stereoscopic projection system.
  • the backlight assembly during the movement of the backlight assembly from the first position to the second position, or from the second position to the first position, the backlight assembly does not output the light beam.
  • the output beam during movement may produce crosstalk, thus affecting the user experience. Therefore, this application can improve user experience.
  • a second aspect of this application provides a projection system.
  • the projection system includes a curved mirror and the stereoscopic projection system described in the first aspect or any of the optional modes of the first aspect.
  • the stereoscopic projection system is used to output two channels of imaging light.
  • the curved mirror is used to reflect the diffused two-way imaging light, and there is an included angle between the two-way imaging light after reflection.
  • the focal length of the curved mirror is f.
  • the distance between the diffusion screen and the curved mirror is d. d is less than f.
  • the curved mirror can amplify the two imaging lights, thereby reducing the distance between the user and the diffusion screen. Therefore, this application can improve user experience.
  • the third aspect of this application provides a vehicle.
  • the vehicle includes a stereoscopic projection system as described in the foregoing first aspect or any alternative to the first aspect, or a projection system as described in the foregoing second aspect.
  • Stereoscopic projection systems or projection systems are installed on vehicles.
  • Figure 1 is a first structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application
  • Figure 2 is a first structural schematic diagram of a display device provided by an embodiment of the present application.
  • Figure 3 is a second structural schematic diagram of a display device provided by an embodiment of the present application.
  • Figure 4a is a third structural schematic diagram of a display device provided by an embodiment of the present application.
  • Figure 4b is a fourth structural schematic diagram of a display device provided by an embodiment of the present application.
  • Figure 4c is a fifth structural schematic diagram of a display device provided by an embodiment of the present application.
  • Figure 5 is a sixth structural schematic diagram of a display device provided by an embodiment of the present application.
  • Figure 6 is a schematic structural diagram of a backlight assembly provided by an embodiment of the present application.
  • Figure 7 is a second structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application.
  • Figure 8 is a third structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application.
  • Figure 9 is a fourth structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a projection system provided by an embodiment of the present application.
  • Figure 11 is a circuit schematic diagram of a stereoscopic projection system provided by an embodiment of the present application.
  • Figure 12 is a schematic diagram of a projection system installed on a vehicle according to an embodiment of the present application.
  • Figure 13 is a schematic diagram of a possible functional framework of the vehicle provided by the embodiment of the present application.
  • This application provides a stereoscopic projection system, a projection system and a vehicle. By sharing the same spatial light modulator, the cost of the stereoscopic projection system can be reduced.
  • first the terms "first”, “second”, etc. used in this application are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.
  • reference numbers and/or letters are repeated in multiple drawings of the embodiments of this application. Repetition does not indicate various embodiments There is a strictly qualified relationship between and/or configurations.
  • the stereoscopic projection system in this application may also be called a 3D projection system.
  • the stereoscopic projection system in this application is used in the display field. In the field of display, stereoscopic projection systems can be used to provide users with three-dimensional visual enjoyment. However, the stereoscopic projection system includes 2 projectors, and each projector includes 1 spatial light modulator, resulting in a higher cost of the stereoscopic projection system.
  • FIG. 1 is a first structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application.
  • the stereoscopic projection system 100 includes a display device 101 and a diffusion screen 105 .
  • Display device 101 includes a backlight assembly 102, a spatial light modulator 103, and a lens 104.
  • the backlight assembly 102 is used to output two beams of light to the spatial light modulator 103 at different angles in a time-sharing manner.
  • the spatial light modulator 103 can be a liquid crystal display (LCD), liquid crystal on silicon (LCOS) or digital micro-mirror device (DMD), etc.
  • LCD liquid crystal display
  • LCOS liquid crystal on silicon
  • DMD digital micro-mirror device
  • the spatial light modulator 103 is used to modulate two light beams in a time-sharing manner according to different image information to obtain two paths of imaging light. For example, at the first moment, the spatial light modulator 103 is used to modulate the first light beam according to the first image information to obtain the first path of imaging light. At the second moment, the spatial light modulator 103 is used to modulate the second light beam according to the second image information to obtain a second path of imaging light.
  • the solid line with arrows represents the first light beam and the first imaging light
  • the dotted line with arrows represents the second light beam and the second imaging light.
  • the spatial light modulator 103 is used to output two channels of imaging light to the lens 104 at different angles.
  • the lens 104 is used to change the transmission direction of the two imaging lights and transmit the two transmission lights to the diffusion screen 105 .
  • the diffusion screen 105 is used to diffuse two channels of imaging light, and output the diffused two channels of imaging light at different angles.
  • the diffused two-channel imaging light illuminates different viewpoints, such as the user's left and right eyes.
  • the two imaging lights carry different image information. When two channels of imaging light are illuminated to the user's left and right eyes respectively, it can provide the user with three-dimensional visual enjoyment.
  • the spatial light modulator 103 can output two channels of imaging light in a time-sharing manner, thereby providing the user with three-dimensional visual enjoyment. Therefore, embodiments of the present application can reduce the number of spatial light modulators 103 in the stereoscopic projection system, thereby reducing the cost of the stereoscopic projection system.
  • the backlight assembly 102 can output two light beams.
  • the two beams travel in different directions.
  • An exemplary description of possible structures of the backlight assembly 102 is provided below.
  • the backlight assembly 102 includes a plurality of light source devices. Multiple light source devices output two beams in a time-shared manner.
  • FIG. 2 is a first structural schematic diagram of a display device provided by an embodiment of the present application. As shown in FIG. 2 , the display device 101 includes a backlight assembly 102 and a spatial light modulator 103 .
  • the backlight assembly 102 includes a first light source device 201 and a second light source device 202 .
  • the first light source device 201 and the second light source device 202 may be a light emitting diode (LED) light source or a laser diode (LD) light source.
  • LED light emitting diode
  • LD laser diode
  • the first light source device 201 and the second light source device 202 are used to output two beams of light in a time-sharing manner.
  • the first light source device 201 is used to output the first light beam to the spatial light modulator 103 .
  • the second light source device 202 is used to output the second light beam to the spatial light modulator 103 .
  • the spatial light modulator 103 is used to modulate two light beams in a time-sharing manner according to different image information to obtain two paths of imaging light.
  • FIG. 3 is a second structural schematic diagram of a display device provided by an embodiment of the present application.
  • the display device 101 includes a backlight assembly 102 and a spatial light modulator 103 .
  • the backlight assembly 102 moves between position A and position B.
  • the backlight assembly 102 is configured to output the first light beam to the spatial light modulator 103 at position A.
  • the backlight assembly 102 is configured to output the second light beam to the spatial light modulator 103 at position B.
  • the spatial light modulator 103 is used to modulate two light beams in a time-sharing manner according to different image information to obtain two paths of imaging light.
  • the backlight assembly 102 can be moved to output two beams in a time-divided manner. It should be understood that the moving backlight assembly 102 may be part of the components in the moving backlight assembly 102 .
  • the backlight assembly 102 includes a light source device and optical elements. The backlight assembly 102 can output two beams of light in a time-divided manner by moving the optical elements. This is described below.
  • FIG 4a is a third structural schematic diagram of a display device provided by an embodiment of the present application.
  • the display device 101 includes a backlight assembly 102 and a spatial light modulator 103.
  • the backlight assembly 102 includes a light source device 301 and an optical element 302.
  • the light source device 301 is used to output the original light beam to the optical element 302.
  • the optical element 302 may be a lens, a mirror, a prism or a Fresnel mirror, etc.
  • the optical element 302 is used to obtain the first light beam according to the original light beam at the first position.
  • the first light beam irradiates the receiving surface 303 .
  • the spatial light modulator 103 is provided on the receiving surface 303 .
  • the chief ray of the light source device 301 coincides with the X-axis.
  • the optical axis of optical element 302 coincides with the X-axis. Therefore, the chief ray of the light source device 301 and the optical axis of the optical element 302 coincide with each other.
  • the angle ⁇ between the chief ray and the receiving surface 303 is 90°.
  • the display device 101 in this application uses the eccentricity between the chief ray of the light source device 301 and the optical axis position of the optical element 302 (the chief ray of the light source device 301 and the optical axis of the optical element 302 are offset up and down) to change the principal ray of the original light beam. angle, so that the optical element 302 outputs the second light beam in different transmission directions.
  • Figure 4b is a fourth structural schematic diagram of a display device provided by an embodiment of the present application.
  • the optical element 302 is translated upward.
  • the chief ray of the light source device 301 coincides with the X-axis.
  • the optical axis 304 of the optical element 302 is parallel to the X-axis.
  • the optical axis 304 of the optical element 302 is offset upward relative to the chief ray of the light source device 301 . Therefore, the optical element 302 changes the angle of the chief ray of the original light beam (that is, changes the transmission direction of the original light beam) to obtain the second light beam.
  • the angle of the chief ray of the second beam is shifted upward.
  • An upward shift angle will cause the illumination range of the light beam on the receiving surface 303 to move upward.
  • the angle ⁇ between the chief ray of the second light beam and the receiving surface 303 is greater than 90°.
  • Figure 4c is a fifth structural schematic diagram of a display device provided by an embodiment of the present application.
  • the optical element 302 is translated downward.
  • the chief ray of the light source device 301 coincides with the X-axis.
  • the optical axis 304 of the optical element 302 is parallel to the X-axis.
  • the optical axis 304 of the optical element 302 is shifted downward relative to the chief ray of the light source device 301 . Therefore, the optical element 302 changes the angle of the chief ray of the original light beam (that is, changes the transmission direction of the original light beam) to obtain the second light beam.
  • the angle of the chief ray of the second beam is shifted downwards.
  • the downward deflection angle causes the illumination range of the light beam on the receiving surface 303 to move downward.
  • the angle ⁇ between the chief ray of the second light beam and the receiving surface 303 is less than 90°.
  • the position where the optical element 302 is located in FIG. 4a is called the first position, and the position where the optical element 302 is located in FIG. 4b or 4c is called the second position.
  • the time when the optical element 302 stays at the first position is called the first moment.
  • the time when the optical element 302 stays at the second position is called the second moment.
  • the optical element 302 outputs the first light beam at the first position.
  • the optical element 302 outputs the second light beam at the second position.
  • the first light beam and the second light beam output by the optical element 302 are irradiated on the receiving surface 303 in a time-sharing manner. There is an overlapping area in the irradiation range of the first beam and the second beam on the receiving surface 303 .
  • the spatial light modulator 103 may be disposed in the overlapping area.
  • the position where the optical element 302 is located in Figure 4a is the first position
  • the position where the optical element 302 is located in Figure 4b or Figure 4c is the second position.
  • any two different positions of the optical element 302 may be referred to as the first position and the second position.
  • the position of the optical element 302 in FIG. 4b is the first position.
  • the optical element 302 is used to change the transmission direction of the original light beam at the first position to obtain the first light beam.
  • the position of the optical element 302 in Figure 4c is the second position.
  • the optical element 302 is used to change the transmission direction of the original light beam at the second position to obtain a second light beam.
  • the light source device 301 can also be moved so that the irradiation ranges of the first beam and the second beam on the receiving surface 303 overlap as much as possible.
  • FIG. 5 is a sixth structural schematic diagram of a display device provided by an embodiment of the present application.
  • the display device 101 includes a backlight assembly 102 and a spatial light modulator 103 (not shown in the figure).
  • the spatial light modulator 103 is provided on the receiving surface 303 .
  • the backlight assembly 102 includes a light source device 301 and an optical element 302. The backlight assembly 102 can be moved between position A and position B through the moving mechanism.
  • the light source device 301 is located at the third position, and the optical element 302 is located at the first position.
  • the light source device 301 is used to output the first original light beam.
  • the optical element 302 is used to obtain the first light beam according to the first original light beam.
  • the optical axis of the optical element 302 is shifted downward relative to the chief ray of the light source device 301 . Therefore, the angle of the chief ray of the first light beam (indicated by the dashed line connected to the light source device 301 at position A) is shifted downward.
  • the optical element 302 is used to change the transmission direction of the first original light beam to obtain the first light beam.
  • the light source device 301 is located at the fourth position, and the optical element 302 is located at the second position.
  • the light source device 301 is used to output the second original light beam.
  • the optical element 302 is used to obtain the second beam according to the second original beam.
  • the optical axis of the optical element 302 is shifted upward relative to the chief ray of the light source device 301 . Therefore, the angle of the chief ray of the second light beam (indicated by the dashed line connected to the light source device 301 at position B) is shifted upward.
  • the optical element 302 is used to change the transmission direction of the second original light beam to obtain the second light beam.
  • the spatial light modulator 103 reference may be made to the description in any one of the aforementioned figures 1 to 4c.
  • the irradiation ranges of the first light beam and the second light beam on the receiving surface 303 coincide.
  • the size of the irradiation range of the first beam and the second beam on the receiving surface 303 can be as equal as possible to the size of the spatial light modulator 103 . Therefore, the embodiments of the present application improve the utilization rate of light beams.
  • the optical element 302 needs to shift the angle of the chief ray downward.
  • the optical element 302 needs to shift the angle of the chief ray upward. Therefore, the relative position of the third position and the first position is different from the relative position of the fourth position and the second position, that is, the offset amount of the third position and the first position is different from the offset amount of the fourth position and the second position. .
  • the embodiment of the present application requires moving the position of the backlight assembly 102 .
  • the display device 101 may also include a moving mechanism.
  • the moving mechanism is used to move the optical element 302 and/or the light source device 301 .
  • the moving mechanism can move the optical element 302 and/or the light source device 301 in a straight line.
  • FIG. 6 is a schematic structural diagram of a backlight assembly provided by an embodiment of the present application.
  • the backlight assembly 102 includes a light source device 301 and an optical element 302 .
  • the moving mechanism is used to move the backlight assembly 102 from position A to position B.
  • the light source device 301 is used to move from the third position to the fourth position through the first path.
  • the fourth position and the third position are located on the first plane 601.
  • the first path is parallel to the first straight line.
  • the first straight line is located on the first plane 601.
  • the length of the first path is d1.
  • Optical element 302 is used to move from a first position to a second position via a second path.
  • the first position and the second position are located in the second plane 602.
  • the second path is parallel to the second straight line.
  • the second straight line is located on the second plane 602.
  • the length of the second path is d2.
  • d2 is smaller than d1.
  • the second plane 602 may be parallel to the first plane 601 .
  • the second path may be parallel to the first path.
  • the second plane 602 and the first plane 601 may be perpendicular to the chief ray of the light source device 301 .
  • FIGS. 5 and 6 the movement of the backlight assembly 102 from position A to position B is described. It should be understood that in practical applications, in order to provide stable stereoscopic viewing enjoyment, the backlight assembly 102 needs to frequently move between position A and position B. Therefore, regarding the description of the movement of the backlight assembly 102 from position B to position A, reference may be made to the relevant description in FIG. 5 or FIG. 6 . If the backlight assembly 102 outputs light beams during movement, crosstalk may occur, thereby affecting user experience. For this reason, the backlight assembly 102 may not output light beams during movement.
  • the optical element 302 is used to change the transmission direction of the original light beam, thereby outputting the first light beam and the second light beam in different transmission directions.
  • the optical element 302 can also be used to modify The divergence angle of the original beam is changed to obtain the first beam and/or the second beam.
  • the optical element 302 is used to increase the divergence angle of the first original light beam to obtain the first light beam.
  • the optical element 302 is used to increase the divergence angle of the second original light beam to obtain the second light beam.
  • the distance between the light source device 301 and the spatial light modulator 103 can be reduced. Therefore, embodiments of the present application can reduce the size of the stereoscopic projection system, thereby improving user experience.
  • the backlight assembly 102 is used to move between position A and position B. In practical applications, the backlight assembly 102 may be used to move between M positions.
  • the backlight assembly 102 is used to output M beams at different angles.
  • the M beams include a first beam and a second beam.
  • the M positions include the first position and the second position.
  • M positions correspond to M beams one-to-one.
  • M is an integer greater than 1. The following description takes M equal to 3 as an example.
  • FIG. 7 is a second structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application.
  • the stereoscopic projection system 100 includes a display device 101 and a diffusion screen 105 .
  • Display device 101 includes a backlight assembly 102, a spatial light modulator 103, and a lens 104. Through the moving mechanism, the backlight assembly 102 can be moved between position A, position B and position C.
  • the light source device 301 is at the fifth position, and the optical element 302 is at the sixth position.
  • the light source device 301 is used to output the third original light beam.
  • the optical element 302 is used to obtain the third beam according to the third original beam.
  • the spatial light modulator 103 is used to modulate the first light beam, the second light beam and the third light beam to obtain three paths of imaging light.
  • the lens 104 is used to change the transmission direction of the three-way imaging light.
  • Three imaging lights illuminate three viewpoints.
  • the three imaging lights correspond to the three viewpoints one-to-one.
  • the three viewpoints include viewpoint 1, viewpoint 2 and viewpoint 3.
  • M is equal to 3 as an example for description. In practical applications, M can also be other values, for example, M is equal to 4, 6 or 8, etc.
  • M positions correspond to M viewpoints.
  • Position B corresponds to viewpoint 1.
  • Position A corresponds to viewpoint 3.
  • Position C corresponds to viewpoint 2.
  • Each of the M viewpoints may correspond to one eye of the user. Any two viewpoints among the M viewpoints correspond to a viewing position.
  • viewpoint 1 corresponds to the user's left eye
  • viewpoint 2 corresponds to the user's right eye.
  • Viewpoint 1 and Viewpoint 2 correspond to viewing position 1.
  • viewpoint 2 corresponds to the user's left eye
  • viewpoint 3 corresponds to the user's right eye.
  • Viewpoint 2 and Viewpoint 3 correspond to viewing position 2.
  • the stereoscopic projection system 100 may also include an eye tracking module and a processor.
  • the human eye tracking module is used to obtain M viewpoints, such as the coordinates of M viewpoints.
  • M viewpoints such as the coordinates of M viewpoints.
  • the processor is used to control the backlight assembly to move between M positions among the N positions according to the M viewpoints.
  • N 3 and M equal to 2 as an example.
  • FIG. 8 is a third structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application.
  • the stereoscopic projection system 100 also includes an eye tracking module 802 and a processor 801 .
  • the human eye tracking module 802 is used to obtain M viewpoints.
  • the M viewpoints include viewpoint 1 and viewpoint 2.
  • Viewpoint 1 corresponds to position A.
  • Viewpoint 2 corresponds to position C.
  • the processor 801 is used to control the backlight assembly 102 to move between M positions among the N positions according to M viewpoints.
  • the N positions include position A, position B and position C respectively.
  • the M locations include location A and location C.
  • FIG. 8 is only an example of the M locations provided in the embodiment of the present application.
  • the processor 801 can control the backlight assembly 102 to move between corresponding M positions according to M viewpoints.
  • M viewpoints include viewpoint 2 and viewpoint 3.
  • the M locations include location B and location C.
  • the M viewpoints include viewpoint 1 and viewpoint 3.
  • the M locations include location B and location A.
  • N can range from 2 to 10.
  • the value of N can be 2 or 10.
  • whether the M positions include the target position may be determined in the following manner. Specifically, if the backlight assembly stays at the target position and the backlight assembly transmits the light beam to the spatial light modulator 103 at the target position, then the M positions include the target position.
  • backlight assembly 102 moves between position A and position C.
  • the backlight assembly 102 stays in position A for 1 millisecond.
  • the backlight assembly 102 outputs the first light beam.
  • the backlight assembly 102 takes 1 millisecond to move from position A to position C.
  • the backlight assembly 102 stays in position C for 1 millisecond.
  • the backlight assembly 102 outputs the second light beam.
  • the backlight assembly 102 takes 1 millisecond to move from position C to position A.
  • the backlight assembly 102 stays at position A and position C and outputs light beams. Therefore, the M locations include location A and location C.
  • the backlight assembly 201 may not stay at position B. Therefore, the M locations do not include location B.
  • the backlight assembly 102 moves between position A and position B.
  • the backlight assembly 201 stays in position A for 1 millisecond.
  • the backlight assembly 102 outputs the first light beam.
  • the backlight assembly 102 takes 2 milliseconds to move from position A to position B.
  • the backlight assembly 102 stays in position B for 1 millisecond.
  • the backlight assembly 102 outputs the second light beam.
  • the backlight assembly 102 takes 2 milliseconds to move from position B to position A.
  • M locations include location A and location B.
  • the backlight assembly 102 will pass through the position C, but the backlight assembly 102 may not stay at the position C and output no light beam at the position C. Therefore, the M positions do not include position C.
  • the distance between the user and the diffusion screen 105 will change, thereby improving the user's viewing experience.
  • the distance between the viewpoint 2 corresponding to the user's left eye and the diffusion screen 105 is T1.
  • the spot size of the imaging light obtained according to the second light beam on the imaging plane where the viewpoint 2 is located matches the size of the left eye. If the user is close to the diffusion screen 105, the light spot irradiating the left eye will become larger. If the light spot covers the user's left eye and right eye at the same time, crosstalk will occur, affecting the user's stereoscopic visual experience.
  • optical element 302 may be a variable focus device.
  • the human eye tracking module 802 can be used to obtain the distance between the viewpoint and the diffusion screen 105 .
  • the processor 801 is used to adjust the focal length of the optical element 302 according to the above distance. For example, as the user approaches diffuser screen 105, processor 801 reduces the focal length of optical element 302. As the user moves away from the diffusion screen 105, the processor 801 increases the focal length of the optical element 302.
  • the stereoscopic projection system 100 may include K backlight assemblies.
  • K is an integer greater than 1.
  • Each of the K backlight assemblies is used to output two beams to the spatial light modulator at different angles to obtain 2 ⁇ K beams.
  • the spatial light modulator is used to modulate the 2 ⁇ K beam to obtain 2 ⁇ K imaging light.
  • the spatial light modulator is used to output 2 ⁇ K channels of imaging light to the diffusion screen at different angles.
  • any backlight component reference may be made to the relevant descriptions in FIGS. 1 to 8 .
  • the following description takes K equal to 3 as an example.
  • FIG. 9 is a fourth structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application.
  • the stereoscopic projection system 100 includes a display device 101 and a diffusion screen 105 .
  • the display device 101 includes three backlight assemblies, a spatial light modulator 103 and a lens 104.
  • the three backlight assemblies include a backlight assembly 102, a backlight assembly 901 and a backlight assembly 902.
  • the backlight assembly 201 outputs the first light beam and the second light beam in time division.
  • the backlight assembly 901 and the backlight assembly 902 reference may be made to the description of the backlight assembly 102.
  • 3 backlight components are used to output 6 beams.
  • the spatial light modulator 103 is used to modulate 6 light beams to obtain 6 channels of imaging light.
  • the lens 104 is used to change the transmission direction of the six imaging lights and transmit the six imaging lights to the diffusion screen 105 .
  • the diffusion screen 105 is used to diffuse 6 beams to obtain 6 Road imaging light.
  • the 6 imaging lights are illuminated to the viewpoint 1 ⁇ 6 respectively.
  • the 6 imaging lights correspond to the viewpoint 1 ⁇ 6 one-to-one.
  • Two viewpoints in viewpoints 1 ⁇ 6 correspond to one backlight component.
  • the backlight assembly 102 corresponds to viewpoint 1 and viewpoint 2 .
  • the backlight assembly 901 corresponds to viewpoint 3 and viewpoint 4.
  • the backlight assembly 902 corresponds to viewpoint 5 and viewpoint 6.
  • one backlight assembly may not correspond to one viewing position.
  • viewpoint 2 and viewpoint 3 are combined into one viewing position.
  • Viewpoint 4 and Viewpoint 5 are combined into one viewing position.
  • the backlight assembly 102 may only output the light beam corresponding to viewpoint 2.
  • the backlight assembly 902 may only output the light beam corresponding to the viewpoint 5.
  • the backlight assembly 901 outputs two light beams corresponding to viewpoint 4 and viewpoint 5.
  • the two channels of imaging light corresponding to one backlight assembly may carry the same image information.
  • viewpoint 2 and viewpoint 3 are combined into one viewing position.
  • Viewpoint 4 and Viewpoint 5 are combined into one viewing position.
  • the backlight assembly 901 outputs two light beams corresponding to viewpoint 4 and viewpoint 5.
  • the two imaging lights formed by the two beams output by the backlight assembly 901 can carry the same image information.
  • the imaging light corresponding to the backlight assembly 102 and the imaging light corresponding to the backlight assembly 901 carry different image information.
  • the imaging light corresponding to the backlight assembly 902 and the imaging light corresponding to the backlight assembly 901 carry different image information.
  • the eyes of the user at any of the above viewing positions can still receive imaging light carrying different image information, thereby obtaining three-dimensional visual enjoyment.
  • the stereoscopic projection system 100 can move the backlight assembly through a moving mechanism.
  • the moving mechanism may be used to move the K backlight assemblies.
  • the moving mechanism can move K backlight assemblies in the same direction.
  • each of the K backlight assemblies moves in the same direction during movement. For example, in FIG. 9 , at a certain moment, the backlight assembly 102 , the backlight assembly 901 and the backlight assembly 902 move upward simultaneously. At another moment, the backlight assembly 102, the backlight assembly 901 and the backlight assembly 902 move downward simultaneously.
  • the multiple light source devices may be arranged in parallel.
  • Parallel arrangement means that the light exit surfaces of the multiple light source devices are on the same plane, and the beam output directions of the first light source device and the second light source device are the same. This plane is perpendicular to the output direction.
  • the optical element 302 is used to obtain the first light beam by transmitting the original light beam. According to the previous description, the optical element 302 can also be a mirror. Therefore, the optical element 302 can also be used to obtain the first beam by reflecting the original beam. Regarding the description of obtaining the first light beam through reflection by the optical element 302, reference may be made to the aforementioned descriptions of FIGS. 4a to 6 .
  • FIG. 10 is a schematic structural diagram of a projection system provided by an embodiment of the present application.
  • the projection system 1100 includes a stereoscopic projection system 100 and a curved mirror 1101 .
  • the stereoscopic projection system 100 is used to output two channels of imaging light.
  • the curved mirror 1101 is used to reflect two channels of imaging light, and there is an included angle between the two channels of imaging light after reflection.
  • the focal length of the curved mirror 1101 is f.
  • the distance between the diffusion screen 105 and the curved mirror 1101 is d.
  • d can be the furthest vertical distance.
  • d may be the straight-line distance between the center point of the diffusion screen 105 and the target point on the curved mirror 1101 .
  • the imaging light output from the center point irradiates the target point on the curved mirror 1101.
  • d is less than f.
  • the curved mirror 1101 can amplify the virtual image. Therefore, when the distance between the user and the projection system 1100 is close, the user can see the enlarged virtual image, thereby improving the user experience.
  • Figure 11 is a schematic circuit diagram of a stereoscopic projection system provided by an embodiment of the present application.
  • the circuit in the stereoscopic projection system mainly includes a processor 1001, internal memory 1002, external memory interface 1003, audio module 1004, video module 1005, power module 1006, wireless communication module 1007, and I/O interface 1008 , video interface 1009, processor LAN (Controller Area Network, CAN) transceiver 1010, display circuit 1028 and display panel 1029, etc.
  • the processor 1001 and its peripheral components such as internal memory 1002, CAN transceiver 1010, audio module 1004, video module 1005, power module 1006, wireless communication module 1007, I/O interface 1008, video interface 1009, touch unit 1010.
  • the display circuit 1028 can be connected through a bus.
  • Processor 1001 may be called a front-end processor.
  • circuit diagram schematically illustrated in the embodiment of the present application does not constitute a specific limitation on the stereoscopic projection system.
  • the stereoscopic projection system may include more or less components than shown in the figures, or some components may be combined, or some components may be separated, or may be arranged differently.
  • the components illustrated may be implemented in hardware, software, or a combination of software and hardware.
  • the processor 1001 includes one or more processing units.
  • the processor 1001 may include an application processor (Application Processor, AP), a modem processor, a graphics processor (Graphics Processing Unit, GPU), an image signal processing unit. (Image Signal Processor, ISP), video codec, digital signal processor (Digital Signal Processor, DSP), baseband processor, and/or neural network processor (Neural-Network Processing Unit, NPU), etc.
  • application processor Application Processor, AP
  • modem processor a graphics processor
  • GPU Graphics Processing Unit
  • ISP Image Signal Processor
  • video codec video codec
  • digital signal processor Digital Signal Processor
  • DSP Digital Signal Processor
  • baseband processor baseband processor
  • neural network processor Neural-Network Processing Unit, NPU
  • different processing units can be independent devices or integrated in one or more processors.
  • the processor 1001 may also be provided with a memory for storing instructions and data.
  • a memory for storing instructions and data.
  • the memory in processor 1001 is a cache memory. This memory can hold instructions or data that have just been used or are recycled by the processor 1001 . If the processor 1001 needs to use the instruction or data again, it can be called directly from the memory. Repeated access is avoided and the waiting time of the processor 1001 is reduced, thus improving the efficiency of the system.
  • the function of the processor 1001 can be implemented by a domain processor on the vehicle.
  • the stereoscopic projection system may also include a plurality of input/output (I/O) interfaces 1008 connected to the processor 1001.
  • the interface 1008 may include but is not limited to an integrated circuit (Inter-Integrated Circuit, I2C) interface, an integrated circuit built-in audio (Inter-Integrated Circuit Sound, I2S) interface, a pulse code modulation (Pulse Code Modulation, PCM) interface, and universal asynchronous reception and transmission.
  • I2C Inter-Integrated Circuit
  • I2S integrated circuit built-in audio
  • PCM pulse code modulation
  • UART Universal Asynchronous Receiver/Transmitter
  • MIPI Mobile Industry Processor Interface
  • GPIO General-Purpose Input/Output
  • SIM Subscriber Identity Module
  • USB Universal Serial Bus
  • the above-mentioned I/O interface 1008 can be connected to devices such as a mouse, touch screen, keyboard, camera, speaker/speaker, microphone, etc., or can be connected to physical buttons on the stereoscopic projection system (such as volume keys, brightness adjustment keys, power on/off keys, etc.).
  • Internal memory 1002 may be used to store computer executable program code, which includes instructions.
  • the internal memory 1002 may include a program storage area and a data storage area.
  • the stored program area can store the operating system, at least one application program required for the function (such as call function, time setting function, AR function, etc.).
  • the storage data area can store data created during the use of the stereoscopic projection system (such as phone book, world time, etc.).
  • the internal memory 1002 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc.
  • Processor 1001 runs by The instructions stored in the internal memory 1002 and/or the instructions stored in the memory provided in the processor 1001 execute various functional applications and data processing of the stereoscopic projection system.
  • the external memory interface 1003 can be used to connect an external memory (such as a Micro SD card).
  • the external memory can store data or program instructions as needed.
  • the processor 1001 can read and write these data or program instructions through the external memory interface 1003.
  • the audio module 1004 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals.
  • the audio module 1004 can also be used to encode and decode audio signals, such as playing or recording.
  • the audio module 1004 may be disposed in the processor 1001, or some functional modules of the audio module 1004 may be disposed in the processor 1001.
  • the stereoscopic projection system can implement audio functions through the audio module 1004 and application processor.
  • the video interface 1009 can receive external audio and video input, which can specifically be a High Definition Multimedia Interface (HDMI), a Digital Video Interface (Digital Visual Interface, DVI), or a Video Graphics Array (VGA). Display port (DP), Low Voltage Differential Signaling (LVDS) interface, etc.
  • the video interface 1009 can also output video.
  • the stereoscopic projection system receives video data sent by the navigation system through the video interface or receives video data sent by the domain processor.
  • the video module 1005 can decode the video input by the video interface 1009, for example, perform H.264 decoding.
  • the video module can also encode the video collected by the stereoscopic projection system, such as H.264 encoding of the video collected by an external camera.
  • the processor 1001 can also decode the video input from the video interface 1009, and then output the decoded image signal to the display circuit.
  • the above-mentioned stereoscopic projection system also includes a CAN transceiver 1010, and the CAN transceiver 1010 can be connected to the CAN bus (CAN BUS) of the car.
  • CAN BUS CAN bus
  • the stereoscopic projection system can communicate with the vehicle entertainment system (music, radio, video module), vehicle status system, etc.
  • the vehicle status system can send vehicle status information (doors, seat belts, etc.) to the stereoscopic projection system for display.
  • the display circuit 1028 and the display panel 1029 jointly implement the function of displaying images.
  • the display circuit 1028 receives the image signal output by the processor 1001, processes the image signal, and then inputs it into the display panel 1029 for imaging.
  • the display circuit 1028 can also control the image displayed by the display panel 1029. For example, control parameters such as display brightness or contrast.
  • the display circuit 1028 may include a driving circuit, an image control circuit, and the like. Wherein, the above-mentioned display circuit 1028 and display panel 1029 may be located in the pixel assembly 502.
  • the display panel 1029 is used to modulate the light beam input from the light source according to the input image signal, thereby generating a visible image.
  • the display panel 1029 may be a silicon-based liquid crystal panel, a liquid crystal display panel or a digital micromirror device.
  • the video interface 1009 can receive input video data (also called a video source).
  • the video module 1005 decodes and/or digitizes the data and then outputs the image signal to the display circuit 1028.
  • the display circuit 1028 responds to the input image signal.
  • the display panel 1029 is driven to image the light beam emitted by the light source, thereby generating a visible image (emitting imaging light).
  • the power module 1006 is used to provide power to the processor 1001 and the light source according to the input power (eg, direct current).
  • the power module 1006 may include a rechargeable battery, and the rechargeable battery may provide power to the processor 1001 and the light source.
  • the light emitted by the light source can be transmitted to the display panel 1029 for imaging, thereby forming an image light signal (imaging light).
  • the power supply module 1006 can be connected to a power supply module (such as a power battery) of the car, and the power supply module of the car supplies power to the power supply module 1006 of the stereoscopic projection system.
  • a power supply module such as a power battery
  • the wireless communication module 1007 can enable the stereoscopic projection system to communicate wirelessly with the outside world, and can provide a wireless local area network (Wireless Local Area Networks, WLAN) (such as Wireless Fidelity (Wi-Fi) network), Bluetooth (Bluetooth, BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM) ), near field communication technology (Near Field Communication, NFC), infrared technology (Infrared, IR) and other wireless communication solutions.
  • the wireless communication module 1007 may be one or more devices integrating at least one communication processing module.
  • the wireless communication module 1007 receives electromagnetic waves through the antenna, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 1001 .
  • the wireless communication module 1007 can also receive the signal to be sent from the processor 1001, frequency modulate it, amplify it, and convert it into electromagnetic waves through the antenna for radiation.
  • the video data decoded by the video module 1005 can also be received wirelessly through the wireless communication module 1007 or read from the internal memory 1002 or external memory.
  • the stereoscopic projection system can The wireless local area network in the system receives video data from the terminal device or the vehicle entertainment system, and the stereoscopic projection system can also read the audio and video data stored in the internal memory 1002 or the external memory.
  • An embodiment of the present application also provides a vehicle equipped with any one of the aforementioned stereoscopic projection systems.
  • the stereoscopic projection system is used to output two channels of imaging light.
  • the two imaging lights carry image information with different parallaxes.
  • the output two-way imaging light is reflected to the windshield through the reflector, and the windshield further reflects the two-way imaging light to form a virtual image.
  • the virtual image is on one side of the windshield, with the driver or passenger on the other side.
  • the reflected two-channel imaging light shines on the eyes of the driver or passenger respectively. For example, the first imaging light hits the passenger's left eye.
  • the second imaging light is illuminated to the passenger's right eye.
  • FIG. 12 is a schematic diagram of a projection system installed on a vehicle according to an embodiment of the present application.
  • Vehicle windshields can serve as curved mirrors in projection systems.
  • the stereoscopic projection system 100 in the projection system is located on the same side of the windshield.
  • the stereoscopic projection system 100 is used to output two channels of imaging light.
  • the two imaging lights carry image information with different parallaxes.
  • the windshield is used to reflect two paths of imaging light to form a virtual image.
  • the virtual image is on one side of the windshield, with the driver or passenger on the other side.
  • the reflected two-channel imaging light shines on the eyes of the driver or passenger respectively. For example, the first imaging light hits the passenger's left eye.
  • the second imaging light is illuminated to the passenger's right eye.
  • vehicles may be cars, trucks, motorcycles, buses, boats, airplanes, helicopters, lawn mowers, recreational vehicles, playground vehicles, construction equipment, trolleys, golf carts, trains, and handcarts etc.
  • the stereoscopic projection system can be installed on the instrument panel (IP) of the vehicle, in the passenger or main driver position, or on the back of the seat.
  • IP instrument panel
  • HUD head-up display
  • Figure 13 is a schematic diagram of a possible functional framework of the vehicle provided by the embodiment of this application.
  • the functional framework of the vehicle may include various subsystems, such as the control system 14 in the figure, the sensor system 12, one or more peripheral devices 16 (one is shown as an example in the figure), a power supply 18.
  • Computer system 20, display system 32 the vehicle may also include other functional systems, such as an engine system that provides power for the vehicle, etc., which is not limited in this application.
  • the sensor system 12 may include several detection devices, which can sense the measured information and convert the sensed information into electrical signals or other required forms of information output according to certain rules.
  • these detection devices may include a global positioning system (GPS), a vehicle speed sensor, an inertial measurement unit (IMU), a radar unit, a laser rangefinder, a camera device, and a wheel speed sensor. sensor, steering sensor, gear sensor, or other components for automatic detection, etc., this application is not limited.
  • the control system 14 may include several elements, such as the illustrated steering unit, braking unit, lighting system, automatic driving system, map navigation system, network time synchronization system and obstacle avoidance system.
  • the control system 14 may also include components such as a throttle processor and an engine processor for controlling the driving speed of the vehicle, which are not limited in this application.
  • Peripheral device 16 may include several elements, such as a communication system, a touch screen, a user interface, a microphone and a speaker as shown, among others.
  • the communication system is used to realize network communication between vehicles and other devices other than vehicles.
  • the communication system can use wireless communication technology or wired communication technology to realize network communication between vehicles and other devices.
  • the wired communication technology may refer to communication between vehicles and other devices through network cables or optical fibers.
  • the power source 18 represents a system that provides power or energy to the vehicle, which may include, but is not limited to, rechargeable lithium batteries or lead-acid batteries, etc. In practical applications, one or more battery components in the power supply are used to provide electric energy or energy for starting the vehicle. The type and material of the power supply are not limited in this application.
  • the computer system 20 may include one or more processors 2001 (one processor is shown as an example) and a memory 2002 (which may also be referred to as a storage device).
  • the memory 2002 may also be inside the computer system 20 or outside the computer system 20 , for example, as a cache in a vehicle, etc., which is not limited by this application. in,
  • Processor 2001 may include one or more general-purpose processors, such as a graphics processing unit (GPU).
  • the processor 2001 may be used to run relevant programs or instructions corresponding to the programs stored in the memory 2002 to implement corresponding functions of the vehicle.
  • Memory 2002 may include volatile memory (volatile memory), such as RAM; memory may also include non-volatile memory (non-volatile memory), such as ROM, flash memory (flash memory) or solid state drive (solid state). drives, SSD); the memory 2002 may also include a combination of the above types of memory.
  • the memory 2002 can be used to store a set of program codes or instructions corresponding to the program codes, so that the processor 2001 can call the program codes or instructions stored in the memory 2002 to implement corresponding functions of the vehicle. This function includes but is not limited to some or all of the functions in the vehicle function framework diagram shown in Figure 13. In this application, a set of program codes for vehicle control can be stored in the memory 2002, and the processor 2001 calls the program codes to control the safe driving of the vehicle. How to achieve safe driving of the vehicle will be described in detail below in this application.
  • the memory 2002 may also store information such as road maps, driving routes, sensor data, and the like.
  • the computer system 20 can be combined with other elements in the vehicle functional framework diagram, such as sensors in the sensor system, GPS, etc., to implement vehicle-related functions.
  • the computer system 20 can control the driving direction or driving speed of the vehicle based on data input from the sensor system 12, which is not limited in this application.
  • Display system 32 may include several elements, such as a processor, a curved mirror, and the stereoscopic projection system 100 described above.
  • the processor is used to generate an image according to user instructions (for example, generate an image including vehicle status such as vehicle speed, power/fuel level, and an image of augmented reality AR content), and send the image content to the stereoscopic projection system 100 .
  • the stereoscopic projection system 100 is used to output two channels of imaging light carrying different image information.
  • the windshield is a curved mirror.
  • the windshield is used to reflect or transmit two-way imaging light, so that a virtual image corresponding to the image content is presented in front of the driver or passenger.
  • the functions of some components in the display system 32 can also be implemented by other subsystems of the vehicle.
  • the processor can also be a component in the control system 14 .
  • Figure 13 of this application includes four subsystems.
  • the sensor system 12, the control system 14, the computer system 20 and the display system 32 are only examples and do not constitute a limitation.
  • vehicles can combine several components in the vehicle according to different functions to obtain subsystems with corresponding different functions.
  • the vehicle may include more or fewer systems or components, which is not limited by this application.

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Abstract

A 3D projection system, comprising a backlight component (102), a spatial light modulator (103), and a diffusing screen (105). The backlight component (102) is used for outputting two light beams to the spatial light modulator (103) at different angles. The spatial light modulator (103) is used for modulating the two light beams according to different image information to obtain two paths of imaging light, and outputting the two paths of imaging light to the diffusing screen (105) at different angles. The diffusing screen (105) is used for diffusing the two paths of imaging light and outputting two paths of diffused imaging light at different angles.

Description

立体投影***、投影***和交通工具Stereoscopic projection systems, projection systems and vehicles
本申请要求于2022年7月27日中国国家知识产权局、申请号为202210892822.X、申请名称为“立体投影***、投影***和交通工具”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on July 27, 2022, with application number 202210892822. incorporated in this application.
技术领域Technical field
本申请涉及显示领域，尤其涉及一种立体投影***和包含有该立体投影***的交通工具。The present application relates to the field of display, and in particular, to a stereoscopic projection system and a vehicle including the stereoscopic projection system.
背景技术Background technique
立体显示需要给双眼提供携带不同视差的图像信息。相比于2D显示，立体显示可以给人更好的体验。Stereoscopic display requires providing image information with different parallaxes to both eyes. Compared with 2D display, stereoscopic display can give people a better experience.
裸眼立体显示技术也是一种立体显示方案，该方案中用户不需要佩戴偏光眼镜或快门眼镜。立体投影***输出两路成像光分别到用户的左右眼。具体地，立体投影***包括2个投影仪和扩散屏。2个投影仪用于以不同的输出方向向扩散屏输出两路成像光。扩散屏用于对两路成像光进行扩散，以不同的角度输出两路成像光。扩散屏输出的两路成像光分别照射到用户的左右眼。两路成像光携带不同的图像信息。从而给用户提供立体的视觉享受。Naked-eye stereoscopic display technology is also a stereoscopic display solution in which users do not need to wear polarized glasses or shutter glasses. The stereoscopic projection system outputs two channels of imaging light to the user's left and right eyes respectively. Specifically, the stereoscopic projection system includes 2 projectors and a diffusion screen. The two projectors are used to output two channels of imaging light to the diffusion screen in different output directions. The diffusion screen is used to diffuse two channels of imaging light and output the two channels of imaging light at different angles. The two-channel imaging light output by the diffusion screen irradiates the user's left and right eyes respectively. The two imaging lights carry different image information. Thus providing users with three-dimensional visual enjoyment.
在实际应用中，立体投影***的成本较高。In practical applications, the cost of stereoscopic projection systems is relatively high.
发明内容Contents of the invention
本申请提供了一种立体投影***、投影***和交通工具，通过共用同一个空间光调制器，可以降低立体投影***的成本。This application provides a stereoscopic projection system, a projection system and a vehicle. By sharing the same spatial light modulator, the cost of the stereoscopic projection system can be reduced.
本申请第一方面提供了一种立体投影***。立体投影***包括背光组件、空间光调制器和扩散屏。背光组件用于以不同的角度向空间光调制器输出两束光束。空间光调制器用于根据不同的图像信息调制两束光束，得到两路成像光。空间光调制器用于以不同的角度向扩散屏输出两路成像光。扩散屏用于对两路成像光进行扩散，以不同的角度输出扩散后的两路成像光。A first aspect of this application provides a stereoscopic projection system. Stereoscopic projection systems include backlight components, spatial light modulators and diffusion screens. The backlight assembly is used to output two beams of light at different angles to the spatial light modulator. The spatial light modulator is used to modulate two beams according to different image information to obtain two channels of imaging light. The spatial light modulator is used to output two channels of imaging light to the diffusion screen at different angles. The diffusion screen is used to diffuse two channels of imaging light and output the diffused two channels of imaging light at different angles.
在第一方面的一种可选方式中，背光组件包括第一光源器件和第二光源器件。两束光束包括第一光束和第二光束。第一光源器件和第二光源器件用于分时的输出第一光束和第二光束。第一光源器件和第一光束对应。第二光源器件和第二光束对应。在本申请中，通过不同的光源器件生成不同的光束，可以降低背光组件的结构的复杂性，从而降低生产成本。In an optional manner of the first aspect, the backlight assembly includes a first light source device and a second light source device. The two beams include a first beam and a second beam. The first light source device and the second light source device are used to time-share the output of the first light beam and the second light beam. The first light source device corresponds to the first light beam. The second light source device corresponds to the second light beam. In this application, by generating different light beams through different light source devices, the structural complexity of the backlight assembly can be reduced, thereby reducing production costs.
在第一方面的一种可选方式中，两束光束包括第一光束和第二光束。背光组件用于在第一位置输出第一光束，在第二位置输出第二光束。在本申请中，通过移动背光组件，可以降低光源器件的数量，从而降低立体投影***的成本。In an optional manner of the first aspect, the two light beams include a first light beam and a second light beam. The backlight assembly is configured to output a first light beam at a first position and a second light beam at a second position. In this application, by moving the backlight assembly, the number of light source devices can be reduced, thereby reducing the cost of the stereoscopic projection system.
在第一方面的一种可选方式中，背光组件包括光源器件和光学元件。光源器件相对空间光调制器的位置不变。光源器件用于输出原始光束。光学元件用于在第一位置根据原始光束得到第一光束。光学元件用于在第二位置改变原始光束的传输方向，得到第二光束。在本申请中，通过移动机构移动光学元件。通过移动光学元件，固定光源器件，可以降低移动机构的复杂性，从而降低移动机构的成本。 In an optional manner of the first aspect, the backlight assembly includes a light source device and an optical element. The position of the light source device relative to the spatial light modulator remains unchanged. The light source device is used to output the original light beam. The optical element is used to obtain the first light beam based on the original light beam at the first position. The optical element is used to change the transmission direction of the original light beam at the second position to obtain the second light beam. In this application, the optical element is moved by a moving mechanism. By moving the optical elements and fixing the light source device, the complexity of the moving mechanism can be reduced, thereby reducing the cost of the moving mechanism.
在第一方面的一种可选方式中，光学元件输出的第一光束和第二光束存在重叠区域。空间光调制器位于重叠区域。当空间光调制器位于重叠区域时，立体投影***可以不需要移动空间光调制器，从而降低立体投影***的成本。In an optional manner of the first aspect, there is an overlapping area between the first light beam and the second light beam output by the optical element. The spatial light modulator is located in the overlapping area. When the spatial light modulator is located in the overlapping area, the stereoscopic projection system does not need to move the spatial light modulator, thereby reducing the cost of the stereoscopic projection system.
在第一方面的一种可选方式中，背光组件包括光源器件和光学元件。光源器件用于在第三位置输出第一原始光束。光学元件用于在第一位置根据第一原始光束得到第一光束。光源器件用于在第四位置输出第二原始光束。光学元件用于在第二位置改变第二原始光束的传输方向，得到第二光束。其中，第三位置和第一位置的偏移量与第四位置和第二位置的偏移量不同。通过移动光学元件和光源器件，可以使得第一光束和第二光束照射区域尽量重叠。当空间光调制器位于重叠区域时，可以减少光束的浪费。因此，本申请可以提高光束的利用率。In an optional manner of the first aspect, the backlight assembly includes a light source device and an optical element. The light source device is used to output the first original light beam at a third position. The optical element is used to obtain the first light beam according to the first original light beam at the first position. The light source device is configured to output the second original light beam at a fourth position. The optical element is used to change the transmission direction of the second original light beam at the second position to obtain the second light beam. Wherein, the offset amount between the third position and the first position is different from the offset amount between the fourth position and the second position. By moving the optical element and the light source device, the irradiation areas of the first beam and the second beam can be overlapped as much as possible. When spatial light modulators are located in overlapping regions, light beam waste can be reduced. Therefore, this application can improve the utilization rate of light beams.
在第一方面的一种可选方式中，第三位置和第四位置位于第一平面。光源器件用于从第三位置经过第一路径移动至第四位置。第一路径平行于第一直线。第一直线位于第一平面上。相比于曲线移动光源器件，通过直线移动光源器件可以降低移动机构的复杂性，并降低对移动空间的需求。因此，本申请可以降低立体投影***的成本并提高用户体验。In an alternative to the first aspect, the third position and the fourth position are located on the first plane. The light source device is used to move from the third position to the fourth position through the first path. The first path is parallel to the first straight line. The first straight line lies on the first plane. Compared with moving the light source device in a curve, moving the light source device in a straight line can reduce the complexity of the moving mechanism and reduce the demand for moving space. Therefore, this application can reduce the cost of the stereoscopic projection system and improve user experience.
在第一方面的一种可选方式中，第一位置和第二位置位于第二平面。光学元件用于从第一位置经过第二路径移动至第二位置。第二路径平行于第二直线。第二直线位于第二平面上。相比于曲线移动光学元件，通过直线移动光学元件可以降低移动机构的复杂性，并降低对移动空间的需求。因此，本申请可以降低立体投影***的成本并提高用户体验。In an optional manner of the first aspect, the first position and the second position are located on the second plane. The optical element is configured to move from a first position to a second position via a second path. The second path is parallel to the second straight line. The second straight line is located on the second plane. Compared with moving optical elements in a curve, moving optical elements in a straight line can reduce the complexity of the moving mechanism and reduce the need for moving space. Therefore, this application can reduce the cost of the stereoscopic projection system and improve user experience.
在第一方面的一种可选方式中，第一平面和第二平面平行。第一路径和第二路径平行。第二路径的长度小于第一路径的长度。当第二路径的长度小于第一路径的长度时，可以使得两束光束的照射区域尽量重叠。当空间光调制器位于重叠区域时，从而减少光束的浪费。因此，本申请可以提高光束的利用率。In an alternative to the first aspect, the first plane and the second plane are parallel. The first path and the second path are parallel. The length of the second path is less than the length of the first path. When the length of the second path is smaller than the length of the first path, the irradiation areas of the two beams can be made to overlap as much as possible. When spatial light modulators are located in overlapping areas, light beam waste is reduced. Therefore, this application can improve the utilization rate of light beams.
在第一方面的一种可选方式中，光学元件还用于在第二位置改变第二原始光束的发散角，得到第二光束。In an optional manner of the first aspect, the optical element is also used to change the divergence angle of the second original light beam at the second position to obtain the second light beam.
在第一方面的一种可选方式中，光学元件用于增大第二原始光束的扩散角，得到第二光束。通过增大原始光束的扩散角，可以减小光源器件和空间光调制器之间的距离。因此，本申请可以降低立体投影***的尺寸，从而提高用户体验。In an optional manner of the first aspect, the optical element is used to increase the divergence angle of the second original light beam to obtain the second light beam. By increasing the divergence angle of the original beam, the distance between the light source device and the spatial light modulator can be reduced. Therefore, this application can reduce the size of the stereoscopic projection system, thereby improving user experience.
在第一方面的一种可选方式中，光学元件为可变焦器件。当光学元件为可变焦器件时，光学元件可以根据用户与扩散屏之间的距离调整焦距，从而提升用户体验。In an optional manner of the first aspect, the optical element is a variable focus device. When the optical element is a variable focus device, the optical element can adjust the focal length according to the distance between the user and the diffusion screen, thereby improving the user experience.
在第一方面的一种可选方式中，背光组件用于在M个位置之间移动，以不同的角度输出M束光束。M束光束包括两束光束。M个位置包括第一位置和第二位置。M个位置和M束光束一一对应。M为大于1的整数。通过在M个位置之间移动，可以在提供更多观看位置的情况下减少背光组件的数量。因此，本申请可以降低立体投影***的成本。In an optional manner of the first aspect, the backlight assembly is used to move between M positions to output M beams of light at different angles. M beams include two beams. The M positions include the first position and the second position. M positions correspond to M beams one-to-one. M is an integer greater than 1. By moving between M positions, the number of backlight components can be reduced while providing more viewing positions. Therefore, the present application can reduce the cost of the stereoscopic projection system.
在第一方面的一种可选方式中，立体投影***还包括人眼追踪模块。人眼追踪模块用于获取M个视点。M个视点和M个位置一一对应。背光组件用于根据M个视点在N个位置中的M个位置之间移动。N个位置对应N个视点。N个视点中可能只有M个视点有用户观看。通过只在M个位置之间移动，可以提高单个用户的图像帧率。因此，本申请可以提高用户体验。In an optional manner of the first aspect, the stereoscopic projection system further includes a human eye tracking module. The human eye tracking module is used to obtain M viewpoints. There is a one-to-one correspondence between M viewpoints and M positions. The backlight assembly is used to move between M positions out of N positions according to M viewpoints. N positions correspond to N viewpoints. Only M viewpoints among N viewpoints may be viewed by users. By moving only between M locations, the image frame rate for a single user can be improved. Therefore, this application can improve user experience.
在第一方面的一种可选方式中，N的取值范围在2至10之间。当N值过大时，会降低单个用户的图像帧率。因此，本申请可以通过限制N的取值来提高单个用户的图像帧率，从而提高用户体验。In an optional manner of the first aspect, the value of N ranges from 2 to 10. When the N value is too large, the image frame rate of a single user will be reduced. Therefore, this application can improve the image frame rate of a single user by limiting the value of N, thereby improving user experience.
在第一方面的一种可选方式中，立体投影***包括K个背光组件和空间光调制器。K为大于1的整数。K个背光组件中的每个背光组件用于以不同的角度向空间光调制器输出两束 光束，得到2×K束光束。空间光调制器用于调制2×K束光束，得到2×K路成像光。空间光调制器用于以不同的角度向扩散屏输出2×K路成像光。2×K束光束包括两束光束。2×K路成像光包括两束成像光。在本申请中，通过引入K个背光组件，可以提供更多的观看位置。因此，本申请可以提高用户体验。In an optional manner of the first aspect, the stereoscopic projection system includes K backlight assemblies and a spatial light modulator. K is an integer greater than 1. Each of the K backlight assemblies is used to output two beams at different angles to the spatial light modulator. beam, obtaining 2×K beams. The spatial light modulator is used to modulate the 2×K beam to obtain 2×K imaging light. The spatial light modulator is used to output 2×K channels of imaging light to the diffusion screen at different angles. The 2×K beam includes two beams. The 2×K imaging light includes two beams of imaging light. In this application, by introducing K backlight components, more viewing positions can be provided. Therefore, this application can improve user experience.
在第一方面的一种可选方式中，K个背光组件中的每个背光组件在移动过程中的移动方向相同。每个背光组件的移动方向相同时，可以降低移动机构的复杂性，从而降低立体投影***的成本。In an optional manner of the first aspect, each of the K backlight assemblies moves in the same direction during movement. When each backlight assembly moves in the same direction, the complexity of the moving mechanism can be reduced, thereby reducing the cost of the stereoscopic projection system.
在第一方面的一种可选方式中，在背光组件从第一位置移动到第二位置，或从第二位置移动到第一位置的过程中，背光组件不输出光束。移动过程中输出的光束可能会产生串扰，从而影响用户体验。因此，本申请可以提高用户体验。In an optional manner of the first aspect, during the movement of the backlight assembly from the first position to the second position, or from the second position to the first position, the backlight assembly does not output the light beam. The output beam during movement may produce crosstalk, thus affecting the user experience. Therefore, this application can improve user experience.
本申请第二方面提供了一种投影***。投影***包括曲面镜和前述第一方面或第一方面任意一种可选方式中所述的立体投影***。立体投影***用于输出两路成像光。曲面镜用于反射扩散后的两路成像光，反射后的两路成像光之间存在夹角。曲面镜的焦距为f。扩散屏与曲面镜的距离为d。d小于f。通过曲面镜可以放大两路成像光，从而可以降低用户与扩散屏之间距离。因此，本申请可以提高用户体验。A second aspect of this application provides a projection system. The projection system includes a curved mirror and the stereoscopic projection system described in the first aspect or any of the optional modes of the first aspect. The stereoscopic projection system is used to output two channels of imaging light. The curved mirror is used to reflect the diffused two-way imaging light, and there is an included angle between the two-way imaging light after reflection. The focal length of the curved mirror is f. The distance between the diffusion screen and the curved mirror is d. d is less than f. The curved mirror can amplify the two imaging lights, thereby reducing the distance between the user and the diffusion screen. Therefore, this application can improve user experience.
本申请第三方面提供了一种交通工具。交通工具包括如前述第一方面或第一方面任意一种可选方式中所述的立体投影***，或前述第二方面所述的投影***。立体投影***或投影***安装在交通工具上。The third aspect of this application provides a vehicle. The vehicle includes a stereoscopic projection system as described in the foregoing first aspect or any alternative to the first aspect, or a projection system as described in the foregoing second aspect. Stereoscopic projection systems or projection systems are installed on vehicles.
附图说明Description of drawings
图1为本申请实施例提供的立体投影***的第一个结构示意图；Figure 1 is a first structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application;
图2为本申请实施例提供的显示设备的第一个结构示意图；Figure 2 is a first structural schematic diagram of a display device provided by an embodiment of the present application;
图3为本申请实施例提供的显示设备的第二个结构示意图；Figure 3 is a second structural schematic diagram of a display device provided by an embodiment of the present application;
图4a为本申请实施例提供的显示设备的第三个结构示意图；Figure 4a is a third structural schematic diagram of a display device provided by an embodiment of the present application;
图4b为本申请实施例提供的显示设备的第四个结构示意图；Figure 4b is a fourth structural schematic diagram of a display device provided by an embodiment of the present application;
图4c为本申请实施例提供的显示设备的第五个结构示意图；Figure 4c is a fifth structural schematic diagram of a display device provided by an embodiment of the present application;
图5为本申请实施例提供的显示设备的第六个结构示意图；Figure 5 is a sixth structural schematic diagram of a display device provided by an embodiment of the present application;
图6为本申请实施例提供的背光组件的结构示意图；Figure 6 is a schematic structural diagram of a backlight assembly provided by an embodiment of the present application;
图7为本申请实施例提供的立体投影***的第二个结构示意图；Figure 7 is a second structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application;
图8为本申请实施例提供的立体投影***的第三个结构示意图；Figure 8 is a third structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application;
图9为本申请实施例提供的立体投影***的第四个结构示意图；Figure 9 is a fourth structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application;
图10为本申请实施例提供的投影***的结构示意图；Figure 10 is a schematic structural diagram of a projection system provided by an embodiment of the present application;
图11为本申请实施例提供的一种立体投影***的电路示意图；Figure 11 is a circuit schematic diagram of a stereoscopic projection system provided by an embodiment of the present application;
图12为本申请实施例提供投影***安装在交通工具的示意图；Figure 12 is a schematic diagram of a projection system installed on a vehicle according to an embodiment of the present application;
图13为本申请实施例提供的交通工具的一种可能的功能框架示意图。Figure 13 is a schematic diagram of a possible functional framework of the vehicle provided by the embodiment of the present application.
具体实施方式Detailed ways
本申请提供了一种立体投影***、投影***和交通工具，通过共用同一个空间光调制器，可以降低立体投影***的成本。应理解，本申请中使用的“第一”、“第二”等仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。另外，为了简明和清楚，本申请实施例多个附图中重复参考编号和/或字母。重复并不表明各种实施例 和/或配置之间存在严格的限定关系。This application provides a stereoscopic projection system, a projection system and a vehicle. By sharing the same spatial light modulator, the cost of the stereoscopic projection system can be reduced. It should be understood that the terms "first", "second", etc. used in this application are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order. In addition, for the sake of simplicity and clarity, reference numbers and/or letters are repeated in multiple drawings of the embodiments of this application. Repetition does not indicate various embodiments There is a strictly qualified relationship between and/or configurations.
本申请中的立体投影***也可以称为3D投影***。本申请中的立体投影***应用于显示领域。在显示领域中，可以通过立体投影***给用户提供立体的视觉享受。但是，立体投影***包括2个投影仪，每个投影仪包括1个空间光调制器，导致立体投影***的成本较高。The stereoscopic projection system in this application may also be called a 3D projection system. The stereoscopic projection system in this application is used in the display field. In the field of display, stereoscopic projection systems can be used to provide users with three-dimensional visual enjoyment. However, the stereoscopic projection system includes 2 projectors, and each projector includes 1 spatial light modulator, resulting in a higher cost of the stereoscopic projection system.
为此，本申请提供了一种立体投影***。图1为本申请实施例提供的立体投影***的第一个结构示意图。如图1所示，立体投影***100包括显示设备101和扩散屏105。显示设备101包括背光组件102、空间光调制器103和镜头104。背光组件102用于分时的以不同的角度向空间光调制器103输出两束光束。空间光调制器103可以是液晶显示器(liquid crystal display，LCD)、硅基液晶(liquid crystal on silicon，LCOS)或数字微镜器件(digital micro-mirror device，DMD)等。空间光调制器103用于根据不同的图像信息分时的调制两束光束，得到两路成像光。例如，在第一时刻，空间光调制器103用于根据第一图像信息调制第一光束，得到第一路成像光。在第二时刻，空间光调制器103用于根据第二图像信息调制第二光束，得到第二路成像光。在图1中，带箭头的实线表示第一光束和第一路成像光，带箭头的虚线表示第二光束和第二路成像光。To this end, this application provides a stereoscopic projection system. Figure 1 is a first structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application. As shown in FIG. 1 , the stereoscopic projection system 100 includes a display device 101 and a diffusion screen 105 . Display device 101 includes a backlight assembly 102, a spatial light modulator 103, and a lens 104. The backlight assembly 102 is used to output two beams of light to the spatial light modulator 103 at different angles in a time-sharing manner. The spatial light modulator 103 can be a liquid crystal display (LCD), liquid crystal on silicon (LCOS) or digital micro-mirror device (DMD), etc. The spatial light modulator 103 is used to modulate two light beams in a time-sharing manner according to different image information to obtain two paths of imaging light. For example, at the first moment, the spatial light modulator 103 is used to modulate the first light beam according to the first image information to obtain the first path of imaging light. At the second moment, the spatial light modulator 103 is used to modulate the second light beam according to the second image information to obtain a second path of imaging light. In Figure 1, the solid line with arrows represents the first light beam and the first imaging light, and the dotted line with arrows represents the second light beam and the second imaging light.
空间光调制器103用于以不同的角度向镜头104输出两路成像光。镜头104用于改变两路成像光的传输方向，向扩散屏105传输两路传输光。扩散屏105用于对两路成像光进行扩散，以不同的角度输出扩散后的两路成像光。扩散后的两路成像光照射至不同的视点，例如用户的左右眼。两路成像光携带不同的图像信息。当两路成像光分别照射至用户的左右眼时，可以给用户提供立体的视觉享受。The spatial light modulator 103 is used to output two channels of imaging light to the lens 104 at different angles. The lens 104 is used to change the transmission direction of the two imaging lights and transmit the two transmission lights to the diffusion screen 105 . The diffusion screen 105 is used to diffuse two channels of imaging light, and output the diffused two channels of imaging light at different angles. The diffused two-channel imaging light illuminates different viewpoints, such as the user's left and right eyes. The two imaging lights carry different image information. When two channels of imaging light are illuminated to the user's left and right eyes respectively, it can provide the user with three-dimensional visual enjoyment.
在本申请实施例中，通过共用同一个空间光调制器103，空间光调制器103可以分时的输出两路成像光，从而给用户提供立体的视觉享受。因此，本申请实施例可以减少立体投影***中空间光调制器103的数量，从而降低立体投影***的成本。In the embodiment of the present application, by sharing the same spatial light modulator 103, the spatial light modulator 103 can output two channels of imaging light in a time-sharing manner, thereby providing the user with three-dimensional visual enjoyment. Therefore, embodiments of the present application can reduce the number of spatial light modulators 103 in the stereoscopic projection system, thereby reducing the cost of the stereoscopic projection system.
根据前述图1的描述可知，背光组件102可以输出两个光束。两个光束的传输方向不同。下面对背光组件102可能的结构进行示例性的描述。According to the foregoing description of FIG. 1 , the backlight assembly 102 can output two light beams. The two beams travel in different directions. An exemplary description of possible structures of the backlight assembly 102 is provided below.
在一种示例中，背光组件102包括多个光源器件。多个光源器件分时的输出两束光束。图2为本申请实施例提供的显示设备的第一个结构示意图。如图2所示，显示设备101包括背光组件102和空间光调制器103。背光组件102包括第一光源器件201和第二光源器件202。第一光源器件201和第二光源器件202可以是发光二极管(light emitting diode，LED)光源或激光二极管(laser diode，LD)光源等。第一光源器件201和第二光源器件202用于分时的输出两束光束。例如，在第一时刻，第一光源器件201用于向空间光调制器103输出第一光束。在第二时刻，第二光源器件202用于向空间光调制器103输出第二光束。空间光调制器103用于根据不同的图像信息分时的调制两束光束，得到两路成像光。In one example, the backlight assembly 102 includes a plurality of light source devices. Multiple light source devices output two beams in a time-shared manner. FIG. 2 is a first structural schematic diagram of a display device provided by an embodiment of the present application. As shown in FIG. 2 , the display device 101 includes a backlight assembly 102 and a spatial light modulator 103 . The backlight assembly 102 includes a first light source device 201 and a second light source device 202 . The first light source device 201 and the second light source device 202 may be a light emitting diode (LED) light source or a laser diode (LD) light source. The first light source device 201 and the second light source device 202 are used to output two beams of light in a time-sharing manner. For example, at the first moment, the first light source device 201 is used to output the first light beam to the spatial light modulator 103 . At the second moment, the second light source device 202 is used to output the second light beam to the spatial light modulator 103 . The spatial light modulator 103 is used to modulate two light beams in a time-sharing manner according to different image information to obtain two paths of imaging light.
在另一种示例中，通过移动背光组件102，使得背光组件102在不同的位置分别输出两束光束。图3为本申请实施例提供的显示设备的第二个结构示意图。如图3所示，显示设备101包括背光组件102和空间光调制器103。背光组件102在位置A和位置B之间移动。在第一时刻，背光组件102用于在位置A向空间光调制器103输出第一光束。在第二时刻，背光组件102用于在位置B向空间光调制器103输出第二光束。空间光调制器103用于根据不同的图像信息分时的调制两束光束，得到两路成像光。In another example, by moving the backlight assembly 102, the backlight assembly 102 outputs two beams of light at different positions. FIG. 3 is a second structural schematic diagram of a display device provided by an embodiment of the present application. As shown in FIG. 3 , the display device 101 includes a backlight assembly 102 and a spatial light modulator 103 . The backlight assembly 102 moves between position A and position B. At the first moment, the backlight assembly 102 is configured to output the first light beam to the spatial light modulator 103 at position A. At the second moment, the backlight assembly 102 is configured to output the second light beam to the spatial light modulator 103 at position B. The spatial light modulator 103 is used to modulate two light beams in a time-sharing manner according to different image information to obtain two paths of imaging light.
在前述的示例中，可以通过移动背光组件102来分时的输出两束光束。应理解，移动背光组件102可以是移动背光组件102中的部分器件。例如，背光组件102包括光源器件和光学元件。背光组件102可以通过移动光学元件来分时的输出两束光束。下面对此进行描述。 In the foregoing example, the backlight assembly 102 can be moved to output two beams in a time-divided manner. It should be understood that the moving backlight assembly 102 may be part of the components in the moving backlight assembly 102 . For example, the backlight assembly 102 includes a light source device and optical elements. The backlight assembly 102 can output two beams of light in a time-divided manner by moving the optical elements. This is described below.
图4a为本申请实施例提供的显示设备的第三个结构示意图。如图4a所示，显示设备101包括背光组件102和空间光调制器103。背光组件102包括光源器件301和光学元件302。光源器件301用于向光学元件302输出原始光束。光学元件302可以为透镜、反射镜、棱镜或菲涅尔镜等。光学元件302用于在第一位置根据原始光束得到第一光束。第一光束照射至接收面303。空间光调制器103设置于接收面303。Figure 4a is a third structural schematic diagram of a display device provided by an embodiment of the present application. As shown in Figure 4a, the display device 101 includes a backlight assembly 102 and a spatial light modulator 103. The backlight assembly 102 includes a light source device 301 and an optical element 302. The light source device 301 is used to output the original light beam to the optical element 302. The optical element 302 may be a lens, a mirror, a prism or a Fresnel mirror, etc. The optical element 302 is used to obtain the first light beam according to the original light beam at the first position. The first light beam irradiates the receiving surface 303 . The spatial light modulator 103 is provided on the receiving surface 303 .
在图4a中，光源器件301的主光线和X轴重合。光学元件302的光轴和X轴重合。因此，光源器件301的主光线和光学元件302的光轴重合。当接收面303与X轴垂直时，主光线与接收面303的夹角α为90°。本申请中的显示设备101利用光源器件301的主光线与光学元件302光轴位置的偏心(光源器件301的主光线与光学元件302的光轴上下产生偏移)，改变原始光束的主光线的角度，从而使得光学元件302输出不同传输方向的第二光束。In Figure 4a, the chief ray of the light source device 301 coincides with the X-axis. The optical axis of optical element 302 coincides with the X-axis. Therefore, the chief ray of the light source device 301 and the optical axis of the optical element 302 coincide with each other. When the receiving surface 303 is perpendicular to the X-axis, the angle α between the chief ray and the receiving surface 303 is 90°. The display device 101 in this application uses the eccentricity between the chief ray of the light source device 301 and the optical axis position of the optical element 302 (the chief ray of the light source device 301 and the optical axis of the optical element 302 are offset up and down) to change the principal ray of the original light beam. angle, so that the optical element 302 outputs the second light beam in different transmission directions.
图4b为本申请实施例提供的显示设备的第四个结构示意图。如图4b所示，在图4a的基础上，向上平移光学元件302。此时，在图4b中，光源器件301的主光线和X轴重合。光学元件302的光轴304和X轴平行。光学元件302的光轴304相对于光源器件301的主光线产生向上的偏移。因此，光学元件302会改变原始光束的主光线的角度(即改变原始光束的传输方向)，得到第二光束。在图4b中，第二光束的主光线的角度向上偏移。向上偏移的角度会导致光束在接收面303上的照射范围向上移动。第二光束的主光线和接收面303的夹角β大于90°。Figure 4b is a fourth structural schematic diagram of a display device provided by an embodiment of the present application. As shown in Figure 4b, based on Figure 4a, the optical element 302 is translated upward. At this time, in Figure 4b, the chief ray of the light source device 301 coincides with the X-axis. The optical axis 304 of the optical element 302 is parallel to the X-axis. The optical axis 304 of the optical element 302 is offset upward relative to the chief ray of the light source device 301 . Therefore, the optical element 302 changes the angle of the chief ray of the original light beam (that is, changes the transmission direction of the original light beam) to obtain the second light beam. In Figure 4b, the angle of the chief ray of the second beam is shifted upward. An upward shift angle will cause the illumination range of the light beam on the receiving surface 303 to move upward. The angle β between the chief ray of the second light beam and the receiving surface 303 is greater than 90°.
图4c为本申请实施例提供的显示设备的第五个结构示意图。如图4c所示，在图4a的基础上，向下平移光学元件302。此时，在图4c中，光源器件301的主光线和X轴重合。光学元件302的光轴304和X轴平行。光学元件302的光轴304相对于光源器件301的主光线产生向下的偏移。因此，光学元件302会改变原始光束的主光线的角度(即改变原始光束的传输方向)，得到第二光束。在图4c中，第二光束的主光线的角度向下偏移。向下偏移的角度会导致光束在接收面303上的照射范围向下移动。第二光束的主光线和接收面303的夹角β小于90°。Figure 4c is a fifth structural schematic diagram of a display device provided by an embodiment of the present application. As shown in Figure 4c, based on Figure 4a, the optical element 302 is translated downward. At this time, in Figure 4c, the chief ray of the light source device 301 coincides with the X-axis. The optical axis 304 of the optical element 302 is parallel to the X-axis. The optical axis 304 of the optical element 302 is shifted downward relative to the chief ray of the light source device 301 . Therefore, the optical element 302 changes the angle of the chief ray of the original light beam (that is, changes the transmission direction of the original light beam) to obtain the second light beam. In Figure 4c, the angle of the chief ray of the second beam is shifted downwards. The downward deflection angle causes the illumination range of the light beam on the receiving surface 303 to move downward. The angle β between the chief ray of the second light beam and the receiving surface 303 is less than 90°.
将图4a中光学元件302所在的位置称为第一位置，将图4b或图4c中光学元件302所在的位置称为第二位置。将光学元件302停留在第一位置的时间称为第一时刻。将光学元件302停留在第二位置的时间称为第二时刻。在第一时刻，光学元件302在第一位置输出第一光束。在第二时刻，光学元件302在第二位置输出第二光束。光学元件302输出的第一光束和第二光束分时的照射在接收面303。第一光束和第二光束在接收面303的照射范围存在重叠区域。空间光调制器103可以设置在重叠区域。The position where the optical element 302 is located in FIG. 4a is called the first position, and the position where the optical element 302 is located in FIG. 4b or 4c is called the second position. The time when the optical element 302 stays at the first position is called the first moment. The time when the optical element 302 stays at the second position is called the second moment. At the first moment, the optical element 302 outputs the first light beam at the first position. At the second moment, the optical element 302 outputs the second light beam at the second position. The first light beam and the second light beam output by the optical element 302 are irradiated on the receiving surface 303 in a time-sharing manner. There is an overlapping area in the irradiation range of the first beam and the second beam on the receiving surface 303 . The spatial light modulator 103 may be disposed in the overlapping area.
在前述的示例中，图4a中光学元件302所在的位置为第一位置，图4b或图4c中光学元件302所在的位置为第二位置。在实际应用中，光学元件302在任意不同的两个位置都可以称为第一位置和第二位置。例如，图4b中光学元件302所在的位置为第一位置。光学元件302用于在第一位置改变原始光束的传输方向，得到第一光束。图4c中光学元件302所在的位置为第二位置。光学元件302用于在第二位置改变原始光束的传输方向，得到第二光束。In the aforementioned example, the position where the optical element 302 is located in Figure 4a is the first position, and the position where the optical element 302 is located in Figure 4b or Figure 4c is the second position. In practical applications, any two different positions of the optical element 302 may be referred to as the first position and the second position. For example, the position of the optical element 302 in FIG. 4b is the first position. The optical element 302 is used to change the transmission direction of the original light beam at the first position to obtain the first light beam. The position of the optical element 302 in Figure 4c is the second position. The optical element 302 is used to change the transmission direction of the original light beam at the second position to obtain a second light beam.
根据前述图4a、图4b和图4c的描述可知，通过改变光学元件302的位置，会改变光束在接收面303上的照射范围。此时，由于第一光束和第二光束在接收面303上的照射范围不重合，会存在部分光束的能量浪费。为此，在本申请实施例中，还可以通过移动光源器件301使第一光束和第二光束在接收面303上的照射范围尽量重合。According to the aforementioned description of FIG. 4a, FIG. 4b, and FIG. 4c, it can be known that by changing the position of the optical element 302, the irradiation range of the light beam on the receiving surface 303 will be changed. At this time, since the irradiation ranges of the first beam and the second beam on the receiving surface 303 do not overlap, there will be a waste of energy of part of the beam. To this end, in the embodiment of the present application, the light source device 301 can also be moved so that the irradiation ranges of the first beam and the second beam on the receiving surface 303 overlap as much as possible.
图5为本申请实施例提供的显示设备的第六个结构示意图。如图5所示，显示设备101包括背光组件102和空间光调制器103(图中未示出)。空间光调制器103设置于接收面303。 背光组件102包括光源器件301和光学元件302。通过移动机构，可以使得背光组件102在位置A和位置B之间移动。FIG. 5 is a sixth structural schematic diagram of a display device provided by an embodiment of the present application. As shown in FIG. 5 , the display device 101 includes a backlight assembly 102 and a spatial light modulator 103 (not shown in the figure). The spatial light modulator 103 is provided on the receiving surface 303 . The backlight assembly 102 includes a light source device 301 and an optical element 302. The backlight assembly 102 can be moved between position A and position B through the moving mechanism.
在位置A时，光源器件301位于第三位置，光学元件302位于第一位置。在第一时刻，光源器件301用于输出第一原始光束。光学元件302用于根据第一原始光束得到第一光束。在位置A时，光学元件302的光轴相对于光源器件301的主光线产生向下的偏移。因此，第一光束的主光线(用与在位置A的光源器件301相连的虚线表示)的角度向下偏移。光学元件302用于改变第一原始光束的传输方向，得到第一光束。At position A, the light source device 301 is located at the third position, and the optical element 302 is located at the first position. At the first moment, the light source device 301 is used to output the first original light beam. The optical element 302 is used to obtain the first light beam according to the first original light beam. At position A, the optical axis of the optical element 302 is shifted downward relative to the chief ray of the light source device 301 . Therefore, the angle of the chief ray of the first light beam (indicated by the dashed line connected to the light source device 301 at position A) is shifted downward. The optical element 302 is used to change the transmission direction of the first original light beam to obtain the first light beam.
在位置B时，光源器件301位于第四位置，光学元件302位于第二位置。在第二时刻，光源器件301用于输出第二原始光束。光学元件302用于根据第二原始光束得到第二光束。在位置B时，光学元件302的光轴相对于光源器件301的主光线产生向上的偏移。因此，第二光束的主光线(用与在位置B的光源器件301相连的虚线表示)的角度向上偏移。光学元件302用于改变第二原始光束的传输方向，得到第二光束。At position B, the light source device 301 is located at the fourth position, and the optical element 302 is located at the second position. At the second moment, the light source device 301 is used to output the second original light beam. The optical element 302 is used to obtain the second beam according to the second original beam. At position B, the optical axis of the optical element 302 is shifted upward relative to the chief ray of the light source device 301 . Therefore, the angle of the chief ray of the second light beam (indicated by the dashed line connected to the light source device 301 at position B) is shifted upward. The optical element 302 is used to change the transmission direction of the second original light beam to obtain the second light beam.
关于空间光调制器103的描述，可以参考前述图1至图4c中任一图中的描述。当第一光束的主光线和第二光束的主光线在接收面303上重合时，第一光束和第二光束在接收面303上的照射范围重合。并且，第一光束和第二光束在接收面303上的照射范围的大小可以尽量等于空间光调制器103的大小。因此，本申请实施例提高光束的利用率。Regarding the description of the spatial light modulator 103, reference may be made to the description in any one of the aforementioned figures 1 to 4c. When the chief ray of the first light beam and the chief ray of the second light beam coincide on the receiving surface 303, the irradiation ranges of the first light beam and the second light beam on the receiving surface 303 coincide. Moreover, the size of the irradiation range of the first beam and the second beam on the receiving surface 303 can be as equal as possible to the size of the spatial light modulator 103 . Therefore, the embodiments of the present application improve the utilization rate of light beams.
在图5中，在位置A时，光学元件302需要使得主光线的角度向下偏移。在位置B时，光学元件302需要使得主光线的角度向上偏移。因此，第三位置和第一位置的相对位置与第四位置和第二位置的相对位置不同，即第三位置和第一位置的偏移量与第四位置和第二位置的偏移量不同。In Figure 5, at position A, the optical element 302 needs to shift the angle of the chief ray downward. At position B, the optical element 302 needs to shift the angle of the chief ray upward. Therefore, the relative position of the third position and the first position is different from the relative position of the fourth position and the second position, that is, the offset amount of the third position and the first position is different from the offset amount of the fourth position and the second position. .
根据前述图3至图5中的的描述可知，本申请实施例需要移动背光组件102的位置。在本申请实施例中，显示设备101还可以包括移动机构。移动机构用于移动光学元件302和/或光源器件301。为了降低移动机构的复杂性，并降低对移动空间的需求，移动机构可以通过直线移动光学元件302和/或光源器件301。According to the aforementioned descriptions in FIGS. 3 to 5 , it can be seen that the embodiment of the present application requires moving the position of the backlight assembly 102 . In this embodiment of the present application, the display device 101 may also include a moving mechanism. The moving mechanism is used to move the optical element 302 and/or the light source device 301 . In order to reduce the complexity of the moving mechanism and reduce the demand for moving space, the moving mechanism can move the optical element 302 and/or the light source device 301 in a straight line.
图6为本申请实施例提供的背光组件的结构示意图。如图6所示，背光组件102包括光源器件301和光学元件302。移动机构用于将背光组件102从位置A移动到位置B。其中，光源器件301用于从第三位置经过第一路径移动至第四位置。第四位置和第三位置位于第一平面601。第一路径平行于第一直线。第一直线位于第一平面601上。第一路径的长度为d1。光学元件302用于从第一位置经过第二路径移动到第二位置。第一位置和第二位置位于第二平面602。第二路径平行于第二直线。第二直线位于第二平面602上。第二路径的长度为d2。为了使得第一光束和第二光束在接收面303上的照射范围尽量重合，d2小于d1。第二平面602可以平行于第一平面601。第二路径可以平行于第一路径。第二平面602和第一平面601可以垂直于光源器件301的主光线。FIG. 6 is a schematic structural diagram of a backlight assembly provided by an embodiment of the present application. As shown in FIG. 6 , the backlight assembly 102 includes a light source device 301 and an optical element 302 . The moving mechanism is used to move the backlight assembly 102 from position A to position B. Wherein, the light source device 301 is used to move from the third position to the fourth position through the first path. The fourth position and the third position are located on the first plane 601. The first path is parallel to the first straight line. The first straight line is located on the first plane 601. The length of the first path is d1. Optical element 302 is used to move from a first position to a second position via a second path. The first position and the second position are located in the second plane 602. The second path is parallel to the second straight line. The second straight line is located on the second plane 602. The length of the second path is d2. In order to make the irradiation ranges of the first beam and the second beam on the receiving surface 303 overlap as much as possible, d2 is smaller than d1. The second plane 602 may be parallel to the first plane 601 . The second path may be parallel to the first path. The second plane 602 and the first plane 601 may be perpendicular to the chief ray of the light source device 301 .
在前述图5和图6中，描述了背光组件102从位置A移动到位置B。应理解，在实际应用中，为了提供稳定的立体视觉享受，背光组件102需要频繁的在位置A和位置B之间移动。因此，关于背光组件102从位置B移动到位置A的描述，可以参考图5或图6中的相关描述。若背光组件102在移动过程中输出光束，则可能会导致串扰，从而影响用户体验。为此，移动过程中，背光组件102可以不输出光束。In the aforementioned FIGS. 5 and 6 , the movement of the backlight assembly 102 from position A to position B is described. It should be understood that in practical applications, in order to provide stable stereoscopic viewing enjoyment, the backlight assembly 102 needs to frequently move between position A and position B. Therefore, regarding the description of the movement of the backlight assembly 102 from position B to position A, reference may be made to the relevant description in FIG. 5 or FIG. 6 . If the backlight assembly 102 outputs light beams during movement, crosstalk may occur, thereby affecting user experience. For this reason, the backlight assembly 102 may not output light beams during movement.
在前述图4aˉ图4c、图5和图6的描述中，光学元件302用于改变原始光束的传输方向，从而输出不同传输方向的第一光束和第二光束。在实际应用中，光学元件302还可以用于改 变原始光束的发散角，得到第一光束和/或第二光束。例如，在图5中，在位置A时，光学元件302用于增大第一原始光束的发散角，得到第一光束。在位置B时，光学元件302用于增大第二原始光束的发散角，得到第二光束。通过增大原始光束的扩散角，可以减小光源器件301和空间光调制器103之间的距离。因此，本申请实施例可以降低立体投影***的尺寸，从而提高用户体验。In the aforementioned descriptions of Figures 4a to 4c, Figures 5 and 6, the optical element 302 is used to change the transmission direction of the original light beam, thereby outputting the first light beam and the second light beam in different transmission directions. In practical applications, the optical element 302 can also be used to modify The divergence angle of the original beam is changed to obtain the first beam and/or the second beam. For example, in FIG. 5 , at position A, the optical element 302 is used to increase the divergence angle of the first original light beam to obtain the first light beam. At position B, the optical element 302 is used to increase the divergence angle of the second original light beam to obtain the second light beam. By increasing the divergence angle of the original light beam, the distance between the light source device 301 and the spatial light modulator 103 can be reduced. Therefore, embodiments of the present application can reduce the size of the stereoscopic projection system, thereby improving user experience.
在前述图5和图6的描述中，背光组件102用于在位置A和位置B之间移动。在实际应用中，背光组件102可以用于在M个位置之间移动。背光组件102用于以不同的角度输出M束光束。M束光束包括第一光束和第二光束。M个位置包括第一位置和第二位置。M个位置和M束光束一一对应。M为大于1的整数。下面以M等于3为例进行描述。In the aforementioned description of FIGS. 5 and 6 , the backlight assembly 102 is used to move between position A and position B. In practical applications, the backlight assembly 102 may be used to move between M positions. The backlight assembly 102 is used to output M beams at different angles. The M beams include a first beam and a second beam. The M positions include the first position and the second position. M positions correspond to M beams one-to-one. M is an integer greater than 1. The following description takes M equal to 3 as an example.
图7为本申请实施例提供的立体投影***的第二个结构示意图。如图7所示，立体投影***100包括显示设备101和扩散屏105。显示设备101包括背光组件102、空间光调制器103和镜头104。通过移动机构，可以使得背光组件102在位置A、位置B和位置C之间移动。Figure 7 is a second structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application. As shown in FIG. 7 , the stereoscopic projection system 100 includes a display device 101 and a diffusion screen 105 . Display device 101 includes a backlight assembly 102, a spatial light modulator 103, and a lens 104. Through the moving mechanism, the backlight assembly 102 can be moved between position A, position B and position C.
关于在位置A和位置B的描述，可以参考前述图5中的相关描述。在位置C时，光源器件301位于第五位置，光学元件302位于第六位置。在第三时刻，光源器件301用于输出第三原始光束。光学元件302用于根据第三原始光束得到第三光束。空间光调制器103用于调制第一光束、第二光束和第三光束，得到三路成像光。镜头104用于改变三路成像光的传输方向。三路成像光照射到三个视点。三路成像光和三个视点一一对应。三个视点包括视点1、视点2和视点3。Regarding the description at position A and position B, reference may be made to the relevant description in FIG. 5 . At position C, the light source device 301 is at the fifth position, and the optical element 302 is at the sixth position. At the third moment, the light source device 301 is used to output the third original light beam. The optical element 302 is used to obtain the third beam according to the third original beam. The spatial light modulator 103 is used to modulate the first light beam, the second light beam and the third light beam to obtain three paths of imaging light. The lens 104 is used to change the transmission direction of the three-way imaging light. Three imaging lights illuminate three viewpoints. The three imaging lights correspond to the three viewpoints one-to-one. The three viewpoints include viewpoint 1, viewpoint 2 and viewpoint 3.
在前述图7中，以M等于3为例进行描述。在实际应用中，M还可以为其它的数值，例如M等于4、6或8等。通过在M个位置之间移动，可以提供更多的观看位置。例如，在图7中，M个位置对应M个视点。位置B对应视点1。位置A对应视点3。位置C对应视点2。M个视点中的每个视点可以对应用户的一个眼睛。M个视点中的任意两个视点对应一个观看位置。例如，视点1对应用户的左眼，视点2对应用户的右眼。视点1和视点2对应观看位置1。又例如，视点2对应用户的左眼，视点3对应用户的右眼。视点2和视点3对应观看位置2。In the aforementioned FIG. 7 , M is equal to 3 as an example for description. In practical applications, M can also be other values, for example, M is equal to 4, 6 or 8, etc. By moving between M positions, more viewing positions can be provided. For example, in Figure 7, M positions correspond to M viewpoints. Position B corresponds to viewpoint 1. Position A corresponds to viewpoint 3. Position C corresponds to viewpoint 2. Each of the M viewpoints may correspond to one eye of the user. Any two viewpoints among the M viewpoints correspond to a viewing position. For example, viewpoint 1 corresponds to the user's left eye, and viewpoint 2 corresponds to the user's right eye. Viewpoint 1 and Viewpoint 2 correspond to viewing position 1. For another example, viewpoint 2 corresponds to the user's left eye, and viewpoint 3 corresponds to the user's right eye. Viewpoint 2 and Viewpoint 3 correspond to viewing position 2.
在实际应用中，N个视点中可能只有M个视点有用户观看。通过只在M个位置之间移动，可以提高单个用户的图像帧率。因此，为了提高用户体验，背光组件102可以在N个位置中的M个位置之间移动。N个位置对N个视点。此时，立体投影***100还可以包括人眼追踪模块和处理器。人眼追踪模块用于获取M个视点，例如M个视点的坐标。M个视点和M个位置一一对应。处理器用于根据M个视点控制背光组件在N个位置中的M个位置之间移动。下面以N等于3，M等于2为例进行描述。In practical applications, only M viewpoints among N viewpoints may be viewed by users. By moving only between M locations, the image frame rate for a single user can be improved. Therefore, to improve the user experience, the backlight assembly 102 can move between M positions among the N positions. N positions versus N viewpoints. At this time, the stereoscopic projection system 100 may also include an eye tracking module and a processor. The human eye tracking module is used to obtain M viewpoints, such as the coordinates of M viewpoints. There is a one-to-one correspondence between M viewpoints and M positions. The processor is used to control the backlight assembly to move between M positions among the N positions according to the M viewpoints. The following description takes N equal to 3 and M equal to 2 as an example.
图8为本申请实施例提供的立体投影***的第三个结构示意图。如图8所示，在图7的基础上，立体投影***100还包括人眼追踪模块802和处理器801。人眼追踪模块802用于获取M个视点。M个视点包括视点1和视点2。视点1对应位置A。视点2对应位置C。处理器801用于根据M个视点控制背光组件102在N个位置中的M个位置之间移动。N个位置分别包括位置A、位置B和位置C。M个位置包括位置A和位置C。Figure 8 is a third structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application. As shown in FIG. 8 , based on FIG. 7 , the stereoscopic projection system 100 also includes an eye tracking module 802 and a processor 801 . The human eye tracking module 802 is used to obtain M viewpoints. The M viewpoints include viewpoint 1 and viewpoint 2. Viewpoint 1 corresponds to position A. Viewpoint 2 corresponds to position C. The processor 801 is used to control the backlight assembly 102 to move between M positions among the N positions according to M viewpoints. The N positions include position A, position B and position C respectively. The M locations include location A and location C.
应理解，图8只是本申请实施例中提供的M个位置的一个示例。在实际应用中，处理器801可以根据M个视点控制背光组件102在相对应的M个位置之间移动。例如，M个视点包括视点2和视点3。M个位置包括位置B和位置C。又例如，M个视点包括视点1和视点3。M个位置包括位置B和位置A。It should be understood that FIG. 8 is only an example of the M locations provided in the embodiment of the present application. In practical applications, the processor 801 can control the backlight assembly 102 to move between corresponding M positions according to M viewpoints. For example, M viewpoints include viewpoint 2 and viewpoint 3. The M locations include location B and location C. For another example, the M viewpoints include viewpoint 1 and viewpoint 3. The M locations include location B and location A.
在实际应用中，当N值过大时，会降低单个用户的图像帧率，从而影响用户体验。因此， 本申请可以通过限制N的取值来提高单个用户的图像帧率，从而提高用户体验。例如，N的取值范围可以在2至10之间。N的取值可以为2或10。In practical applications, when the N value is too large, the image frame rate of a single user will be reduced, thus affecting the user experience. therefore, This application can improve the image frame rate of a single user by limiting the value of N, thereby improving user experience. For example, N can range from 2 to 10. The value of N can be 2 or 10.
当背光组件102在N个位置中的M个位置之间移动时，可以通过以下方式确定M个位置是否包括目标位置。具体地，若背光组件在目标位置停留，且背光组件在目标位置向空间光调制器103传输光束，则M个位置包括目标位置。When the backlight assembly 102 moves between M positions among the N positions, whether the M positions include the target position may be determined in the following manner. Specifically, if the backlight assembly stays at the target position and the backlight assembly transmits the light beam to the spatial light modulator 103 at the target position, then the M positions include the target position.
例如，在图8中，背光组件102在位置A和位置C之间移动。背光组件102在位置A停留1毫秒。在停留期间，背光组件102输出第一光束。停留1毫秒后，背光组件102花费1毫秒的时间从位置A移动到位置C。背光组件102在位置C停留1毫秒。在停留期间，背光组件102输出第二光束。停留1毫秒后，背光组件102花费1毫秒的时间从位置C移动到位置A。重复上述过程。上述过程中，背光组件102在位置A和位置C停留，且输出光束。因此，M个位置包括位置A和位置C。上述过程中，背光组件201可以不在位置B停留。因此，M个位置不包括位置B。For example, in Figure 8, backlight assembly 102 moves between position A and position C. The backlight assembly 102 stays in position A for 1 millisecond. During the dwell period, the backlight assembly 102 outputs the first light beam. After staying for 1 millisecond, the backlight assembly 102 takes 1 millisecond to move from position A to position C. The backlight assembly 102 stays in position C for 1 millisecond. During the dwell period, the backlight assembly 102 outputs the second light beam. After staying for 1 millisecond, the backlight assembly 102 takes 1 millisecond to move from position C to position A. Repeat the above process. During the above process, the backlight assembly 102 stays at position A and position C and outputs light beams. Therefore, the M locations include location A and location C. During the above process, the backlight assembly 201 may not stay at position B. Therefore, the M locations do not include location B.
又例如，背光组件102在位置A和位置B之间移动。背光组件201在位置A停留1毫秒。在停留期间，背光组件102输出第一光束。停留1毫秒后，背光组件102花费2毫秒的时间从位置A移动到位置B。背光组件102在位置B停留1毫秒。在停留期间，背光组件102输出第二光束。停留1毫秒后，背光组件102花费2毫秒的时间从位置B移动到位置A。重复上述过程。上述过程中，背光组件102在位置A和位置B停留，且输出光束。因此，M个位置包括位置A和位置B。上述过程中，背光组件102会经过位置C，但是背光组件102可以不在位置C停留，且在位置C时不输出光束。因此，M个位置不包括位置C。For another example, the backlight assembly 102 moves between position A and position B. The backlight assembly 201 stays in position A for 1 millisecond. During the dwell period, the backlight assembly 102 outputs the first light beam. After staying for 1 millisecond, the backlight assembly 102 takes 2 milliseconds to move from position A to position B. The backlight assembly 102 stays in position B for 1 millisecond. During the dwell period, the backlight assembly 102 outputs the second light beam. After staying for 1 millisecond, the backlight assembly 102 takes 2 milliseconds to move from position B to position A. Repeat the above process. During the above process, the backlight assembly 102 stays at position A and position B and outputs light beams. Therefore, M locations include location A and location B. During the above process, the backlight assembly 102 will pass through the position C, but the backlight assembly 102 may not stay at the position C and output no light beam at the position C. Therefore, the M positions do not include position C.
在实际应用中，用户与扩散屏105之间的距离会改变，从而应用用户的观看体验。例如，在图8中，用户的左眼对应的视点2与扩散屏105之间的距离为T1。此时，根据第二光束得到的成像光在视点2所在的成像面上的光斑大小和左眼的大小相适配。若用户靠近扩散屏105，则会使得光斑照射在左眼上的光斑变大。若光斑同时覆盖到用户的左眼和右眼，则会产生串扰，影响用户的立体视觉体验。In actual applications, the distance between the user and the diffusion screen 105 will change, thereby improving the user's viewing experience. For example, in FIG. 8 , the distance between the viewpoint 2 corresponding to the user's left eye and the diffusion screen 105 is T1. At this time, the spot size of the imaging light obtained according to the second light beam on the imaging plane where the viewpoint 2 is located matches the size of the left eye. If the user is close to the diffusion screen 105, the light spot irradiating the left eye will become larger. If the light spot covers the user's left eye and right eye at the same time, crosstalk will occur, affecting the user's stereoscopic visual experience.
为此，光学元件302可以为可变焦器件。人眼追踪模块802可以用于获取视点与扩散屏105之间的距离。处理器801用于根据上述距离调整光学元件302的焦距。例如，当用户接近扩散屏105时，处理器801减小光学元件302的焦距。当用户远离扩散屏105时，处理器801增大光学元件302的焦距。To this end, optical element 302 may be a variable focus device. The human eye tracking module 802 can be used to obtain the distance between the viewpoint and the diffusion screen 105 . The processor 801 is used to adjust the focal length of the optical element 302 according to the above distance. For example, as the user approaches diffuser screen 105, processor 801 reduces the focal length of optical element 302. As the user moves away from the diffusion screen 105, the processor 801 increases the focal length of the optical element 302.
根据前面的描述可知，当N值过大时，会降低单个用户的图像帧率，从而影响用户体验。因此，为了提供更多的观看位置，提高单个用户的图像帧率，立体投影***100可以包括K个背光组件。K为大于1的整数。K个背光组件中的每个背光组件用于以不同的角度向空间光调制器输出两束光束，得到2×K束光束。空间光调制器用于调制2×K束光束，得到2×K路成像光。空间光调制器用于以不同的角度向扩散屏输出2×K路成像光。关于任意一个背光组件的描述，可以参考前述图1至图8中的相关描述。下面以K等于3为例进行描述。According to the previous description, when the N value is too large, the image frame rate of a single user will be reduced, thus affecting the user experience. Therefore, in order to provide more viewing positions and improve the image frame rate for a single user, the stereoscopic projection system 100 may include K backlight assemblies. K is an integer greater than 1. Each of the K backlight assemblies is used to output two beams to the spatial light modulator at different angles to obtain 2×K beams. The spatial light modulator is used to modulate the 2×K beam to obtain 2×K imaging light. The spatial light modulator is used to output 2×K channels of imaging light to the diffusion screen at different angles. For the description of any backlight component, reference may be made to the relevant descriptions in FIGS. 1 to 8 . The following description takes K equal to 3 as an example.
图9为本申请实施例提供的立体投影***的第四个结构示意图。如图9所示，立体投影***100包括显示设备101和扩散屏105。显示设备101包括3个背光组件、空间光调制器103和镜头104。3个背光组件包括背光组件102、背光组件901和背光组件902。背光组件201分时的输出第一光束和第二光束。关于背光组件901和背光组件902的描述，可以参考背光组件102的描述。3个背光组件用于输出6束光束。Figure 9 is a fourth structural schematic diagram of a stereoscopic projection system provided by an embodiment of the present application. As shown in FIG. 9 , the stereoscopic projection system 100 includes a display device 101 and a diffusion screen 105 . The display device 101 includes three backlight assemblies, a spatial light modulator 103 and a lens 104. The three backlight assemblies include a backlight assembly 102, a backlight assembly 901 and a backlight assembly 902. The backlight assembly 201 outputs the first light beam and the second light beam in time division. For descriptions of the backlight assembly 901 and the backlight assembly 902, reference may be made to the description of the backlight assembly 102. 3 backlight components are used to output 6 beams.
空间光调制器103用于调制6束光束，得到6路成像光。镜头104用于改变6路成像光的传输方向，向扩散屏105传输6路成像光。扩散屏105用于对6束光束进行扩散，得到6 路成像光。6路成像光分别照射至视点1ˉ6。6路成像光和视点1ˉ6一一对应。视点1ˉ6中的两个视点和一个背光组件对应。在图9中，背光组件102对应视点1和视点2。背光组件901对应视点3和视点4。背光组件902对应视点5和视点6。The spatial light modulator 103 is used to modulate 6 light beams to obtain 6 channels of imaging light. The lens 104 is used to change the transmission direction of the six imaging lights and transmit the six imaging lights to the diffusion screen 105 . The diffusion screen 105 is used to diffuse 6 beams to obtain 6 Road imaging light. The 6 imaging lights are illuminated to the viewpoint 1ˉ6 respectively. The 6 imaging lights correspond to the viewpoint 1ˉ6 one-to-one. Two viewpoints in viewpoints 1ˉ6 correspond to one backlight component. In FIG. 9 , the backlight assembly 102 corresponds to viewpoint 1 and viewpoint 2 . The backlight assembly 901 corresponds to viewpoint 3 and viewpoint 4. The backlight assembly 902 corresponds to viewpoint 5 and viewpoint 6.
应理解，当立体投影***100包括K个背光组件时，一个背光组件可能不是对应一个观看位置。例如，在图9中，视点2和视点3组合为一个观看位置。视点4和视点5组合为一个观看位置。此时，背光组件102可以只输出和视点2对应的光束。背光组件902可以只输出和视点5对应的光束。背光组件901输出和视点4、视点5对应的两束光束。It should be understood that when the stereoscopic projection system 100 includes K backlight assemblies, one backlight assembly may not correspond to one viewing position. For example, in Figure 9, viewpoint 2 and viewpoint 3 are combined into one viewing position. Viewpoint 4 and Viewpoint 5 are combined into one viewing position. At this time, the backlight assembly 102 may only output the light beam corresponding to viewpoint 2. The backlight assembly 902 may only output the light beam corresponding to the viewpoint 5. The backlight assembly 901 outputs two light beams corresponding to viewpoint 4 and viewpoint 5.
应理解，当立体投影***100包括K个背光组件时，一个背光组件对应的两路成像光可能携带相同的图像信息。例如，在图9中，视点2和视点3组合为一个观看位置。视点4和视点5组合为一个观看位置。背光组件901输出和视点4、视点5对应的两束光束。此时，背光组件901输出的两束光束形成的两路成像光可以携带相同的图像信息。背光组件102对应的成像光和背光组件901对应的成像光携带不同的图像信息。背光组件902对应的成像光和背光组件901对应的成像光携带不同的图像信息。此时，上述任一观看位置的用户的双眼仍可以接收到携带不同图像信息的成像光，从而获取立体的视觉享受。It should be understood that when the stereoscopic projection system 100 includes K backlight assemblies, the two channels of imaging light corresponding to one backlight assembly may carry the same image information. For example, in Figure 9, viewpoint 2 and viewpoint 3 are combined into one viewing position. Viewpoint 4 and Viewpoint 5 are combined into one viewing position. The backlight assembly 901 outputs two light beams corresponding to viewpoint 4 and viewpoint 5. At this time, the two imaging lights formed by the two beams output by the backlight assembly 901 can carry the same image information. The imaging light corresponding to the backlight assembly 102 and the imaging light corresponding to the backlight assembly 901 carry different image information. The imaging light corresponding to the backlight assembly 902 and the imaging light corresponding to the backlight assembly 901 carry different image information. At this time, the eyes of the user at any of the above viewing positions can still receive imaging light carrying different image information, thereby obtaining three-dimensional visual enjoyment.
根据前面的描述可知，立体投影***100可以通过移动机构移动背光组件。当立体投影***100包括K个背光组件时，移动机构可以用于移动K个背光组件。为了降低移动机构的结构的复杂性，移动机构可以同方向的移动K个背光组件。此时，K个背光组件中每个背光组件在移动过程中的移动方向相同。例如，在图9中，在某一时刻，背光组件102、背光组件901和背光组件902同时向上移动。在另一时刻，背光组件102、背光组件901和背光组件902同时向下移动。According to the foregoing description, the stereoscopic projection system 100 can move the backlight assembly through a moving mechanism. When the stereoscopic projection system 100 includes K backlight assemblies, the moving mechanism may be used to move the K backlight assemblies. In order to reduce the structural complexity of the moving mechanism, the moving mechanism can move K backlight assemblies in the same direction. At this time, each of the K backlight assemblies moves in the same direction during movement. For example, in FIG. 9 , at a certain moment, the backlight assembly 102 , the backlight assembly 901 and the backlight assembly 902 move upward simultaneously. At another moment, the backlight assembly 102, the backlight assembly 901 and the backlight assembly 902 move downward simultaneously.
在实际应用中，弧形分布的多个光源器件会占用更大的空间。在本申请实施例中，当立体投影***100包括多个光源器件时，多个光源器件可以平行设置。平行设置是指多个光源器件的出光面处于同一平面，且第一光源器件和第二光源器件的光束输出方向相同。该平面垂直于输出方向。In practical applications, multiple light source devices distributed in an arc will occupy more space. In the embodiment of the present application, when the stereoscopic projection system 100 includes multiple light source devices, the multiple light source devices may be arranged in parallel. Parallel arrangement means that the light exit surfaces of the multiple light source devices are on the same plane, and the beam output directions of the first light source device and the second light source device are the same. This plane is perpendicular to the output direction.
在前述图4a至图6的示例中，光学元件302用于通过透射原始光束得到第一光束。根据前面的描述可知，光学元件302还可以为反射镜。因此，光学元件302也可以用于通过反射原始光束得到第一光束。关于光学元件302通过反射得到第一光束的描述，可以参考前述图4a至图6的描述。In the aforementioned examples of Figures 4a to 6, the optical element 302 is used to obtain the first light beam by transmitting the original light beam. According to the previous description, the optical element 302 can also be a mirror. Therefore, the optical element 302 can also be used to obtain the first beam by reflecting the original beam. Regarding the description of obtaining the first light beam through reflection by the optical element 302, reference may be made to the aforementioned descriptions of FIGS. 4a to 6 .
在实际应用中，用户与扩散屏105之间距离可能受到空间因素的限制。为了可以降低用户与扩散屏105之间的距离，可以通过曲面镜放大扩散屏105输出的成像光。图10为本申请实施例提供的投影***的结构示意图。如图10所示，投影***1100包括立体投影***100和曲面镜1101。立体投影***100用于输出两路成像光。关于立体投影***100的描述，可以参考前述图1至图9任一图中对立体投影***100的描述。曲面镜1101用于反射两路成像光，反射后的两路成像光之间存在夹角。曲面镜1101的焦距为f。扩散屏105与曲面镜1101的距离为d。In practical applications, the distance between the user and the diffusion screen 105 may be limited by spatial factors. In order to reduce the distance between the user and the diffusion screen 105, the imaging light output by the diffusion screen 105 can be amplified through a curved mirror. Figure 10 is a schematic structural diagram of a projection system provided by an embodiment of the present application. As shown in FIG. 10 , the projection system 1100 includes a stereoscopic projection system 100 and a curved mirror 1101 . The stereoscopic projection system 100 is used to output two channels of imaging light. Regarding the description of the stereoscopic projection system 100, reference may be made to the description of the stereoscopic projection system 100 in any of the aforementioned figures from FIG. 1 to FIG. 9 . The curved mirror 1101 is used to reflect two channels of imaging light, and there is an included angle between the two channels of imaging light after reflection. The focal length of the curved mirror 1101 is f. The distance between the diffusion screen 105 and the curved mirror 1101 is d.
曲面镜1101上的每个点和扩散屏105存在一个垂直距离。d可以为最远垂直距离。或者，d可以为扩散屏105的中心点与曲面镜1101上的目标点的直线距离。中心点输出的成像光照射到曲面镜1101上的目标点。d小于f。当d小于f时，曲面镜1101可以对虚像进行放大。因此，在用户和投影***1100之间的距离较近时，用户可以看到放大的虚像，从而提升用户体验。 There is a vertical distance between each point on the curved mirror 1101 and the diffusion screen 105 . d can be the furthest vertical distance. Alternatively, d may be the straight-line distance between the center point of the diffusion screen 105 and the target point on the curved mirror 1101 . The imaging light output from the center point irradiates the target point on the curved mirror 1101. d is less than f. When d is smaller than f, the curved mirror 1101 can amplify the virtual image. Therefore, when the distance between the user and the projection system 1100 is close, the user can see the enlarged virtual image, thereby improving the user experience.
参考图11，图11为本申请实施例提供的一种立体投影***的电路示意图。Referring to Figure 11, Figure 11 is a schematic circuit diagram of a stereoscopic projection system provided by an embodiment of the present application.
如图11所示，立体投影***中的电路主要包括包含处理器1001，内部存储器1002，外部存储器接口1003，音频模块1004，视频模块1005，电源模块1006，无线通信模块1007，I/O接口1008、视频接口1009、处理器局域网(Controller Area Network，CAN)收发器1010，显示电路1028和显示面板1029等。其中，处理器1001与其周边的元件，例如内部存储器1002，CAN收发器1010，音频模块1004，视频模块1005，电源模块1006，无线通信模块1007，I/O接口1008、视频接口1009、触控单元1010、显示电路1028可以通过总线连接。处理器1001可以称为前端处理器。As shown in Figure 11, the circuit in the stereoscopic projection system mainly includes a processor 1001, internal memory 1002, external memory interface 1003, audio module 1004, video module 1005, power module 1006, wireless communication module 1007, and I/O interface 1008 , video interface 1009, processor LAN (Controller Area Network, CAN) transceiver 1010, display circuit 1028 and display panel 1029, etc. Among them, the processor 1001 and its peripheral components, such as internal memory 1002, CAN transceiver 1010, audio module 1004, video module 1005, power module 1006, wireless communication module 1007, I/O interface 1008, video interface 1009, touch unit 1010. The display circuit 1028 can be connected through a bus. Processor 1001 may be called a front-end processor.
另外，本申请实施例示意的电路图并不构成对立体投影***的具体限定。在本申请另一些实施例中，立体投影***可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。In addition, the circuit diagram schematically illustrated in the embodiment of the present application does not constitute a specific limitation on the stereoscopic projection system. In other embodiments of the present application, the stereoscopic projection system may include more or less components than shown in the figures, or some components may be combined, or some components may be separated, or may be arranged differently. The components illustrated may be implemented in hardware, software, or a combination of software and hardware.
其中，处理器1001包括一个或多个处理单元，例如：处理器1001可以包括应用处理器(Application Processor，AP)，调制解调处理器，图形处理器(Graphics Processing Unit，GPU)，图像信号处理器(Image Signal Processor，ISP)，视频编解码器，数字信号处理器(Digital Signal Processor，DSP)，基带处理器，和/或神经网络处理器(Neural-Network Processing Unit，NPU)等。其中，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器中。Among them, the processor 1001 includes one or more processing units. For example, the processor 1001 may include an application processor (Application Processor, AP), a modem processor, a graphics processor (Graphics Processing Unit, GPU), an image signal processing unit. (Image Signal Processor, ISP), video codec, digital signal processor (Digital Signal Processor, DSP), baseband processor, and/or neural network processor (Neural-Network Processing Unit, NPU), etc. Among them, different processing units can be independent devices or integrated in one or more processors.
处理器1001中还可以设置存储器，用于存储指令和数据。例如，存储立体投影***的操作***、AR Creator软件包等。在一些实施例中，处理器1001中的存储器为高速缓冲存储器。该存储器可以保存处理器1001刚用过或循环使用的指令或数据。如果处理器1001需要再次使用该指令或数据，可从所述存储器中直接调用。避免了重复存取，减少了处理器1001的等待时间，因而提高了***的效率。The processor 1001 may also be provided with a memory for storing instructions and data. For example, storage operating system of stereoscopic projection system, AR Creator software package, etc. In some embodiments, the memory in processor 1001 is a cache memory. This memory can hold instructions or data that have just been used or are recycled by the processor 1001 . If the processor 1001 needs to use the instruction or data again, it can be called directly from the memory. Repeated access is avoided and the waiting time of the processor 1001 is reduced, thus improving the efficiency of the system.
另外，如果本实施例中的立体投影***安装在交通工具上，处理器1001的功能可以由交通工具上的域处理器来实现。In addition, if the stereoscopic projection system in this embodiment is installed on a vehicle, the function of the processor 1001 can be implemented by a domain processor on the vehicle.
在一些实施例中，立体投影***还可以包括多个连接到处理器1001的输入输出(Input/Output，I/O)接口1008。接口1008可以包括但不限于集成电路(Inter-Integrated Circuit，I2C)接口，集成电路内置音频(Inter-Integrated Circuit Sound，I2S)接口，脉冲编码调制(Pulse Code Modulation，PCM)接口，通用异步收发传输器(Universal Asynchronous Receiver/Transmitter，UART)接口，移动产业处理器接口(Mobile Industry Processor Interface，MIPI)，通用输入输出(General-Purpose Input/Output，GPIO)接口，用户标识模块(Subscriber Identity Module，SIM)接口，和/或通用串行总线(Universal Serial Bus，USB)接口等。上述I/O接口1008可以连接鼠标、触摸屏、键盘、摄像头、扬声器/喇叭、麦克风等设备，也可以连接立体投影***上的物理按键(例如音量键、亮度调节键、开关机键等)。In some embodiments, the stereoscopic projection system may also include a plurality of input/output (I/O) interfaces 1008 connected to the processor 1001. The interface 1008 may include but is not limited to an integrated circuit (Inter-Integrated Circuit, I2C) interface, an integrated circuit built-in audio (Inter-Integrated Circuit Sound, I2S) interface, a pulse code modulation (Pulse Code Modulation, PCM) interface, and universal asynchronous reception and transmission. Universal Asynchronous Receiver/Transmitter (UART) interface, Mobile Industry Processor Interface (MIPI), General-Purpose Input/Output (GPIO) interface, Subscriber Identity Module (SIM) ) interface, and/or Universal Serial Bus (Universal Serial Bus, USB) interface, etc. The above-mentioned I/O interface 1008 can be connected to devices such as a mouse, touch screen, keyboard, camera, speaker/speaker, microphone, etc., or can be connected to physical buttons on the stereoscopic projection system (such as volume keys, brightness adjustment keys, power on/off keys, etc.).
内部存储器1002可以用于存储计算机可执行程序代码，所述可执行程序代码包括指令。内部存储器1002可以包括存储程序区和存储数据区。其中，存储程序区可存储操作***，至少一个功能所需的应用程序(比如通话功能，时间设置功能，AR功能等)等。存储数据区可存储立体投影***使用过程中所创建的数据(比如电话簿，世界时间等)等。此外，内部存储器1002可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件，闪存器件，通用闪存存储器(Universal Flash Storage，UFS)等。处理器1001通过运行 存储在内部存储器1002的指令，和/或存储在设置于处理器1001中的存储器的指令，执行立体投影***的各种功能应用以及数据处理。Internal memory 1002 may be used to store computer executable program code, which includes instructions. The internal memory 1002 may include a program storage area and a data storage area. Among them, the stored program area can store the operating system, at least one application program required for the function (such as call function, time setting function, AR function, etc.). The storage data area can store data created during the use of the stereoscopic projection system (such as phone book, world time, etc.). In addition, the internal memory 1002 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc. Processor 1001 runs by The instructions stored in the internal memory 1002 and/or the instructions stored in the memory provided in the processor 1001 execute various functional applications and data processing of the stereoscopic projection system.
外部存储器接口1003可以用于连接外部存储器(例如Micro SD卡)，外部存储器可以根据需要存储数据或程序指令，处理器1001可以通过外部存储器接口1003对这些数据或程序执行进行读写等操作。The external memory interface 1003 can be used to connect an external memory (such as a Micro SD card). The external memory can store data or program instructions as needed. The processor 1001 can read and write these data or program instructions through the external memory interface 1003.
音频模块1004用于将数字音频信息转换成模拟音频信号输出，也用于将模拟音频输入转换为数字音频信号。音频模块1004还可以用于对音频信号编码和解码，例如进行放音或录音。在一些实施例中，音频模块1004可以设置于处理器1001中，或将音频模块1004的部分功能模块设置于处理器1001中。立体投影***可以通过音频模块1004以及应用处理器等实现音频功能。The audio module 1004 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals. The audio module 1004 can also be used to encode and decode audio signals, such as playing or recording. In some embodiments, the audio module 1004 may be disposed in the processor 1001, or some functional modules of the audio module 1004 may be disposed in the processor 1001. The stereoscopic projection system can implement audio functions through the audio module 1004 and application processor.
视频接口1009可以接收外部输入的音视频，其具体可以为高清晰多媒体接口(High Definition Multimedia Interface，HDMI)，数字视频接口(Digital Visual Interface，DVI)，视频图形阵列(Video Graphics Array，VGA)，显示端口(Display port，DP)，低压差分信号(Low Voltage Differential Signaling，LVDS)接口等，视频接口1009还可以向外输出视频。例如，立体投影***通过视频接口接收导航***发送的视频数据或者接收域处理器发送的视频数据。The video interface 1009 can receive external audio and video input, which can specifically be a High Definition Multimedia Interface (HDMI), a Digital Video Interface (Digital Visual Interface, DVI), or a Video Graphics Array (VGA). Display port (DP), Low Voltage Differential Signaling (LVDS) interface, etc. The video interface 1009 can also output video. For example, the stereoscopic projection system receives video data sent by the navigation system through the video interface or receives video data sent by the domain processor.
视频模块1005可以对视频接口1009输入的视频进行解码，例如进行H.264解码。视频模块还可以对立体投影***采集到的视频进行编码，例如对外接的摄像头采集到的视频进行H.264编码。此外，处理器1001也可以对视频接口1009输入的视频进行解码，然后将解码后的图像信号输出到显示电路。The video module 1005 can decode the video input by the video interface 1009, for example, perform H.264 decoding. The video module can also encode the video collected by the stereoscopic projection system, such as H.264 encoding of the video collected by an external camera. In addition, the processor 1001 can also decode the video input from the video interface 1009, and then output the decoded image signal to the display circuit.
进一步的，上述立体立体投影***还包括CAN收发器1010，CAN收发器1010可以连接到汽车的CAN总线(CAN BUS)。通过CAN总线，立体投影***可以与车载娱乐***(音乐、电台、视频模块)、车辆状态***等进行通信。例如，用户可以通过操作立体投影***来开启车载音乐播放功能。车辆状态***可以将车辆状态信息(车门、安全带等)发送给立体投影***进行显示。Further, the above-mentioned stereoscopic projection system also includes a CAN transceiver 1010, and the CAN transceiver 1010 can be connected to the CAN bus (CAN BUS) of the car. Through the CAN bus, the stereoscopic projection system can communicate with the vehicle entertainment system (music, radio, video module), vehicle status system, etc. For example, users can activate the car music playback function by operating the stereoscopic projection system. The vehicle status system can send vehicle status information (doors, seat belts, etc.) to the stereoscopic projection system for display.
显示电路1028和显示面板1029共同实现显示图像的功能。显示电路1028接收处理器1001输出的图像信号，对该图像信号进行处理后输入显示面板1029进行成像。显示电路1028还可以对显示面板1029显示的图像进行控制。例如，控制显示亮度或对比度等参数。其中，显示电路1028可以包括驱动电路、图像控制电路等。其中，上述显示电路1028和显示面板1029可以位于像素组件502中。The display circuit 1028 and the display panel 1029 jointly implement the function of displaying images. The display circuit 1028 receives the image signal output by the processor 1001, processes the image signal, and then inputs it into the display panel 1029 for imaging. The display circuit 1028 can also control the image displayed by the display panel 1029. For example, control parameters such as display brightness or contrast. Among them, the display circuit 1028 may include a driving circuit, an image control circuit, and the like. Wherein, the above-mentioned display circuit 1028 and display panel 1029 may be located in the pixel assembly 502.
显示面板1029用于根据输入的图像信号对光源输入的光束进行调制，从而生成可视图像。显示面板1029可以为硅基液晶面板、液晶显示面板或数字微镜设备。The display panel 1029 is used to modulate the light beam input from the light source according to the input image signal, thereby generating a visible image. The display panel 1029 may be a silicon-based liquid crystal panel, a liquid crystal display panel or a digital micromirror device.
在本实施例中，视频接口1009可以接收输入的视频数据(或称为视频源)，视频模块1005进行解码和/或数字化处理后输出图像信号至显示电路1028，显示电路1028根据输入的图像信号驱动显示面板1029将光源发出的光束进行成像，从而生成可视图像(发出成像光)。In this embodiment, the video interface 1009 can receive input video data (also called a video source). The video module 1005 decodes and/or digitizes the data and then outputs the image signal to the display circuit 1028. The display circuit 1028 responds to the input image signal. The display panel 1029 is driven to image the light beam emitted by the light source, thereby generating a visible image (emitting imaging light).
电源模块1006用于根据输入的电力(例如直流电)为处理器1001和光源提供电源，电源模块1006中可以包括可充电电池，可充电电池可以为处理器1001和光源提供电源。光源发出的光可以传输到显示面板1029进行成像，从而形成图像光信号(成像光)。The power module 1006 is used to provide power to the processor 1001 and the light source according to the input power (eg, direct current). The power module 1006 may include a rechargeable battery, and the rechargeable battery may provide power to the processor 1001 and the light source. The light emitted by the light source can be transmitted to the display panel 1029 for imaging, thereby forming an image light signal (imaging light).
此外，上述电源模块1006可以连接到汽车的供电模块(例如动力电池)，由汽车的供电模块为立体投影***的电源模块1006供电。In addition, the power supply module 1006 can be connected to a power supply module (such as a power battery) of the car, and the power supply module of the car supplies power to the power supply module 1006 of the stereoscopic projection system.
无线通信模块1007可以使得立体投影***与外界进行无线通信，其可以提供无线局域网 (Wireless Local Area Networks，WLAN)(如无线保真(Wireless Fidelity，Wi-Fi)网络)，蓝牙(Bluetooth，BT)，全球导航卫星***(Global Navigation Satellite System，GNSS)，调频(Frequency Modulation，FM)，近距离无线通信技术(Near Field Communication，NFC)，红外技术(Infrared，IR)等无线通信的解决方案。无线通信模块1007可以是集成至少一个通信处理模块的一个或多个器件。无线通信模块1007经由天线接收电磁波，将电磁波信号调频以及滤波处理，将处理后的信号发送到处理器1001。无线通信模块1007还可以从处理器1001接收待发送的信号，对其进行调频，放大，经天线转为电磁波辐射出去。The wireless communication module 1007 can enable the stereoscopic projection system to communicate wirelessly with the outside world, and can provide a wireless local area network (Wireless Local Area Networks, WLAN) (such as Wireless Fidelity (Wi-Fi) network), Bluetooth (Bluetooth, BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM) ), near field communication technology (Near Field Communication, NFC), infrared technology (Infrared, IR) and other wireless communication solutions. The wireless communication module 1007 may be one or more devices integrating at least one communication processing module. The wireless communication module 1007 receives electromagnetic waves through the antenna, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 1001 . The wireless communication module 1007 can also receive the signal to be sent from the processor 1001, frequency modulate it, amplify it, and convert it into electromagnetic waves through the antenna for radiation.
另外，视频模块1005进行解码的视频数据除了通过视频接口1009输入之外，还可以通过无线通信模块1007以无线的方式接收或从内部存储器1002或外部存储器中读取，例如立体投影***可以通过车内的无线局域网从终端设备或车载娱乐***接收视频数据，立体投影***还可以读取内部存储器1002或外部存储器中存储的音视频数据。In addition, in addition to being input through the video interface 1009, the video data decoded by the video module 1005 can also be received wirelessly through the wireless communication module 1007 or read from the internal memory 1002 or external memory. For example, the stereoscopic projection system can The wireless local area network in the system receives video data from the terminal device or the vehicle entertainment system, and the stereoscopic projection system can also read the audio and video data stored in the internal memory 1002 or the external memory.
本申请实施例还提供了一种交通工具，该交通工具安装有前述任意一种立体投影***。立体投影***用于输出两路成像光。两路成像光携带不同视差的图像信息。输出的两路成像光经过反射镜反射至挡风玻璃，挡风玻璃进一步反射两路成像光，形成虚像。虚像位于挡风玻璃的一侧，驾驶员或乘客位于挡风玻璃的另一侧。反射后的两路成像光分别照射至驾驶员或乘客的双眼。例如，第一路成像光照射至乘客的左眼。第二路成像光照射至乘客的右眼。An embodiment of the present application also provides a vehicle equipped with any one of the aforementioned stereoscopic projection systems. The stereoscopic projection system is used to output two channels of imaging light. The two imaging lights carry image information with different parallaxes. The output two-way imaging light is reflected to the windshield through the reflector, and the windshield further reflects the two-way imaging light to form a virtual image. The virtual image is on one side of the windshield, with the driver or passenger on the other side. The reflected two-channel imaging light shines on the eyes of the driver or passenger respectively. For example, the first imaging light hits the passenger's left eye. The second imaging light is illuminated to the passenger's right eye.
本申请实施例还提供了一种交通工具，该交通工具安装有前述图10中的投影***。图12为本申请实施例提供投影***安装在交通工具的示意图。交通工具的挡风玻璃可以作为投影***中的曲面镜。投影***中的立体投影***100位于挡风玻璃的同一侧。立体投影***100用于输出两路成像光。两路成像光携带不同视差的图像信息。挡风玻璃用于反射两路成像光，形成虚像。虚像位于挡风玻璃的一侧，驾驶员或乘客位于挡风玻璃的另一侧。反射后的两路成像光分别照射至驾驶员或乘客的双眼。例如，第一路成像光照射至乘客的左眼。第二路成像光照射至乘客的右眼。An embodiment of the present application also provides a vehicle equipped with the projection system in FIG. 10 . Figure 12 is a schematic diagram of a projection system installed on a vehicle according to an embodiment of the present application. Vehicle windshields can serve as curved mirrors in projection systems. The stereoscopic projection system 100 in the projection system is located on the same side of the windshield. The stereoscopic projection system 100 is used to output two channels of imaging light. The two imaging lights carry image information with different parallaxes. The windshield is used to reflect two paths of imaging light to form a virtual image. The virtual image is on one side of the windshield, with the driver or passenger on the other side. The reflected two-channel imaging light shines on the eyes of the driver or passenger respectively. For example, the first imaging light hits the passenger's left eye. The second imaging light is illuminated to the passenger's right eye.
示例性的，交通工具可以为轿车、卡车、摩托车、公共汽车、船、飞机、直升飞机、割草机、娱乐车、游乐场车辆、施工设备、电车、高尔夫球车、火车、和手推车等，本申请实施例不作特别的限定。立体投影***可以安装于交通工具的仪表板(Instrument Panel，IP)台上，位于副驾位置或主驾位置，也可以安装在座椅后背。上述立体投影***应用在交通工具时，可以称为抬头显示(Head Up Display，HUD)，可以用于显示导航信息、车速、电量/油量等。By way of example, vehicles may be cars, trucks, motorcycles, buses, boats, airplanes, helicopters, lawn mowers, recreational vehicles, playground vehicles, construction equipment, trolleys, golf carts, trains, and handcarts etc., the embodiments of the present application are not particularly limited. The stereoscopic projection system can be installed on the instrument panel (IP) of the vehicle, in the passenger or main driver position, or on the back of the seat. When the above-mentioned stereoscopic projection system is used in transportation, it can be called a head-up display (HUD), and can be used to display navigation information, vehicle speed, power/fuel level, etc.
图13为本申请请实施例提供的交通工具的一种可能的功能框架示意图。Figure 13 is a schematic diagram of a possible functional framework of the vehicle provided by the embodiment of this application.
如图13示，交通工具的功能框架中可包括各种子***，例如，图示中的控制***14、传感器***12、一个或多个***设备16(图示以一个为例示出)、电源18、计算机***20、显示***32。可选地，交通工具还可包括其他功能***，例如，为交通工具提供动力的引擎***等等，本申请这里不做限定。As shown in Figure 13, the functional framework of the vehicle may include various subsystems, such as the control system 14 in the figure, the sensor system 12, one or more peripheral devices 16 (one is shown as an example in the figure), a power supply 18. Computer system 20, display system 32. Optionally, the vehicle may also include other functional systems, such as an engine system that provides power for the vehicle, etc., which is not limited in this application.
其中，传感器***12可包括若干检测装置，这些检测装置能感受到被测量的信息，并将感受到的信息按照一定规律将其转换为电信号或者其他所需形式的信息输出。如图示出，这些检测装置可包括全球定位***(global positioning system，GPS)、车速传感器、惯性测量单元(inertial measurement unit，IMU)、雷达单元、激光测距仪、摄像装置、轮速传感 器、转向传感器、档位传感器、或者其他用于自动检测的元件等等，本申请并不做限定。Among them, the sensor system 12 may include several detection devices, which can sense the measured information and convert the sensed information into electrical signals or other required forms of information output according to certain rules. As shown in the figure, these detection devices may include a global positioning system (GPS), a vehicle speed sensor, an inertial measurement unit (IMU), a radar unit, a laser rangefinder, a camera device, and a wheel speed sensor. sensor, steering sensor, gear sensor, or other components for automatic detection, etc., this application is not limited.
控制***14可包括若干元件，例如图示出的转向单元、制动单元、照明***、自动驾驶***、地图导航***、网络对时***和障碍规避***。可选地，控制***14还可包括诸如用于控制车辆行驶速度的油门处理器及发动机处理器等元件，本申请不做限定。The control system 14 may include several elements, such as the illustrated steering unit, braking unit, lighting system, automatic driving system, map navigation system, network time synchronization system and obstacle avoidance system. Optionally, the control system 14 may also include components such as a throttle processor and an engine processor for controlling the driving speed of the vehicle, which are not limited in this application.
***设备16可包括若干元件，例如图示中的通信***、触摸屏、用户接口、麦克风以及扬声器等等。其中，通信***用于实现交通工具和除交通工具之外的其他设备之间的网络通信。在实际应用中，通信***可采用无线通信技术或有线通信技术实现交通工具和其他设备之间的网络通信。该有线通信技术可以是指车辆和其他设备之间通过网线或光纤等方式通信。Peripheral device 16 may include several elements, such as a communication system, a touch screen, a user interface, a microphone and a speaker as shown, among others. Among them, the communication system is used to realize network communication between vehicles and other devices other than vehicles. In practical applications, the communication system can use wireless communication technology or wired communication technology to realize network communication between vehicles and other devices. The wired communication technology may refer to communication between vehicles and other devices through network cables or optical fibers.
电源18代表为车辆提供电力或能源的***，其可包括但不限于再充电的锂电池或铅酸电池等。在实际应用中，电源中的一个或多个电池组件用于提供车辆启动的电能或能量，电源的种类和材料本申请并不限定。The power source 18 represents a system that provides power or energy to the vehicle, which may include, but is not limited to, rechargeable lithium batteries or lead-acid batteries, etc. In practical applications, one or more battery components in the power supply are used to provide electric energy or energy for starting the vehicle. The type and material of the power supply are not limited in this application.
交通工具的若干功能均由计算机***20控制实现。计算机***20可包括一个或多个处理器2001(图示以一个处理器为例示出)和存储器2002(也可称为存储装置)。在实际应用中，该存储器2002也在计算机***20内部，也可在计算机***20外部，例如作为交通工具中的缓存等，本申请不做限定。其中，Several functions of the vehicle are controlled by the computer system 20 . The computer system 20 may include one or more processors 2001 (one processor is shown as an example) and a memory 2002 (which may also be referred to as a storage device). In practical applications, the memory 2002 may also be inside the computer system 20 or outside the computer system 20 , for example, as a cache in a vehicle, etc., which is not limited by this application. in,
关于处理器2001的描述，可以参考前述处理器1001的描述。处理器2001可包括一个或多个通用处理器，例如，图形处理器(graphic processing unit，GPU)。处理器2001可用于运行存储器2002中存储的相关程序或程序对应的指令，以实现车辆的相应功能。Regarding the description of the processor 2001, reference may be made to the foregoing description of the processor 1001. Processor 2001 may include one or more general-purpose processors, such as a graphics processing unit (GPU). The processor 2001 may be used to run relevant programs or instructions corresponding to the programs stored in the memory 2002 to implement corresponding functions of the vehicle.
存储器2002可以包括易失性存储器(volatile memory)，例如，RAM；存储器也可以包括非易失性存储器(non-volatile memory)，例如，ROM、快闪存储器(flash memory)或固态硬盘(solid state drives，SSD)；存储器2002还可以包括上述种类的存储器的组合。存储器2002可用于存储一组程序代码或程序代码对应的指令，以便于处理器2001调用存储器2002中存储的程序代码或指令以实现车辆的相应功能。该功能包括但不限于图13所示的车辆功能框架示意图中的部分功能或全部功能。本申请中，存储器2002中可存储一组用于车辆控制的程序代码，处理器2001调用该程序代码可控制车辆安全行驶，关于如何实现车辆安全行驶具体在本申请下文详述。Memory 2002 may include volatile memory (volatile memory), such as RAM; memory may also include non-volatile memory (non-volatile memory), such as ROM, flash memory (flash memory) or solid state drive (solid state). drives, SSD); the memory 2002 may also include a combination of the above types of memory. The memory 2002 can be used to store a set of program codes or instructions corresponding to the program codes, so that the processor 2001 can call the program codes or instructions stored in the memory 2002 to implement corresponding functions of the vehicle. This function includes but is not limited to some or all of the functions in the vehicle function framework diagram shown in Figure 13. In this application, a set of program codes for vehicle control can be stored in the memory 2002, and the processor 2001 calls the program codes to control the safe driving of the vehicle. How to achieve safe driving of the vehicle will be described in detail below in this application.
可选地，存储器2002除了存储程序代码或指令之外，还可存储诸如道路地图、驾驶线路、传感器数据等信息。计算机***20可以结合车辆功能框架示意图中的其他元件，例如传感器***中的传感器、GPS等，实现车辆的相关功能。例如，计算机***20可基于传感器***12的数据输入控制交通工具的行驶方向或行驶速度等，本申请不做限定。Optionally, in addition to storing program codes or instructions, the memory 2002 may also store information such as road maps, driving routes, sensor data, and the like. The computer system 20 can be combined with other elements in the vehicle functional framework diagram, such as sensors in the sensor system, GPS, etc., to implement vehicle-related functions. For example, the computer system 20 can control the driving direction or driving speed of the vehicle based on data input from the sensor system 12, which is not limited in this application.
显示***32可包括若干元件，例如，处理器、曲面镜和前文中描述的立体投影***100。处理器用于根据用户指令生成图像(如生成包含车速、电量/油量等车辆状态的图像以及增强现实AR内容的图像)，并将该图像内容发送至立体投影***100。立体投影***100用于输出携带不同图像信息的两路成像光。挡风玻璃为曲面镜。挡风玻璃用于反射或透射两路成像光，以使在驾驶员或乘客的前方呈现图像内容对应的虚像。需要说明的是，显示***32中的部分元件的功能也可以由车辆的其它子***来实现，例如，处理器也可以为控制***14中的元件。Display system 32 may include several elements, such as a processor, a curved mirror, and the stereoscopic projection system 100 described above. The processor is used to generate an image according to user instructions (for example, generate an image including vehicle status such as vehicle speed, power/fuel level, and an image of augmented reality AR content), and send the image content to the stereoscopic projection system 100 . The stereoscopic projection system 100 is used to output two channels of imaging light carrying different image information. The windshield is a curved mirror. The windshield is used to reflect or transmit two-way imaging light, so that a virtual image corresponding to the image content is presented in front of the driver or passenger. It should be noted that the functions of some components in the display system 32 can also be implemented by other subsystems of the vehicle. For example, the processor can also be a component in the control system 14 .
其中，本申请图13出包括四个子***，传感器***12、控制***14、计算机***20和显示***32仅为示例，并不构成限定。在实际应用中，交通工具可根据不同功能对车辆中的若干元件进行组合，从而得到相应不同功能的子***。在实际应用中，交通工具可包括更多或更少的***或元件，本申请不做限定。 Among them, Figure 13 of this application includes four subsystems. The sensor system 12, the control system 14, the computer system 20 and the display system 32 are only examples and do not constitute a limitation. In practical applications, vehicles can combine several components in the vehicle according to different functions to obtain subsystems with corresponding different functions. In actual applications, the vehicle may include more or fewer systems or components, which is not limited by this application.
在本说明书的描述中，具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
以上，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。 The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present application, and all of them should be covered. within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (19)

  1. 一种立体投影***，其特征在于，包括背光组件、空间光调制器和扩散屏，其中：A stereoscopic projection system, characterized by including a backlight assembly, a spatial light modulator and a diffusion screen, wherein:
    所述背光组件用于以不同的角度向所述空间光调制器输出两束光束；The backlight assembly is configured to output two beams of light to the spatial light modulator at different angles;
    所述空间光调制器用于根据不同的图像信息调制所述两束光束，得到两路成像光，以不同的角度向所述扩散屏输出所述两路成像光；The spatial light modulator is used to modulate the two beams of light according to different image information to obtain two paths of imaging light, and output the two paths of imaging light to the diffusion screen at different angles;
    所述扩散屏用于对所述两路成像光进行扩散，以不同的角度输出扩散后的所述两路成像光。The diffusion screen is used to diffuse the two imaging lights and output the diffused two imaging lights at different angles.
  2. 根据权利要求1所述的立体投影***，其特征在于，所述背光组件包括第一光源器件和第二光源器件，所述两束光束包括第一光束和第二光束；The stereoscopic projection system according to claim 1, wherein the backlight assembly includes a first light source device and a second light source device, and the two light beams include a first light beam and a second light beam;
    所述第一光源器件和所述第二光源器件用于分时的输出所述第一光束和所述第二光束，所述第一光源器件和所述第一光束对应，所述第二光源器件和所述第二光束对应。The first light source device and the second light source device are used to output the first light beam and the second light beam in a time-sharing manner. The first light source device corresponds to the first light beam, and the second light source The device corresponds to the second beam.
  3. 根据权利要求1所述的立体投影***，其特征在于，所述两束光束包括第一光束和第二光束；The stereoscopic projection system according to claim 1, wherein the two light beams include a first light beam and a second light beam;
    所述背光组件用于以不同的角度向所述空间光调制器输出两束光束包括；所述背光组件用于在第一位置输出所述第一光束，在第二位置输出所述第二光束。The backlight assembly is configured to output two beams of light to the spatial light modulator at different angles. The backlight assembly is configured to output the first beam of light at a first position and the second beam of light at a second position. .
  4. 根据权利要求3所述的立体投影***，其特征在于，所述背光组件包括光源器件和光学元件；The stereoscopic projection system according to claim 3, wherein the backlight assembly includes a light source device and an optical element;
    所述光源器件相对所述空间光调制器的位置不变，所述光源器件用于输出原始光束；The position of the light source device relative to the spatial light modulator remains unchanged, and the light source device is used to output the original light beam;
    所述背光组件用于在第一位置输出所述第一光束包括：所述光学元件用于在所述第一位置根据所述原始光束得到所述第一光束；The backlight assembly for outputting the first light beam at a first position includes: the optical element is used for obtaining the first light beam according to the original light beam at the first position;
    所述背光组件用于在第二位置输出所述第二光束包括：所述光学元件用于在所述第二位置改变所述原始光束的传输方向，得到所述第二光束。The backlight assembly is configured to output the second light beam at the second position, including: the optical element is used to change the transmission direction of the original light beam at the second position to obtain the second light beam.
  5. 根据权利要求4所述的立体投影***，其特征在于，所述光学元件输出的所述第一光束和所述第二光束存在重叠区域，所述空间光调制器位于所述重叠区域。The stereoscopic projection system according to claim 4, wherein the first light beam and the second light beam output by the optical element have an overlapping area, and the spatial light modulator is located in the overlapping area.
  6. 根据权利要求3所述的立体投影***，其特征在于，所述背光组件包括光源器件和光学元件；The stereoscopic projection system according to claim 3, wherein the backlight assembly includes a light source device and an optical element;
    所述光源器件用于在第三位置输出第一原始光束；The light source device is used to output the first original light beam at a third position;
    所述背光组件用于在第一位置输出所述第一光束包括：所述光学元件用于在所述第一位置根据所述第一原始光束得到所述第一光束；The backlight assembly for outputting the first light beam at a first position includes: the optical element is used for obtaining the first light beam according to the first original light beam at the first position;
    所述光源器件用于在第四位置输出第二原始光束；The light source device is configured to output a second original light beam at a fourth position;
    所述背光组件用于在第二位置输出所述第二光束包括：所述光学元件用于在所述第二位置改变所述第二原始光束的传输方向，得到所述第二光束；The backlight assembly for outputting the second light beam at the second position includes: the optical element is used for changing the transmission direction of the second original light beam at the second position to obtain the second light beam;
    其中，所述第三位置和所述第一位置的偏移量与所述第四位置和所述第二位置的偏移量不同。Wherein, the offset amount between the third position and the first position is different from the offset amount between the fourth position and the second position.
  7. 根据权利要求6所述的立体投影***，其特征在于，所述第三位置和所述第四位置位于第一平面，所述光源器件用于从所述第三位置经过第一路径移动至所述第四位置。The stereoscopic projection system of claim 6, wherein the third position and the fourth position are located on a first plane, and the light source device is used to move from the third position to the first position through a first path. Describe the fourth position.
  8. 根据权利要求7所述的立体投影***，其特征在于，所述第一位置和所述第二位置位 于第二平面，所述光学元件用于从所述第一位置经过第二路径移动至所述第二位置。The stereoscopic projection system according to claim 7, wherein the first position and the second position are In the second plane, the optical element is configured to move from the first position to the second position through a second path.
  9. 根据权利要求8所述的立体投影***，其特征在于，所述第一平面和所述第二平面平行，所述第一路径和所述第二路径平行，所述第二路径的长度小于所述第一路径的长度。The stereoscopic projection system according to claim 8, wherein the first plane and the second plane are parallel, the first path and the second path are parallel, and the length of the second path is less than the length of the second path. The length of the first path.
  10. 根据权利要求6至9中任意一项所述的立体投影***，其特征在于，The stereoscopic projection system according to any one of claims 6 to 9, characterized in that:
    所述光学元件还用于在所述第二位置改变所述第二原始光束的发散角，得到所述第二光束。The optical element is also used to change the divergence angle of the second original light beam at the second position to obtain the second light beam.
  11. 根据权利要求10所述的立体投影***，其特征在于，The stereoscopic projection system according to claim 10, characterized in that:
    所述光学元件还用于在所述第二位置改变所述第二原始光束的发散角，得到所述第二光束包括：所述光学元件用于增大所述第二原始光束的扩散角，得到所述第二光束。The optical element is also used to change the divergence angle of the second original light beam at the second position. Obtaining the second light beam includes: the optical element is used to increase the divergence angle of the second original light beam, The second beam is obtained.
  12. 根据权利要求4至11中任意一项所述的立体投影***，其特征在于，所述光学元件为可变焦器件。The stereoscopic projection system according to any one of claims 4 to 11, characterized in that the optical element is a variable focus device.
  13. 根据权利要求3至11中任意一项所述的立体投影***，其特征在于，The stereoscopic projection system according to any one of claims 3 to 11, characterized in that:
    所述背光组件用于以不同的角度向所述空间光调制器输出两束光束包括：所述背光组件用于在M个位置之间移动，以不同的角度输出M束光束，所述M束光束包括所述两束光束，所述M个位置包括所述第一位置和所述第二位置，所述M个位置和所述M束光束一一对应，所述M为大于1的整数。The backlight assembly is configured to output two beams of light to the spatial light modulator at different angles. The backlight assembly is configured to move between M positions and output M beams of light at different angles. The M beams are The light beam includes the two light beams, the M positions include the first position and the second position, the M positions correspond to the M light beams one-to-one, and M is an integer greater than 1.
  14. 根据权利要求13所述的立体投影***，其特征在于，所述立体投影***还包括人眼追踪模块；The stereoscopic projection system according to claim 13, characterized in that the stereoscopic projection system further includes a human eye tracking module;
    所述人眼追踪模块用于获取M个视点，所述M个视点和所述M个位置一一对应；The human eye tracking module is used to obtain M viewpoints, and the M viewpoints correspond to the M positions one-to-one;
    所述背光组件用于在M个位置之间移动包括：所述背光组件用于根据所述M个视点在N个位置中的所述M个位置之间移动。The backlight assembly is configured to move between M positions. The backlight assembly is configured to move between the M positions among the N positions according to the M viewpoints.
  15. 根据权利要求14所述的立体投影***，其特征在于，所述N的取值范围在2至10之间。The stereoscopic projection system according to claim 14, wherein the value of N ranges from 2 to 10.
  16. 根据权利要求1至15中任意一项所述的立体投影***，其特征在于，The stereoscopic projection system according to any one of claims 1 to 15, characterized in that:
    所述立体投影***包括背光组件和空间光调制器包括：所述立体投影***包括K个背光组件和所述空间光调制器，K为大于1的整数；The stereoscopic projection system includes a backlight component and a spatial light modulator including: the stereoscopic projection system includes K backlight components and the spatial light modulator, where K is an integer greater than 1;
    所述K个背光组件中的每个背光组件用于以不同的角度向所述空间光调制器输出两束光束，得到2×K束光束；Each of the K backlight assemblies is used to output two beams of light to the spatial light modulator at different angles to obtain 2×K beams;
    所述空间光调制器用于根据不同的图像信息调制所述两束光束，得到两路成像光，以不同的角度向所述扩散屏输出所述两路成像光包括：所述空间光调制器用于调制所述2×K束光束，得到2×K路成像光，以不同的角度向所述扩散屏输出所述2×K路成像光。The spatial light modulator is used to modulate the two beams according to different image information to obtain two paths of imaging light, and output the two paths of imaging light to the diffusion screen at different angles, including: the spatial light modulator is used to The 2×K beams are modulated to obtain 2×K imaging lights, and the 2×K imaging lights are output to the diffusion screen at different angles.
  17. 根据权利要求16所述的立体投影***，其特征在于，所述K个背光组件中的每个背光组件在移动过程中的移动方向相同。The stereoscopic projection system according to claim 16, wherein each of the K backlight assemblies moves in the same direction during movement.
  18. 一种投影***，其特征在于，包括曲面镜和前述权利要求1至17中任意一项所述的立体投影***；A projection system, characterized by comprising a curved mirror and the stereoscopic projection system according to any one of the preceding claims 1 to 17;
    所述立体投影***用于输出两路成像光；The stereoscopic projection system is used to output two channels of imaging light;
    所述曲面镜用于反射扩散后的所述两路成像光，反射后的所述两路成像光之间存在夹角，所述曲面镜的焦距为f，所述扩散屏与所述曲面镜的距离为d，所述d小于所述f。The curved mirror is used to reflect the two channels of imaging light after diffusion. There is an included angle between the two channels of imaging light after reflection. The focal length of the curved mirror is f. The diffusion screen and the curved mirror The distance is d, and the d is smaller than the f.
  19. 一种交通工具，其特征在于，包括如权利要求1至17中任一项所述的立体投影***或权利要求18所述的投影***，所述立体投影***或所述投影***安装在所述交通工具上。 A vehicle, characterized by comprising a stereoscopic projection system as claimed in any one of claims 1 to 17 or a projection system as claimed in claim 18, said stereoscopic projection system or said projection system being installed on said on transportation.
PCT/CN2023/077024 2022-07-27 2023-02-18 3d projection system, projection system, and vehicle WO2024021574A1 (en)

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