WO2022028511A1 - Light source apparatus and projection device - Google Patents

Light source apparatus and projection device Download PDF

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Publication number
WO2022028511A1
WO2022028511A1 PCT/CN2021/110776 CN2021110776W WO2022028511A1 WO 2022028511 A1 WO2022028511 A1 WO 2022028511A1 CN 2021110776 W CN2021110776 W CN 2021110776W WO 2022028511 A1 WO2022028511 A1 WO 2022028511A1
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WO
WIPO (PCT)
Prior art keywords
light
light source
wavelength conversion
source module
area
Prior art date
Application number
PCT/CN2021/110776
Other languages
French (fr)
Chinese (zh)
Inventor
李士杰
唐晓峰
王霖
李屹
Original Assignee
深圳光峰科技股份有限公司
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Application filed by 深圳光峰科技股份有限公司 filed Critical 深圳光峰科技股份有限公司
Publication of WO2022028511A1 publication Critical patent/WO2022028511A1/en

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    • 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
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2046—Positional adjustment of light sources
    • 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
    • G03B21/208—Homogenising, shaping of the illumination light
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators

Definitions

  • the present application relates to the technical field of projection display, and in particular, to a light source device and projection equipment.
  • High dynamic range (High Dynamic Range, HDR) technology can improve the contrast between light and dark in a frame and is applied to projection display.
  • Projection displays usually use linear array lamp beads for backlighting to achieve local dimming. Local dimming can keep bright parts of the display screen bright and darken the rest, effectively improving the contrast between bright and dark.
  • the number of lamp beads in the linear array lamp beads is large, resulting in a larger volume and higher cost of the linear array lamp beads.
  • the embodiments of the present application propose a light source device and a projection device to solve the above-mentioned technical problem of large volume caused by setting an excessive number of lamp beads for realizing local dimming.
  • an embodiment of the present application provides a light source device, the light source device includes a light source module and a wavelength conversion device, the light source module includes a plurality of light-emitting units arranged at intervals in a strip-like structure, and each light-emitting unit can independently emit light beams.
  • the wavelength conversion device includes a wavelength conversion area and a non-wavelength conversion area. The wavelength conversion area is used to convert the light beam emitted by the light-emitting unit into a received laser light.
  • the light source module rotates so that the light beams emitted by the light emitting unit are irradiated to different positions of the wavelength conversion area or the non-wavelength conversion area.
  • a plurality of light-emitting units are distributed at radial intervals along the rotation track of the light source module.
  • the total number of wavelength conversion regions and non-wavelength conversion regions is M
  • the rotation frequency of the light source module is nM times the rotation frequency of the wavelength conversion device, where n is a positive integer.
  • the light source device further includes a collimating lens group, the collimating lens group is located on the outgoing light path of the wavelength conversion device, and the light emitted through the wavelength conversion device is collimated by the collimating lens group and then exits.
  • the collimating lens group and the wavelength conversion device are arranged at intervals, and the collimating lens group and the light source module rotate synchronously.
  • the collimating lens group is attached to the light emitting surface of the wavelength conversion device facing away from the light source module.
  • the light source device further includes a light homogenizing component, the light homogenizing component is located in the exit light path of the collimating lens group, and the light emitted through the collimating lens group is then homogenized by the light homogenizing component and then exits.
  • the light source module includes a connected base plate and a rotating shaft
  • the base plate is in the shape of a strip
  • the light emitting unit is fixed to the base plate along the lengthwise extending direction of the base plate
  • the rotating shaft is fixed to the end of the base plate
  • the rotation of the rotating shaft drives the base plate rotate.
  • the light source module includes a connected base plate and a rotating shaft, the base plate is disc-shaped, the light emitting unit is fixed to the base plate along the radial direction of the base plate, and the rotating shaft is fixed at the center position of the base plate and drives the base plate to rotate.
  • an embodiment of the present application further provides a projection device, where the projection device includes a spatial light modulator and the light source device of any one of the foregoing embodiments.
  • the spatial light modulator includes a light incident surface, and the light source module rotates so that the light emitting units are in different positions relative to the light incident surface, and at least a part of the light emitted by the light emitting units is incident on the light incident surface.
  • the light source module is selectively rotated to be in the first state or the second state, all light-emitting units of the light source module in the first state are located in the first area, and the light source module in the second state is in the first state. Some of the light emitting units are located in the first area and another part of the light emitting units are located in the second area.
  • the light source device further includes a processor, the processor controls the light emitting unit located in the first area to emit light according to the image signal, and the processor also controls the light emitting unit located in the second area to turn off according to the image signal.
  • the processor controlling the light-emitting units located in the first area to emit light according to the image signal includes at least one of the following manners: the processor controls the brightness of the light-emitting units located in the first area at different timings according to the image signal; The image signal controls the brightness of the light emitting units located at different positions of the first area.
  • the light source module includes a plurality of light-emitting units arranged at intervals in a strip-like structure
  • the wavelength conversion device includes a wavelength conversion area and a non-wavelength conversion area
  • the wavelength conversion area is used to convert the light-emitting units.
  • the outgoing light beam is converted into laser light, and the wavelength conversion region and the non-wavelength conversion region enter the light source module’s light beam outgoing path in sequence.
  • each light-emitting unit can emit light beams independently, and then by individually controlling the intensity of the light beams emitted by each light-emitting unit, the local dimming effect of the light source device can be realized, which effectively reduces the amount of light emitted compared to the linear array lamp beads.
  • the number of units is reduced, thereby helping to reduce the cost of the light source module and promoting the miniaturization of the light source module.
  • FIG. 1 is a schematic structural diagram of a light source device and a spatial light modulator provided by an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a light source module of the light source device of FIG. 1 .
  • FIG 3 is a schematic diagram of a light source module of a light source device provided in an embodiment of the present application cooperating with a light incident surface of a spatial light modulator.
  • FIG. 4 is a schematic diagram of a light source module of a light source device provided in another embodiment of the present application in cooperation with a light incident surface of a spatial light modulator.
  • FIG. 5 is a schematic diagram of the light source module of the light source device of FIG. 4 rotated to another position relative to the light incident surface of the spatial light modulator.
  • FIG. 6 is a schematic diagram of a module of a light source device provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a light spot of one of the light emitting units on the light incident surface of the spatial light modulator irradiated by light emitted from the light source device provided in the embodiment of the present application.
  • FIG. 8 is a schematic diagram illustrating that light emitted by a light source module of a light source device provided by an embodiment of the present application is formed on a light incident surface of a spatial light modulator.
  • FIG. 9 is a schematic diagram illustrating that light emitted by a light source module of a light source device according to another embodiment of the present application is formed on a light incident surface of a spatial light modulator.
  • FIG. 10 is a schematic diagram of a light source module of a light source device according to another embodiment of the present application cooperating with a light incident surface of a spatial light modulator.
  • FIG. 11 is a schematic structural diagram of a light source device provided by another embodiment of the present application.
  • FIG. 12 is a schematic diagram of a light source module and a wavelength conversion device of a light source device provided in an embodiment of the present application rotating in the same direction.
  • FIG. 13 is a schematic diagram of reverse rotation of a light source module and a wavelength conversion device of a light source device according to another embodiment of the present application.
  • FIG. 14 is a schematic structural diagram of a light source device provided by another embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a projection apparatus provided by an embodiment of the present application.
  • an embodiment of the present application provides a light source device 200 .
  • the light source device 200 is adapted to cooperate with the spatial light modulator 220 .
  • the spatial light modulator 220 may be any of a liquid crystal display (Liquid Crystal Display, LCD) device, a liquid crystal on silicon (Liquid Crystal on Silicon, LCOS) device, a digital micromirror device (Digital Micromirror Device, DMD) and other devices. .
  • the spatial light modulator 220 may be an LCD device or a DMD device; in a scenario where the light source device 200 is applied to the projection device 1000, the spatial light modulator 220
  • the device 220 may be an LCD device or an LCOS device or a DMD device.
  • the spatial light modulator 220 includes a light incident surface 222 , and the spatial light modulator 220 receives the light emitted by the light source device 200 through the light incident surface 222 , modulates the light, and outputs the light to the outside of the spatial light modulator 220 through the exit surface.
  • the exit surface and the light entrance surface 222 may be the same surface.
  • the size of the light incident surface 222 can be adapted to a projection image with a ratio of 16:9 or a projection image with a ratio of 4:3.
  • the light source device 200 includes a light source module 240 and a wavelength conversion device 280 .
  • the light source module 240 is used for emitting light
  • the wavelength conversion device 280 is located in the outgoing light path of the light source module 240
  • the spatial light modulator 220 is used for receiving the light beam emitted by the wavelength conversion device 280 .
  • the light source module 240 is adapted to face the light incident surface 222 of the spatial light modulator 220 .
  • the light source module 240 includes a plurality of light-emitting units 242 arranged at intervals and arranged in a strip-like structure, and each light-emitting unit 242 emits light independently, that is, each light-emitting unit 242 can be individually turned on, off, and adjusted luminous intensity. etc.
  • the strip-shaped structure is not limited to the linear strip-shaped structure, and the strip-shaped structure with an arc is also applicable.
  • a plurality of light-emitting units 242 are arranged in an arc-shaped light-emitting strip.
  • the light emitting unit 242 may be a laser diode (Laser Diode) or a light emitting diode (Light Emitting Diode).
  • the light emitted by the light emitting unit 242 may be blue light, purple light, red light, green light, ultraviolet light or other types of light, which are not listed here.
  • the light source module 240 may also include a connected base plate 246 and a rotating shaft 248 .
  • the base plate 246 may be substantially strip-shaped
  • the light emitting unit 242 may be fixed to the base plate 246 along the lengthwise extending direction of the base plate 246
  • the rotating shaft 248 may be fixed to the base plate 246
  • the rotation of the rotating shaft 248 can drive the base plate 246 to rotate, so as to realize the rotation of the light-emitting unit 242 .
  • the substrate 246 can be substantially disc-shaped
  • the light emitting unit 242 can be fixed to the substrate 246 along the radial direction of the substrate 246
  • the rotating shaft 248 can be fixed to the center of the substrate 246 to drive the substrate 246 to rotate.
  • the light source module 240 can rotate relative to the spatial light modulator 220 , for example, the rotation axis of the light source module 240 can be perpendicular to the light incident surface 222 of the spatial light modulator 220 .
  • the light source module 240 and the spatial light modulator 220 can realize light propagation through deflecting elements.
  • the rotation axis of the light source module 240 does not need to be perpendicular to the light incident surface 222 of the spatial light modulator 220. It is helpful for the light source module 240 and the spatial light modulator 220 to be reasonably arranged according to the actual situation to shorten the distance between them, thereby promoting the miniaturization of the light source device.
  • the rotation track 244 formed by the light source module 240 during the rotation process can be circular, and the diameter of the rotation track 244 is greater than or equal to the size of the diagonal of the light incident surface 222, so that the rotation track 244 can cover the light incidence surface 222, as shown in the figure 3 or FIG. 4 , the light source module 240 can be rotated by an integer multiple of turns within a frame time to achieve the effect that the emitted light can be irradiated to various positions in the light incident surface 222 .
  • the number of the light emitting units 242 of the light source module 240 can be reduced as much as possible.
  • the light-emitting units 242 of the light source module 240 may be distributed at radial intervals along the rotation track 244 of the light source module 240 , and the rotation center of the light source module 240 may correspond to the center of the light incident surface 222 .
  • the light source module 240 effectively reduces the number of the light emitting units 242 , thereby helping to reduce the cost of the light source module 240 and promoting the miniaturization of the light source module 240 .
  • the light source module 240 rotates so that the light emitting units 242 are in different positions relative to the light incident surface 222. During the rotation process of the light source module 240, at least a part of the light emitted by the light emitting units 242 can be irradiated to the light incident surface 222 at each time sequence, such as a light source.
  • the module 240 is selectively in the first state or the second state by rotating; as shown in FIG. 4 , all the light-emitting units 242 of the light source module 240 in the first state are located in the first area, and the light-emitting units located in the first area
  • the light emitted by 242 is irradiated to the light incident surface 222; as shown in FIG.
  • a part of the light emitting units 242 of the light source module 240 in the second state is located in the first area and another part of the light emitting units 242 is located in the second area, located in the first area
  • the light emitted by the light emitting unit 242 in the first region is irradiated to the light incident surface 222 and the light emitted by the light emitting unit 242 located in the second region is not irradiated to the light incident surface 222 .
  • each light-emitting unit 242 emits light independently, and by individually controlling the light-emitting intensity of each light-emitting unit 242 irradiating the light-incident surface 222, the local dimming effect of the light source device 200 can be realized, which is compared with the linear type.
  • the array lamp beads effectively reduce the number of light-emitting units 242 , thereby helping to reduce the cost of the light source module 200 and promoting the miniaturization of the light source module 200 .
  • the light emitting unit 242 in the second area can also be controlled to be turned off to save power.
  • the wavelength conversion device 280 is located in the outgoing light path of the light source module 240 , and the light emitted by the light source module 240 is emitted through the wavelength conversion device 280 .
  • the wavelength conversion device 280 includes a wavelength conversion area 281 and a non-wavelength conversion area 283.
  • the wavelength conversion area 281 is used to convert the light beam emitted by the light emitting unit 242 into received laser light
  • the non-wavelength conversion area 283 is used to scatter the light beam emitted by the light emitting unit 242. and/or transmission.
  • the wavelength conversion region 281 and the non-wavelength conversion region 283 enter into the light beam exit path of the light source module 240 in sequence.
  • the light source module 240 rotates so that the light beams emitted by the light-emitting units 242 are irradiated to different positions of the wavelength conversion area 281 or the non-wavelength conversion area 283. Since each light-emitting unit 242 can emit light beams independently, each light-emitting unit can be independently controlled by controlling each light-emitting unit. The intensity of the outgoing light beam 242 can achieve the local dimming effect of the light source device 200, effectively reducing the number of light-emitting units 242 compared with the linear array lamp beads, thereby helping to reduce the cost of the light source module 240 and promoting the light source module. 240 miniaturization.
  • the total number of wavelength conversion regions 281 and non-wavelength conversion regions 283 is M, and the wavelength conversion device 280 includes at least one wavelength conversion region 281 and at least one non-wavelength conversion region 283 , and M is a positive integer greater than or equal to 2.
  • the wavelength conversion region 281 and the non-wavelength conversion region 283 are collectively referred to as subregions of the wavelength conversion device 280 .
  • M is 3
  • the wavelength conversion device 280 includes 3 partitions, the 3 partitions are distributed in a ring shape, the area of each partition can be equal, and the area of each partition is greater than or equal to the area formed by the light source module 240 The area of the rotation track 244 .
  • the wavelength conversion device 280 may be a transmissive wavelength conversion device.
  • the wavelength conversion device 280 is provided with a wavelength conversion material layer. If the light emitted by the light emitting unit 242 is called excitation light, the wavelength conversion material layer can at least partially convert the excitation light into received laser light.
  • the excitation light and the received laser light are relative concepts, and the excitation light refers to light that can excite the wavelength conversion material layer so that the wavelength conversion material generates light of different wavelengths.
  • Excited light refers to light generated by excitation of the wavelength conversion material layer by excitation light. For example, the blue light excites the yellow light conversion material layer to generate yellow light, and at this time, the blue light is the excitation light, and the yellow light is the excited light.
  • the yellow light excites the red conversion material layer to generate red light. At this time, the yellow light is the excitation light, and the red light is the received laser light.
  • the blue light excites the green light conversion material layer to generate green light. At this time, the blue light is the excitation light, and the green light is the received laser light.
  • the wavelength conversion material layer can be arranged in 2 of the partitions.
  • the light-emitting unit 242 includes a blue semiconductor laser diode, and the light-emitting unit 242 emits blue laser light, then one of the two sub-regions of the wavelength conversion device 280 is provided with a yellow light conversion material layer and the other sub-region is provided with a green light conversion material layer
  • the light conversion material layer so that the light source module 240 and the wavelength conversion material of the wavelength conversion device 280 can cooperate to realize red and green spectrum.
  • the wavelength conversion material layer may include phosphorescent materials, such as phosphors, nanomaterials, such as quantum dots, and fluorescent materials, which are not listed here.
  • the wavelength conversion material layer includes a fluorescent material, and the excited laser light emitted from the wavelength conversion material layer is fluorescent light. Since the fluorescent light is incoherent light, there is no influence of speckle, and green fluorescent light is generated by exciting the fluorescent material with blue light. and red fluorescence, which can avoid the speckle problem of human vision caused by the coherence of the light emitted by the light source module 240 .
  • the rotation frequency of the light source module 240 can be nM times the rotation frequency of the wavelength conversion device 280, wherein n is a positive integer, In this way, every time the wavelength conversion device 280 rotates 360/M degrees, the light source module 240 rotates n circles, which helps the light source module 240 to pass the light emitted by the light emitting unit 242 through corresponding partitions according to the type of light required by the image signal.
  • M is 3
  • the rotation frequency of the light source module 240 may be 3 times, 6 times, or 9 times the rotation frequency of the wavelength conversion device 280, and so on.
  • the rotation direction of the wavelength conversion device 280 and the rotation direction of the light source module 240 may be the same or opposite. Under the condition that the rotation frequency and rotation direction of the wavelength conversion device 280 and the light source module 240 remain unchanged, the scanning trajectory of the light emitted by each light emitting unit 242 of the light source module 240 to each sub-area of the wavelength conversion device 280 remains unchanged.
  • the light emitted by the light emitting unit 242 of the light source module 240 is irradiated to the scanning track 284 of the wavelength conversion device 280 as shown in the figure. 6, the scanning trajectories 284 of the three partitions of the wavelength conversion device 280 are the same.
  • the rotation frequencies of the wavelength conversion device 280 and the light source module 240 remain unchanged
  • the rotation direction D1 of the wavelength conversion device 280 and the rotation direction D2 of the light source module 240 can be opposite, and the light emitted by the light emitting unit 242 of the light source module 240 is irradiated to
  • the scanning trajectories 286 of the wavelength conversion device 280 are shown in FIG. 7 , and the scanning trajectories 286 of the three partitions of the wavelength conversion device 280 are the same.
  • the scanning track 286 formed in the sub-region when the rotation directions of the wavelength conversion device 280 and the light source module 240 are opposite is different from the scanning track 284 formed in the sub-region when the rotation direction of the wavelength conversion device 280 and the light source module 240 are the same, neither of them If the light output effect of the light source device 100 is affected, it is helpful for the light source device 200 to set the rotation direction of the wavelength conversion device 280 to be the same or different from the rotation direction of the light source module 240 according to the actual situation, thereby improving the availability of the light source device 100. operability.
  • the light source device 200 may further include a processor 260 , and the processor 260 may be electrically connected to the light source module 240 .
  • the processor 260 has built-in various functional modules, and different functional modules cooperate with each other and jointly realize the work of the light source device 200 .
  • the processor 260 can be made into an independent device, equipment, etc., and transmits signals with the light source module 240 in a wired manner.
  • the processor 260 may also be integrated with the light source module 240 .
  • the processor 260 controls the light emitting unit 242 of the light source module 240 to emit light based on the image signal.
  • the processor 260 can control the light emitting unit 242 located in the first area to emit light according to the image signal, and the processor 260 controls the light emitting unit 242 located in the first area to emit light.
  • the processor 260 can control the brightness of the light-emitting units 242 located in the first area at different timings according to the image signal; or, the processor 260 can control the light-emitting units 242 located at different positions in the first area according to the image signal. brightness.
  • the processor 260 can also control the light emitting unit 242 located in the second area to turn off according to the image signal.
  • the image signal may be image information of the image to be projected, and the processor 260 can determine the corresponding light-emitting unit 242 in the light source module 240 according to the image signal, and adjust the light-emitting unit 242, for example, the light-emitting unit 242 can be turned on , extinguish, increase or decrease the luminous intensity, etc.
  • a light spot irradiated by a light emitting unit 242 of the light source module 240 to the light incident surface 222 is shown.
  • the length of the light spot is L and the width is H.
  • the four vertices of the light spot correspond to the rotation radii respectively are r1, r2, r3, and r4, and the linear velocities corresponding to the four vertices of the light spot are v1, v2, v3, and v4.
  • the processor 260 can determine the light-emitting unit 242 in the light source module 240 corresponding to the light spot according to the above parameters of the light spot, so as to To control the light-emitting unit 242, for example, the light-emitting unit 242 can be turned on, turned off, enhanced or weakened, and the like.
  • the processor 260 can control at least a part of the light emitting units 242 of the light source module 240 to emit light to the light incident surface 222 according to the image signal, so as to provide the required light for the specific position 224 of the light incident surface 222 of the spatial light modulator 220, As shown in Figure 10.
  • the processor 260 can adjust the time that the light irradiated on the light incident surface 222 stays on the light incident surface 222 by controlling the rotation frequency of the light source module 240 to realize the brightness of the light emitting units 242 located at different positions in the first area or the first light emitting unit 242.
  • the light emitting unit 242 in a specific position 224 of the light incident surface 222 , can realize a gradual change in the illuminance of the light along the rotation direction, which can only realize a step-like change in the illuminance of the light of the linear array lamp beads. , the effect of the light source module 240 providing light for the spatial light modulator 220 is added.
  • the processor 260 can also control another part of the light emitting unit 242 of the light source module 240 that is not irradiated to the light incident surface 222 to turn off according to the image signal. As shown in FIG. 12 , since the light not irradiated to the light incident surface 222 will not pass through the space light The modulator 220 modulates, and by turning off the other part of the light-emitting units 242, the power consumption of the light source device 200 can be reduced to achieve the effect of saving power.
  • the light source device 200 may further include a collimating lens group 210 .
  • the collimating lens group 210 is located in the outgoing light path of the wavelength conversion device 280 , and the light emitted by the wavelength conversion device 280 is collimated by the collimating lens group 210 . out.
  • the collimating lens group 210 and the wavelength conversion device 280 are arranged at intervals, and the collimating lens group 210 and the light source module 240 rotate synchronously.
  • the shape and structure of the collimating lens group 210 and the light source module 240 may be similar.
  • the collimating lens group 210 is a rotating lens group, and the rotation axis of the collimating lens group 210 coincides with the rotation axis of the light source module 240 .
  • the collimating lens group 210 includes a plurality of collimating lenses, and the plurality of collimating lenses are distributed along the radial interval of the rotation track of the collimating lens group 210.
  • the light emitted by the corresponding light-emitting unit 242 is used for collimating the light emitted by the corresponding light-emitting unit 242. Since there is no need to set an excessive number of collimating lenses in the collimating lens group 210 to cover the entire wavelength conversion device 280, the light emitted by the light-emitting unit 242 can still be collimated. It is helpful to simplify the structure of the collimating lens group 210 and reduce the cost of the collimating lens group 210 .
  • the collimating lens group 210 is attached to the light-emitting surface of the wavelength conversion device 280 away from the light source module 240 , and the collimating lenses in the collimating lens group 210 can pass through the optical
  • the glue is glued to each subsection of the transmissive wavelength conversion device.
  • the collimating lens can be glued to the position corresponding to the scanning track in the subsection. Since the gap between the collimating lens group 210 and the wavelength conversion device 280 is reduced, the The distance between the straight lens group 210 and the wavelength conversion device 280 is more compact, which helps to promote the miniaturization of the light source device 200 .
  • the light source device 200 may further include a light homogenizing component 230.
  • the light homogenizing component 230 is located in the exit light path of the collimating lens group 210, and the light exiting through the collimating lens group 210 is then homogenized by the light homogenizing component 230 before exiting.
  • the light homogenizing component 230 may include a diffusing film 232 and a microlens array module 234, so that the light emitted by the light emitting unit 242 is homogenized by the diffusing film 232 and then passed through the microlens array module 234 to splicing uniform illuminance, as shown in FIG. 14 , Since the microlens array module 234 includes a plurality of microlenses 235, the light can be well aggregated, which is helpful for uniform illumination of the light on the light incident surface 222 of the spatial light modulator 220.
  • the light source device 200 may further include a prism group 250, and the prism group 250 may be disposed between the light source module 240 and the spatial light modulator 220 to adjust the propagation path of light.
  • the prism group 250 may include a plurality of lenses.
  • the prism group 250 includes two triangular prisms, and the two triangular prisms cooperate with each other to form an approximate square structure.
  • the prism group 250 is located in the outgoing light path of the light source module 240 , and the prism group 250 guides the light emitted by the light source module 240 to the spatial light modulator 220 , which is helpful for the relative relationship between the spatial light modulator 220 and the light source module 240 .
  • the arrangement of the positions is relatively compact, which promotes the miniaturization of the light source device 200 .
  • an embodiment of the present application further provides a projection device 1000, which may be a cinema projector, an engineering projector, a pico projector, an educational projector, a wall projector, a laser TV, and the like.
  • a projection device 1000 which may be a cinema projector, an engineering projector, a pico projector, an educational projector, a wall projector, a laser TV, and the like.
  • the projection apparatus 1000 includes a spatial light modulator 220 and the light source device 200 of any of the above embodiments.
  • the spatial light modulator 220 includes a light incident surface 222, and the light source module 240 rotates to make the light emitting unit 242 in a different position relative to the light incident surface 220. , and at least a part of the light emitted by the light emitting units 242 is incident on the light incident surface 222 .
  • the projection lens 400 may further include a projection lens 400, and the projection lens 400 receives the light emitted by the light source device 200 and projects and emits it.
  • the light emitting unit 242 of the light source module 240 emits light, and the light can be irradiated to the spatial light modulator 220 through the wavelength conversion device 280, the collimating lens group 210, the diffusion film 232, the microlens array module 234 and the prism group 250 in sequence, and The light is modulated by the spatial light modulator 220 and then projected to the outside of the projection device 1000 through the prism group 250 and the projection lens 400 .
  • the light source module 240 is provided with a plurality of light-emitting units 242 arranged in a strip-like structure at intervals, and the wavelength conversion device 280 includes a wavelength conversion area 281 and a non-wavelength conversion area 283.
  • the wavelength conversion area 281 uses In order to convert the light beam emitted by the light emitting unit 242 into laser light, the wavelength conversion region 281 and the non-wavelength conversion region 283 enter the light beam output path of the light source module 240 in sequence, and the light source module 240 rotates to make the light emitting unit 242 emit light.
  • the light beams are irradiated to different positions of the wavelength conversion area 281 or the non-wavelength conversion area 283.
  • each light-emitting unit 242 can independently emit light beams, and then by individually controlling the intensity of the light beams emitted by each light-emitting unit 242, local adjustment of the light source device 200 can be realized. Compared with the linear array lamp beads, the number of light-emitting units 242 is effectively reduced, thereby helping to reduce the cost of the light source module 240 and promoting the miniaturization of the light source module 240 .
  • the terms “installed”, “connected”, “fixed” and the like should be construed in a broad sense unless otherwise expressly specified or limited.
  • it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components.
  • Communication can also be only surface contact, or a surface contact connection through an intermediate medium.

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

A light source apparatus (200), comprising a light source module (240) and a wavelength conversion apparatus (280), wherein the light source module (240) comprises several light-emitting units (242) arranged at intervals in a strip-shaped structure, and each light-emitting unit (242) may independently emit a light beam. The wavelength conversion apparatus (280) comprises wavelength conversion regions (281) and a non-wavelength conversion region (283). The wavelength conversion regions (281) are used to convert the light beams emitted by the light-emitting units (242) into excited light. The wavelength conversion regions (281) and the non-wavelength conversion region (283) enter emitting paths of the light beams of the light source module (240) in time sequence. The light source module (240) rotates and moves so as to make the light beams emitted by the light-emitting units (242) irradiate to different positions of the wavelength conversion regions (281) or the non-wavelength conversion region (283), and then by means of separately controlling the intensity of the emitted beams of each light-emitting unit (242), the local dimming effect of the light source apparatus (200) may be achieved, which effectively reduces the number of light-emitting units (242) compared to linearly arrayed lamp beads. Further provided is a projection device (1000).

Description

光源装置和投影设备Light source units and projection equipment 技术领域technical field
本申请涉及投影显示技术领域，具体而言，涉及一种光源装置和投影设备。The present application relates to the technical field of projection display, and in particular, to a light source device and projection equipment.
背景技术Background technique
高动态范围(High Dynamic Range，HDR)技术可以提高一帧画面中的亮暗对比度而被应用于投影显示中。投影显示通常使用直线式阵列灯珠进行背光来实现局部调光(Local Dimming)，局部调光可以使显示画面的明亮部分保持明亮且其余部分变暗，有效地提高了亮暗对比度。然而，直线式阵列灯珠中灯珠的数量较多，导致直线式阵列灯珠的体积较大、成本较高。High dynamic range (High Dynamic Range, HDR) technology can improve the contrast between light and dark in a frame and is applied to projection display. Projection displays usually use linear array lamp beads for backlighting to achieve local dimming. Local dimming can keep bright parts of the display screen bright and darken the rest, effectively improving the contrast between bright and dark. However, the number of lamp beads in the linear array lamp beads is large, resulting in a larger volume and higher cost of the linear array lamp beads.
发明内容SUMMARY OF THE INVENTION
本申请实施方式提出了一种光源装置和投影设备，以解决上述为实现局部调光而设置过多数量的灯珠继而导致体积大的技术问题。The embodiments of the present application propose a light source device and a projection device to solve the above-mentioned technical problem of large volume caused by setting an excessive number of lamp beads for realizing local dimming.
本申请实施方式通过以下技术方案来实现上述目的。The embodiments of the present application achieve the above objects through the following technical solutions.
第一方面，本申请实施方式提供一种光源装置，光源装置包括光源模组和波长转换装置，光源模组包括间隔设置排列成条状结构的若干发光单元，每个发光单元可独立出射光束。波长转换装置包括波长转换区域和非波长转换区域，波长转换区域用于将发光单元出射的光束转换为受激光，波长转换区域和非波长转换区域时序进入光源模组的光束的出射路径上。光源模组做旋转运动以使发光单元出射的光束照射到波长转换区域或者非波长转换区域的不同位置。In a first aspect, an embodiment of the present application provides a light source device, the light source device includes a light source module and a wavelength conversion device, the light source module includes a plurality of light-emitting units arranged at intervals in a strip-like structure, and each light-emitting unit can independently emit light beams. The wavelength conversion device includes a wavelength conversion area and a non-wavelength conversion area. The wavelength conversion area is used to convert the light beam emitted by the light-emitting unit into a received laser light. The light source module rotates so that the light beams emitted by the light emitting unit are irradiated to different positions of the wavelength conversion area or the non-wavelength conversion area.
在一些实施方式中，若干发光单元沿光源模组的旋转轨迹的径向间隔分布。In some embodiments, a plurality of light-emitting units are distributed at radial intervals along the rotation track of the light source module.
在一些实施方式中，波长转换区域和非波长转换区域的总数量为M，光源模组的旋转频率为波长转换装置的旋转频率的nM倍，其中n为正整数。In some embodiments, the total number of wavelength conversion regions and non-wavelength conversion regions is M, and the rotation frequency of the light source module is nM times the rotation frequency of the wavelength conversion device, where n is a positive integer.
在一些实施方式中，光源装置还包括准直透镜组，准直透镜组位于波长转换装置的出射光路上，经过波长转换装置出射的光再经过准直透镜组准直后出射。In some embodiments, the light source device further includes a collimating lens group, the collimating lens group is located on the outgoing light path of the wavelength conversion device, and the light emitted through the wavelength conversion device is collimated by the collimating lens group and then exits.
在一些实施方式中，准直透镜组和波长转换装置间隔设置，准直透镜组与光源模组同步转动。In some embodiments, the collimating lens group and the wavelength conversion device are arranged at intervals, and the collimating lens group and the light source module rotate synchronously.
在一些实施方式中，准直透镜组贴附于波长转换装置的背离光源模组的出光面。In some embodiments, the collimating lens group is attached to the light emitting surface of the wavelength conversion device facing away from the light source module.
在一些实施方式中，光源装置还包括均光组件，均光组件位于准直透镜组的出射光路，经过准直透镜组出射的光再经过均光组件均光后出射。In some embodiments, the light source device further includes a light homogenizing component, the light homogenizing component is located in the exit light path of the collimating lens group, and the light emitted through the collimating lens group is then homogenized by the light homogenizing component and then exits.
在一些实施方式中，光源模组包括相连接的基板和旋转轴，基板呈条状，发光单元沿基板的长度延伸方向固定于基板，旋转轴固定于基板的端部，旋转轴的转动带动基板旋转。In some embodiments, the light source module includes a connected base plate and a rotating shaft, the base plate is in the shape of a strip, the light emitting unit is fixed to the base plate along the lengthwise extending direction of the base plate, the rotating shaft is fixed to the end of the base plate, and the rotation of the rotating shaft drives the base plate rotate.
在一些实施方式中，光源模组包括相连接的基板和旋转轴，基板呈圆盘状，发光单元沿基板的径向固定于基板，旋转轴固定于基板的中心位置并带动基板旋转。In some embodiments, the light source module includes a connected base plate and a rotating shaft, the base plate is disc-shaped, the light emitting unit is fixed to the base plate along the radial direction of the base plate, and the rotating shaft is fixed at the center position of the base plate and drives the base plate to rotate.
第二方面，本申请实施方式还提供一种投影设备，投影设备包括空间光调制器以及上述任一实施方式的光源装置。空间光调制器包括入光面，光源模组通过旋转使发光单元相对入光面处于不同的位置，且使至少一部分发光单元发出的光入射至入光面。In a second aspect, an embodiment of the present application further provides a projection device, where the projection device includes a spatial light modulator and the light source device of any one of the foregoing embodiments. The spatial light modulator includes a light incident surface, and the light source module rotates so that the light emitting units are in different positions relative to the light incident surface, and at least a part of the light emitted by the light emitting units is incident on the light incident surface.
在一些实施方式中，光源模组通过旋转而选择性地处于第一状态或第二状态，处于第一状态的光源模组的全部发光单元位于第一区域，处于第二状态的光源模组的一部分发光单元位于第一区域且另一部分发光单元位于第二区域，位于第一区域的发光单元发出的光照射至入光面，位于第二区域的发 光单元发出的光未照射至入光面。光源装置还包括处理器，处理器根据图像信号控制位于第一区域的发光单元发光，处理器根据图像信号还控制位于第二区域的发光单元熄灭。In some embodiments, the light source module is selectively rotated to be in the first state or the second state, all light-emitting units of the light source module in the first state are located in the first area, and the light source module in the second state is in the first state. Some of the light emitting units are located in the first area and another part of the light emitting units are located in the second area. The light source device further includes a processor, the processor controls the light emitting unit located in the first area to emit light according to the image signal, and the processor also controls the light emitting unit located in the second area to turn off according to the image signal.
在一些实施方式中，处理器根据图像信号控制位于第一区域的发光单元发光包括以下至少一种方式：处理器根据图像信号控制位于第一区域的发光单元在不同时序下的亮度；处理器根据图像信号控制位于第一区域的不同位置的发光单元的亮度。In some embodiments, the processor controlling the light-emitting units located in the first area to emit light according to the image signal includes at least one of the following manners: the processor controls the brightness of the light-emitting units located in the first area at different timings according to the image signal; The image signal controls the brightness of the light emitting units located at different positions of the first area.
本申请实施方式提供的光源装置和投影设备中，光源模组包括间隔设置排列成条状结构的若干发光单元，波长转换装置包括波长转换区域和非波长转换区域，波长转换区域用于将发光单元出射的光束转换为受激光，波长转换区域和非波长转换区域时序进入光源模组的光束的出射路径上，光源模组做旋转运动以使发光单元出射的光束照射到波长转换区域或者非波长转换区域的不同位置，由于每个发光单元可独立出射光束，再通过单独控制每一个发光单元出射光束的强度，可以实现光源装置的局部调光效果，相较于直线式阵列灯珠有效减少了发光单元的数量，从而有助于降低光源模组的成本和促进光源模组的小型化。In the light source device and the projection device provided by the embodiments of the present application, the light source module includes a plurality of light-emitting units arranged at intervals in a strip-like structure, the wavelength conversion device includes a wavelength conversion area and a non-wavelength conversion area, and the wavelength conversion area is used to convert the light-emitting units. The outgoing light beam is converted into laser light, and the wavelength conversion region and the non-wavelength conversion region enter the light source module’s light beam outgoing path in sequence. In different positions of the area, since each light-emitting unit can emit light beams independently, and then by individually controlling the intensity of the light beams emitted by each light-emitting unit, the local dimming effect of the light source device can be realized, which effectively reduces the amount of light emitted compared to the linear array lamp beads. The number of units is reduced, thereby helping to reduce the cost of the light source module and promoting the miniaturization of the light source module.
附图说明Description of drawings
为了更清楚地说明本申请实施方式中的技术方案，下面将对实施方式描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施方式，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained from these drawings without creative effort.
图1是本申请实施方式提供的光源装置和空间光调制器的结构示意图。FIG. 1 is a schematic structural diagram of a light source device and a spatial light modulator provided by an embodiment of the present application.
图2是图1的光源装置的光源模组的结构示意图。FIG. 2 is a schematic structural diagram of a light source module of the light source device of FIG. 1 .
图3是本申请实施方式提供的光源装置的光源模组配合空间光调制器的入光面的示意图。3 is a schematic diagram of a light source module of a light source device provided in an embodiment of the present application cooperating with a light incident surface of a spatial light modulator.
图4是本申请另一实施方式提供的光源装置的光源模组配合空间光调制 器的入光面的示意图。4 is a schematic diagram of a light source module of a light source device provided in another embodiment of the present application in cooperation with a light incident surface of a spatial light modulator.
图5是图4的光源装置的光源模组旋转至另一相对空间光调制器的入光面的位置的示意图。FIG. 5 is a schematic diagram of the light source module of the light source device of FIG. 4 rotated to another position relative to the light incident surface of the spatial light modulator.
图6是本申请实施方式提供的光源装置的模块示意图。FIG. 6 is a schematic diagram of a module of a light source device provided by an embodiment of the present application.
图7是本申请实施方式提供的光源装置中发出的光照射至空间光调制器的入光面的其中一个发光单元的光斑的示意图。FIG. 7 is a schematic diagram of a light spot of one of the light emitting units on the light incident surface of the spatial light modulator irradiated by light emitted from the light source device provided in the embodiment of the present application.
图8是本申请实施方式提供的光源装置的光源模组发出的光形成于空间光调制器的入光面的示意图。8 is a schematic diagram illustrating that light emitted by a light source module of a light source device provided by an embodiment of the present application is formed on a light incident surface of a spatial light modulator.
图9是本申请另一实施方式提供的光源装置的光源模组发出的光形成于空间光调制器的入光面的示意图。9 is a schematic diagram illustrating that light emitted by a light source module of a light source device according to another embodiment of the present application is formed on a light incident surface of a spatial light modulator.
图10是本申请另一实施方式提供的光源装置的光源模组配合空间光调制器的入光面的示意图。10 is a schematic diagram of a light source module of a light source device according to another embodiment of the present application cooperating with a light incident surface of a spatial light modulator.
图11是本申请另一实施方式提供的光源装置的结构示意图。FIG. 11 is a schematic structural diagram of a light source device provided by another embodiment of the present application.
图12是本申请实施方式提供的光源装置的光源模组和波长转换装置同向转动的示意图。12 is a schematic diagram of a light source module and a wavelength conversion device of a light source device provided in an embodiment of the present application rotating in the same direction.
图13是本申请另一实施方式提供的光源装置的光源模组和波长转换装置反向转动的示意图。FIG. 13 is a schematic diagram of reverse rotation of a light source module and a wavelength conversion device of a light source device according to another embodiment of the present application.
图14是本申请又一实施方式提供的光源装置的结构示意图。FIG. 14 is a schematic structural diagram of a light source device provided by another embodiment of the present application.
图15是本申请实施方式提供的投影装置的结构示意图。FIG. 15 is a schematic structural diagram of a projection apparatus provided by an embodiment of the present application.
具体实施方式detailed description
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施方式中的附图，对本申请实施方式中的技术方案进行清楚、完整地描述。显然，所描述的实施方式仅仅是本申请一部分实施方式，而不是全部的实施方式。基于本申请中的实施方式，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式，都属于本申请保护的范围。In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.
请参阅图1，本申请实施方式提供一种光源装置200，光源装置200适于 与空间光调制器220配合。Referring to FIG. 1 , an embodiment of the present application provides a light source device 200 . The light source device 200 is adapted to cooperate with the spatial light modulator 220 .
空间光调制器220可以为液晶显示(Liquid Crystal Display，LCD)器件、硅基液晶显示(Liquid Crystal on Silicon，LCOS)器件、数字微镜器件(Digital Micromirror Device，DMD)等器件中的任一种。例如在光源装置200应用于车载抬头显示(Head Up Display，HUD)的场景中，空间光调制器220可以为LCD器件或DMD器件；在光源装置200应用于投影设备1000的场景中，空间光调制器220可以为LCD器件或LCOS器件或DMD器件。The spatial light modulator 220 may be any of a liquid crystal display (Liquid Crystal Display, LCD) device, a liquid crystal on silicon (Liquid Crystal on Silicon, LCOS) device, a digital micromirror device (Digital Micromirror Device, DMD) and other devices. . For example, in a scenario where the light source device 200 is applied to a vehicle head-up display (Head Up Display, HUD), the spatial light modulator 220 may be an LCD device or a DMD device; in a scenario where the light source device 200 is applied to the projection device 1000, the spatial light modulator 220 The device 220 may be an LCD device or an LCOS device or a DMD device.
空间光调制器220包括入光面222，空间光调制器220通过入光面222接收光源装置200发出的光，并将光调制后经出射面出射至空间光调制器220外。出射面与入光面222可以为同一表面。入光面222的尺寸可以适应比例为16：9的投影画面，也可以适应比例为4：3的投影画面。The spatial light modulator 220 includes a light incident surface 222 , and the spatial light modulator 220 receives the light emitted by the light source device 200 through the light incident surface 222 , modulates the light, and outputs the light to the outside of the spatial light modulator 220 through the exit surface. The exit surface and the light entrance surface 222 may be the same surface. The size of the light incident surface 222 can be adapted to a projection image with a ratio of 16:9 or a projection image with a ratio of 4:3.
光源装置200包括光源模组240和波长转换装置280。光源模组240用于发出光，波长转换装置280位于光源模组240的出射光路，则空间光调制器220用于接收经波长转换装置280出射的光束。The light source device 200 includes a light source module 240 and a wavelength conversion device 280 . The light source module 240 is used for emitting light, the wavelength conversion device 280 is located in the outgoing light path of the light source module 240 , and the spatial light modulator 220 is used for receiving the light beam emitted by the wavelength conversion device 280 .
光源模组240适于朝向空间光调制器220的入光面222。请结合图2，光源模组240包括间隔设置排列成条状结构的若干发光单元242，每个发光单元242独立地发出光，即每个发光单元242可以单独进行点亮、熄灭、调整发光强度等等。该条状结构并不局限于直线型的条状结构，带有弧度的条状结构同样适用。例如，若干发光单元242排列成有弧度的条状发光带。发光单元242可以为激光二极管(Laser Diode)或者发光二极管(Light Emitting Diode)。发光单元242发出的光可以为蓝色光、紫色光、红色光、绿色光、紫外光或其他类型的光，在此不一一列举。The light source module 240 is adapted to face the light incident surface 222 of the spatial light modulator 220 . Please refer to FIG. 2 , the light source module 240 includes a plurality of light-emitting units 242 arranged at intervals and arranged in a strip-like structure, and each light-emitting unit 242 emits light independently, that is, each light-emitting unit 242 can be individually turned on, off, and adjusted luminous intensity. etc. The strip-shaped structure is not limited to the linear strip-shaped structure, and the strip-shaped structure with an arc is also applicable. For example, a plurality of light-emitting units 242 are arranged in an arc-shaped light-emitting strip. The light emitting unit 242 may be a laser diode (Laser Diode) or a light emitting diode (Light Emitting Diode). The light emitted by the light emitting unit 242 may be blue light, purple light, red light, green light, ultraviolet light or other types of light, which are not listed here.
光源模组240还可以包括相连接的基板246和旋转轴248，例如基板246可以大体呈条状，发光单元242可以沿基板246的长度延伸方向固定于基板246，旋转轴248可以固定于基板246的端部，旋转轴248的转动可以带动基板246旋转，从而实现发光单元242的旋转。在其他实施方式中，基板246可以大体呈圆盘状，发光单元242可以沿基板246的径向固定于基板246， 旋转轴248可以固定于基板246的中心位置并带动基板246旋转。The light source module 240 may also include a connected base plate 246 and a rotating shaft 248 . For example, the base plate 246 may be substantially strip-shaped, the light emitting unit 242 may be fixed to the base plate 246 along the lengthwise extending direction of the base plate 246 , and the rotating shaft 248 may be fixed to the base plate 246 The rotation of the rotating shaft 248 can drive the base plate 246 to rotate, so as to realize the rotation of the light-emitting unit 242 . In other embodiments, the substrate 246 can be substantially disc-shaped, the light emitting unit 242 can be fixed to the substrate 246 along the radial direction of the substrate 246 , and the rotating shaft 248 can be fixed to the center of the substrate 246 to drive the substrate 246 to rotate.
光源模组240可以相对空间光调制器220进行旋转，例如光源模组240的旋转轴线可以垂直于空间光调制器220的入光面222。其他实施方式中，光源模组240与空间光调制器220可以通过偏折元件来实现光的传播，此时光源模组240的旋转轴线可以无需垂直于空间光调制器220的入光面222，有助于光源模组240与空间光调制器220可以根据实际情况合理排布位置以缩短两者之间的间距，促进光源装置的小型化。The light source module 240 can rotate relative to the spatial light modulator 220 , for example, the rotation axis of the light source module 240 can be perpendicular to the light incident surface 222 of the spatial light modulator 220 . In other embodiments, the light source module 240 and the spatial light modulator 220 can realize light propagation through deflecting elements. In this case, the rotation axis of the light source module 240 does not need to be perpendicular to the light incident surface 222 of the spatial light modulator 220. It is helpful for the light source module 240 and the spatial light modulator 220 to be reasonably arranged according to the actual situation to shorten the distance between them, thereby promoting the miniaturization of the light source device.
光源模组240在旋转过程形成的旋转轨迹244可以呈圆形，并且旋转轨迹244的直径大于或等于入光面222的对角线的尺寸，使得旋转轨迹244可以覆盖入光面222，如图3或图4所示，光源模组240可以在一帧时间内旋转整数倍的圈数以达到发出的光能够照射至入光面222内的各个位置的效果。The rotation track 244 formed by the light source module 240 during the rotation process can be circular, and the diameter of the rotation track 244 is greater than or equal to the size of the diagonal of the light incident surface 222, so that the rotation track 244 can cover the light incidence surface 222, as shown in the figure 3 or FIG. 4 , the light source module 240 can be rotated by an integer multiple of turns within a frame time to achieve the effect that the emitted light can be irradiated to various positions in the light incident surface 222 .
在保证光源模组240的旋转轨迹244覆盖入光面222的情况下，可以尽可能地减少光源模组240的发光单元242的数量。例如如图4所示，光源模组240的若干发光单元242可以沿光源模组240的旋转轨迹244的径向间隔分布，光源模组240的旋转中心可以与入光面222的中心对应，此时光源模组240有效减少了发光单元242的数量，从而有助于降低光源模组240的成本和促进光源模组240的小型化。Under the condition of ensuring that the rotation track 244 of the light source module 240 covers the light incident surface 222 , the number of the light emitting units 242 of the light source module 240 can be reduced as much as possible. For example, as shown in FIG. 4 , the light-emitting units 242 of the light source module 240 may be distributed at radial intervals along the rotation track 244 of the light source module 240 , and the rotation center of the light source module 240 may correspond to the center of the light incident surface 222 . The light source module 240 effectively reduces the number of the light emitting units 242 , thereby helping to reduce the cost of the light source module 240 and promoting the miniaturization of the light source module 240 .
光源模组240通过旋转使发光单元242相对入光面222处于不同的位置，光源模组240在旋转过程可以使每一时序至少存在一部分发光单元242发出的光照射至入光面222，例如光源模组240通过旋转而选择性地处于第一状态或第二状态；如图4所示，处于第一状态的光源模组240的全部发光单元242位于第一区域，位于第一区域的发光单元242发出的光照射至入光面222；如图5所示，处于第二状态的光源模组240的一部分发光单元242位于第一区域且另一部分发光单元242位于第二区域，位于第一区域的发光单元242发出的光照射至入光面222且位于第二区域的发光单元242发出的光未照射至入光面222。由于每个发光单元242独立地发出光，再通过单独控制每一个发出的光照射至入光面222的发光单元242的发光强度，可以实 现光源装置200的局部调光效果，相较于直线式阵列灯珠有效减少了发光单元242的数量，从而有助于降低光源模组200的成本和促进光源模组200的小型化。在实现局部调光效果的情况下，还可以控制处于第二区域的发光单元242熄灭以节省电量。The light source module 240 rotates so that the light emitting units 242 are in different positions relative to the light incident surface 222. During the rotation process of the light source module 240, at least a part of the light emitted by the light emitting units 242 can be irradiated to the light incident surface 222 at each time sequence, such as a light source. The module 240 is selectively in the first state or the second state by rotating; as shown in FIG. 4 , all the light-emitting units 242 of the light source module 240 in the first state are located in the first area, and the light-emitting units located in the first area The light emitted by 242 is irradiated to the light incident surface 222; as shown in FIG. 5, a part of the light emitting units 242 of the light source module 240 in the second state is located in the first area and another part of the light emitting units 242 is located in the second area, located in the first area The light emitted by the light emitting unit 242 in the first region is irradiated to the light incident surface 222 and the light emitted by the light emitting unit 242 located in the second region is not irradiated to the light incident surface 222 . Since each light-emitting unit 242 emits light independently, and by individually controlling the light-emitting intensity of each light-emitting unit 242 irradiating the light-incident surface 222, the local dimming effect of the light source device 200 can be realized, which is compared with the linear type. The array lamp beads effectively reduce the number of light-emitting units 242 , thereby helping to reduce the cost of the light source module 200 and promoting the miniaturization of the light source module 200 . In the case of realizing the local dimming effect, the light emitting unit 242 in the second area can also be controlled to be turned off to save power.
请参阅图1，波长转换装置280位于光源模组240的出射光路，光源模组240发出的光经过波长转换装置280出射。波长转换装置280包括波长转换区域281和非波长转换区域283，波长转换区域281用于将发光单元242出射的光束转换为受激光，非波长转换区域283用于将发光单元242出射的光束进行散射和/或透射。波长转换区域281和非波长转换区域283时序进入光源模组240的光束的出射路径上。光源模组240做旋转运动以使发光单元242出射的光束照射到波长转换区域281或者非波长转换区域283的不同位置，由于每个发光单元242可独立出射光束，再通过单独控制每一个发光单元242出射光束的强度，可以实现光源装置200的局部调光效果，相较于直线式阵列灯珠有效减少了发光单元242的数量，从而有助于降低光源模组240的成本和促进光源模组240的小型化。Please refer to FIG. 1 , the wavelength conversion device 280 is located in the outgoing light path of the light source module 240 , and the light emitted by the light source module 240 is emitted through the wavelength conversion device 280 . The wavelength conversion device 280 includes a wavelength conversion area 281 and a non-wavelength conversion area 283. The wavelength conversion area 281 is used to convert the light beam emitted by the light emitting unit 242 into received laser light, and the non-wavelength conversion area 283 is used to scatter the light beam emitted by the light emitting unit 242. and/or transmission. The wavelength conversion region 281 and the non-wavelength conversion region 283 enter into the light beam exit path of the light source module 240 in sequence. The light source module 240 rotates so that the light beams emitted by the light-emitting units 242 are irradiated to different positions of the wavelength conversion area 281 or the non-wavelength conversion area 283. Since each light-emitting unit 242 can emit light beams independently, each light-emitting unit can be independently controlled by controlling each light-emitting unit. The intensity of the outgoing light beam 242 can achieve the local dimming effect of the light source device 200, effectively reducing the number of light-emitting units 242 compared with the linear array lamp beads, thereby helping to reduce the cost of the light source module 240 and promoting the light source module. 240 miniaturization.
波长转换区域281和非波长转换区域283的总数量为M，波长转换装置280包括至少一个波长转换区域281和至少一个非波长转换区域283，则M为大于或等于2的正整数。波长转换区域281和非波长转换区域283统称为波长转换装置280的分区。例如本实施方式中，M为3，则波长转换装置280包括3个分区，3个分区呈环形分布，每个分区的面积可以相等，并且每个分区的面积大于或等于光源模组240形成的旋转轨迹244的面积。The total number of wavelength conversion regions 281 and non-wavelength conversion regions 283 is M, and the wavelength conversion device 280 includes at least one wavelength conversion region 281 and at least one non-wavelength conversion region 283 , and M is a positive integer greater than or equal to 2. The wavelength conversion region 281 and the non-wavelength conversion region 283 are collectively referred to as subregions of the wavelength conversion device 280 . For example, in this embodiment, if M is 3, the wavelength conversion device 280 includes 3 partitions, the 3 partitions are distributed in a ring shape, the area of each partition can be equal, and the area of each partition is greater than or equal to the area formed by the light source module 240 The area of the rotation track 244 .
波长转换装置280可以为透射式波长转换装置。波长转换装置280设有波长转换材料层，若将发光单元242发出的光称为激发光，则波长转换材料层可以将激发光至少部分转换为受激光。其中，激发光与受激光是相对的概念，激发光表示能够激发波长转换材料层而使得波长转换材料产生不同波长光的光。受激光表示波长转换材料层受激发光激发而产生的光。例如，蓝色光激发黄色光转换材料层产生黄色光，此时蓝色光是激发光，黄色光是受激 光。黄色光激发红色转换材料层产生红色光，此时黄色光是激发光，红色光是受激光。蓝色光激发绿色光转换材料层产生绿色光，此时蓝色光是激发光，绿色光是受激光。The wavelength conversion device 280 may be a transmissive wavelength conversion device. The wavelength conversion device 280 is provided with a wavelength conversion material layer. If the light emitted by the light emitting unit 242 is called excitation light, the wavelength conversion material layer can at least partially convert the excitation light into received laser light. Among them, the excitation light and the received laser light are relative concepts, and the excitation light refers to light that can excite the wavelength conversion material layer so that the wavelength conversion material generates light of different wavelengths. Excited light refers to light generated by excitation of the wavelength conversion material layer by excitation light. For example, the blue light excites the yellow light conversion material layer to generate yellow light, and at this time, the blue light is the excitation light, and the yellow light is the excited light. The yellow light excites the red conversion material layer to generate red light. At this time, the yellow light is the excitation light, and the red light is the received laser light. The blue light excites the green light conversion material layer to generate green light. At this time, the blue light is the excitation light, and the green light is the received laser light.
波长转换材料层可以设置于其中的2个分区内。例如本实施方式中，发光单元242包括蓝色半导体激光二极管，发光单元242发出蓝色激光，则波长转换装置280的其中两个分区中的一个分区设置黄色光转换材料层且另一个分区设置绿色光转换材料层，如此光源模组240与波长转换装置280的波长转换材料配合可以实现红绿光谱。The wavelength conversion material layer can be arranged in 2 of the partitions. For example, in this embodiment, the light-emitting unit 242 includes a blue semiconductor laser diode, and the light-emitting unit 242 emits blue laser light, then one of the two sub-regions of the wavelength conversion device 280 is provided with a yellow light conversion material layer and the other sub-region is provided with a green light conversion material layer The light conversion material layer, so that the light source module 240 and the wavelength conversion material of the wavelength conversion device 280 can cooperate to realize red and green spectrum.
波长转换材料层可以包括磷光材料，例如磷光体，也可以包括纳米材料，如量子点，还可以包括荧光材料，在此不一一列举。在一个实施方式中，波长转换材料层包括荧光材料，波长转换材料层受激出射的受激光为荧光，由于荧光是非相干光，不存在散斑的影响，通过利用蓝色光激发荧光材料产生绿色荧光和红色荧光，能够避免光源模组240发出的光由于相干性导致人眼视觉的散斑问题。The wavelength conversion material layer may include phosphorescent materials, such as phosphors, nanomaterials, such as quantum dots, and fluorescent materials, which are not listed here. In one embodiment, the wavelength conversion material layer includes a fluorescent material, and the excited laser light emitted from the wavelength conversion material layer is fluorescent light. Since the fluorescent light is incoherent light, there is no influence of speckle, and green fluorescent light is generated by exciting the fluorescent material with blue light. and red fluorescence, which can avoid the speckle problem of human vision caused by the coherence of the light emitted by the light source module 240 .
为了适配光源模组240发出的光可以经波长转换装置280出射后改变或不改变波长，光源模组240的旋转频率可以为波长转换装置280的旋转频率的nM倍，其中n为正整数，如此波长转换装置280每旋转360/M度，光源模组240旋转n圈，有助于光源模组240可以根据图像信号所需类型的光，使发光单元242发出的光经过相应的分区。本实施方式中M为3，则光源模组240的旋转频率可以为波长转换装置280的旋转频率的3倍、6倍或9倍等等。In order to adapt that the light emitted by the light source module 240 can change or not change the wavelength after being emitted by the wavelength conversion device 280, the rotation frequency of the light source module 240 can be nM times the rotation frequency of the wavelength conversion device 280, wherein n is a positive integer, In this way, every time the wavelength conversion device 280 rotates 360/M degrees, the light source module 240 rotates n circles, which helps the light source module 240 to pass the light emitted by the light emitting unit 242 through corresponding partitions according to the type of light required by the image signal. In this embodiment, M is 3, and the rotation frequency of the light source module 240 may be 3 times, 6 times, or 9 times the rotation frequency of the wavelength conversion device 280, and so on.
波长转换装置280的旋转方向与光源模组240的旋转方向可以相同或相反。在波长转换装置280和光源模组240的旋转频率和旋转方向不变的情况下，光源模组240的每个发光单元242发出的光照射至波长转换装置280的各个分区的扫描轨迹不变。The rotation direction of the wavelength conversion device 280 and the rotation direction of the light source module 240 may be the same or opposite. Under the condition that the rotation frequency and rotation direction of the wavelength conversion device 280 and the light source module 240 remain unchanged, the scanning trajectory of the light emitted by each light emitting unit 242 of the light source module 240 to each sub-area of the wavelength conversion device 280 remains unchanged.
例如波长转换装置280和光源模组240的旋转频率保持不变，且两者的旋转方向D1相同时，光源模组240的发光单元242发出的光照射至波长转 换装置280的扫描轨迹284如图6所示，波长转换装置280的三个分区的扫描轨迹284相同。For example, when the rotational frequencies of the wavelength conversion device 280 and the light source module 240 remain unchanged, and the rotation directions D1 of the two are the same, the light emitted by the light emitting unit 242 of the light source module 240 is irradiated to the scanning track 284 of the wavelength conversion device 280 as shown in the figure. 6, the scanning trajectories 284 of the three partitions of the wavelength conversion device 280 are the same.
又例如波长转换装置280和光源模组240的旋转频率保持不变，波长转换装置280旋转方向D1与光源模组240的旋转方向D2可以相反，光源模组240的发光单元242发出的光照射至波长转换装置280的扫描轨迹286如图7所示，波长转换装置280的三个分区的扫描轨迹286相同。虽然波长转换装置280和光源模组240的旋转方向相反时形成于分区的扫描轨迹286不同于波长转换装置280和光源模组240的旋转方向相同时形成于分区的扫描轨迹284，但是均没有对光源装置100的出光效果造成影响，则有助于光源装置200可以根据实际状况将波长转换装置280的旋转方向设置为与光源模组240的旋转方向相同或不同，从而可以提高光源装置100的可操作性。For another example, the rotation frequencies of the wavelength conversion device 280 and the light source module 240 remain unchanged, the rotation direction D1 of the wavelength conversion device 280 and the rotation direction D2 of the light source module 240 can be opposite, and the light emitted by the light emitting unit 242 of the light source module 240 is irradiated to The scanning trajectories 286 of the wavelength conversion device 280 are shown in FIG. 7 , and the scanning trajectories 286 of the three partitions of the wavelength conversion device 280 are the same. Although the scanning track 286 formed in the sub-region when the rotation directions of the wavelength conversion device 280 and the light source module 240 are opposite is different from the scanning track 284 formed in the sub-region when the rotation direction of the wavelength conversion device 280 and the light source module 240 are the same, neither of them If the light output effect of the light source device 100 is affected, it is helpful for the light source device 200 to set the rotation direction of the wavelength conversion device 280 to be the same or different from the rotation direction of the light source module 240 according to the actual situation, thereby improving the availability of the light source device 100. operability.
请参阅图8，光源装置200还可以包括处理器260，处理器260可以与光源模组240电连接。处理器260内置多种功能模块，不同的功能模块相互配合并共同实现光源装置200的工作。在一些实施方式中，处理器260可以制作成一个独立的装置、设备等，并通过有线的方式与光源模组240进行信号的传送。在其他一些实施方式中，处理器260也可以与光源模组240集成于一体。Referring to FIG. 8 , the light source device 200 may further include a processor 260 , and the processor 260 may be electrically connected to the light source module 240 . The processor 260 has built-in various functional modules, and different functional modules cooperate with each other and jointly realize the work of the light source device 200 . In some embodiments, the processor 260 can be made into an independent device, equipment, etc., and transmits signals with the light source module 240 in a wired manner. In other embodiments, the processor 260 may also be integrated with the light source module 240 .
处理器260基于图像信号控制光源模组240的发光单元242发光，例如处理器260可以根据图像信号控制位于第一区域的发光单元242发光，处理器260控制位于第一区域的发光单元242的发光方式可以有多种，例如处理器260可以根据图像信号控制位于第一区域的发光单元242在不同时序下的亮度；或者，处理器260根据图像信号控制位于第一区域的不同位置的发光单元242的亮度。此外，处理器260还可以根据图像信号控制位于第二区域的发光单元242熄灭。其中，图像信号可以是需要投射的图像的图像信息，处理器260能够根据图像信号确定光源模组240中对应的发光单元242，并对该发光单元242进行调整，例如可以使发光单元242点亮、熄灭、增强或减弱发光强度等等。The processor 260 controls the light emitting unit 242 of the light source module 240 to emit light based on the image signal. For example, the processor 260 can control the light emitting unit 242 located in the first area to emit light according to the image signal, and the processor 260 controls the light emitting unit 242 located in the first area to emit light. There are various ways. For example, the processor 260 can control the brightness of the light-emitting units 242 located in the first area at different timings according to the image signal; or, the processor 260 can control the light-emitting units 242 located at different positions in the first area according to the image signal. brightness. In addition, the processor 260 can also control the light emitting unit 242 located in the second area to turn off according to the image signal. The image signal may be image information of the image to be projected, and the processor 260 can determine the corresponding light-emitting unit 242 in the light source module 240 according to the image signal, and adjust the light-emitting unit 242, for example, the light-emitting unit 242 can be turned on , extinguish, increase or decrease the luminous intensity, etc.
例如如图9所示为光源模组240中的某一处发光单元242照射至入光面222的光斑，该光斑的长为L，宽为H，该光斑的四个顶点对应的旋转半径分别为r1、r2、r3、r4，该光斑的四个顶点对应的线速度为v1、v2、v3、v4。由于光源模组240中每个发光单元242在光源模组240的位置固定，处理器260可以根据该光斑的上述的各个参数可以确定光源模组240中与该光斑对应的发光单元242，从而可以对该发光单元242进行控制，例如可以使发光单元242点亮、熄灭、增强或减弱发光强度等等。For example, as shown in FIG. 9 , a light spot irradiated by a light emitting unit 242 of the light source module 240 to the light incident surface 222 is shown. The length of the light spot is L and the width is H. The four vertices of the light spot correspond to the rotation radii respectively are r1, r2, r3, and r4, and the linear velocities corresponding to the four vertices of the light spot are v1, v2, v3, and v4. Since the position of each light-emitting unit 242 in the light source module 240 is fixed in the light source module 240, the processor 260 can determine the light-emitting unit 242 in the light source module 240 corresponding to the light spot according to the above parameters of the light spot, so as to To control the light-emitting unit 242, for example, the light-emitting unit 242 can be turned on, turned off, enhanced or weakened, and the like.
例如处理器260根据图像信号可以控制光源模组240的至少一部分发光单元242发光照射至入光面222，从而可以为空间光调制器220的入光面222的特定位置224提供所需的光，如图10所示。For example, the processor 260 can control at least a part of the light emitting units 242 of the light source module 240 to emit light to the light incident surface 222 according to the image signal, so as to provide the required light for the specific position 224 of the light incident surface 222 of the spatial light modulator 220, As shown in Figure 10.
处理器260可以通过控制光源模组240的旋转频率来调整照射于入光面222的光停留于入光面222的时间来实现位于第一区域的不同位置的发光单元242的亮度或者位于第一区域的发光单元242在不同时序下的亮度，由于照射至入光面222的光的照度与光停留于此处的时间和光强有关，在光强不变的情况下，在一定时间范围内光停留的时间越长，则光的照度越大，从而可以实现对光的照度的控制。例如如图11所示，在入光面222的特定位置224中，发光单元242可以沿旋转方向实现光的照度渐变变化，相比于直线式阵列灯珠的光的照度只能实现阶梯式变化，增添了光源模组240为空间光调制器220提供光的效果。The processor 260 can adjust the time that the light irradiated on the light incident surface 222 stays on the light incident surface 222 by controlling the rotation frequency of the light source module 240 to realize the brightness of the light emitting units 242 located at different positions in the first area or the first light emitting unit 242. The brightness of the light-emitting units 242 in the area at different time sequences, since the illuminance of the light irradiated to the light incident surface 222 is related to the time and light intensity that the light stays here, when the light intensity is constant, within a certain time range The longer the light stays, the greater the illuminance of the light, so that the control of the illuminance of the light can be realized. For example, as shown in FIG. 11 , in a specific position 224 of the light incident surface 222 , the light emitting unit 242 can realize a gradual change in the illuminance of the light along the rotation direction, which can only realize a step-like change in the illuminance of the light of the linear array lamp beads. , the effect of the light source module 240 providing light for the spatial light modulator 220 is added.
处理器260根据图像信号还可以控制光源模组240的未照射至入光面222的另一部分发光单元242熄灭，如图12所示，由于未照射至入光面222的光不会经空间光调制器220调制，通过将该另一部分发光单元242熄灭可以降低光源装置200的功耗，达到节省电力的作用。The processor 260 can also control another part of the light emitting unit 242 of the light source module 240 that is not irradiated to the light incident surface 222 to turn off according to the image signal. As shown in FIG. 12 , since the light not irradiated to the light incident surface 222 will not pass through the space light The modulator 220 modulates, and by turning off the other part of the light-emitting units 242, the power consumption of the light source device 200 can be reduced to achieve the effect of saving power.
请参阅图13，光源装置200还可以包括准直透镜组210，准直透镜组210位于波长转换装置280的出射光路，经过波长转换装置280出射的光再经过准直透镜组210准直后出射。Referring to FIG. 13 , the light source device 200 may further include a collimating lens group 210 . The collimating lens group 210 is located in the outgoing light path of the wavelength conversion device 280 , and the light emitted by the wavelength conversion device 280 is collimated by the collimating lens group 210 . out.
在一个实施方式中，准直透镜组210和波长转换装置280间隔设置，准 直透镜组210与光源模组240同步转动。准直透镜组210与光源模组240的形状结构可以相近，例如准直透镜组210为旋转式透镜组，准直透镜组210的旋转轴与光源模组240的旋转轴重合。准直透镜组210包括多个准直透镜，多个准直透镜沿准直透镜组210的旋转轨迹的径向间隔分布，准直透镜组210大体呈长条状结构，使得每个准直透镜用于准直对应的发光单元242发出的光，由于准直透镜组210中无需设置过多数量的准直透镜来覆盖整个波长转换装置280仍然可以对发光单元242发出的光进行准直，有助于简化准直透镜组210的结构，降低准直透镜组210的成本。In one embodiment, the collimating lens group 210 and the wavelength conversion device 280 are arranged at intervals, and the collimating lens group 210 and the light source module 240 rotate synchronously. The shape and structure of the collimating lens group 210 and the light source module 240 may be similar. For example, the collimating lens group 210 is a rotating lens group, and the rotation axis of the collimating lens group 210 coincides with the rotation axis of the light source module 240 . The collimating lens group 210 includes a plurality of collimating lenses, and the plurality of collimating lenses are distributed along the radial interval of the rotation track of the collimating lens group 210. It is used for collimating the light emitted by the corresponding light-emitting unit 242. Since there is no need to set an excessive number of collimating lenses in the collimating lens group 210 to cover the entire wavelength conversion device 280, the light emitted by the light-emitting unit 242 can still be collimated. It is helpful to simplify the structure of the collimating lens group 210 and reduce the cost of the collimating lens group 210 .
在另一个实施方式中，如图14所示，准直透镜组210贴附于波长转换装置280的背离光源模组240的出光面，准直透镜组210中的多个准直透镜可以通过光学胶粘接于透射式波长转换装置的各个分区，例如准直透镜可以粘接于分区中对应形成扫描轨迹的位置，由于减少了准直透镜组210与波长转换装置280之间的间隙，使得准直透镜组210与波长转换装置280之间更为紧凑，有助于促进光源装置200的小型化。In another embodiment, as shown in FIG. 14 , the collimating lens group 210 is attached to the light-emitting surface of the wavelength conversion device 280 away from the light source module 240 , and the collimating lenses in the collimating lens group 210 can pass through the optical The glue is glued to each subsection of the transmissive wavelength conversion device. For example, the collimating lens can be glued to the position corresponding to the scanning track in the subsection. Since the gap between the collimating lens group 210 and the wavelength conversion device 280 is reduced, the The distance between the straight lens group 210 and the wavelength conversion device 280 is more compact, which helps to promote the miniaturization of the light source device 200 .
光源装置200还可以包括均光组件230，均光组件230位于准直透镜组210的出射光路，经过准直透镜组210出射的光再经过均光组件230均光后出射。例如均光组件230可以包括扩散膜232和微透镜阵列模块234，使得发光单元242发出的光经扩散膜232均光后再经微透镜阵列模块234来拼接均匀的照度，如图14所示，由于微透镜阵列模块234内含多个微透镜235，可以对光进行较好的聚合，有助于光的照度均匀地照射于空间光调制器220的入光面222。The light source device 200 may further include a light homogenizing component 230. The light homogenizing component 230 is located in the exit light path of the collimating lens group 210, and the light exiting through the collimating lens group 210 is then homogenized by the light homogenizing component 230 before exiting. For example, the light homogenizing component 230 may include a diffusing film 232 and a microlens array module 234, so that the light emitted by the light emitting unit 242 is homogenized by the diffusing film 232 and then passed through the microlens array module 234 to splicing uniform illuminance, as shown in FIG. 14 , Since the microlens array module 234 includes a plurality of microlenses 235, the light can be well aggregated, which is helpful for uniform illumination of the light on the light incident surface 222 of the spatial light modulator 220.
光源装置200还可以包括棱镜组250，棱镜组250可以设置于光源模组240与空间光调制器220之间来调整光的传播路径。棱镜组250可以包括多个镜片，例如本实施方式中，棱镜组250包括两个三棱镜，两个三棱镜相互配合组成近似方形体结构。棱镜组250位于光源模组240的出射光路，棱镜组250将光源模组240发出的光引导至空间光调制器220，有助于将空间光调制器220与光源模组240之间的相对位置排布得较为紧凑，促进光源装置 200的小型化。The light source device 200 may further include a prism group 250, and the prism group 250 may be disposed between the light source module 240 and the spatial light modulator 220 to adjust the propagation path of light. The prism group 250 may include a plurality of lenses. For example, in this embodiment, the prism group 250 includes two triangular prisms, and the two triangular prisms cooperate with each other to form an approximate square structure. The prism group 250 is located in the outgoing light path of the light source module 240 , and the prism group 250 guides the light emitted by the light source module 240 to the spatial light modulator 220 , which is helpful for the relative relationship between the spatial light modulator 220 and the light source module 240 . The arrangement of the positions is relatively compact, which promotes the miniaturization of the light source device 200 .
请参阅图15，本申请实施方式还提供一种投影设备1000，投影设备1000可以为影院投影机、工程投影机、微型投影机、教育投影机、拼墙投影机、激光电视等等。Referring to FIG. 15, an embodiment of the present application further provides a projection device 1000, which may be a cinema projector, an engineering projector, a pico projector, an educational projector, a wall projector, a laser TV, and the like.
投影设备1000包括空间光调制器220以及上述任一实施方式的光源装置200，空间光调制器220包括入光面222，光源模组240通过旋转使发光单元242相对入光面220处于不同的位置，且使至少一部分发光单元242发出的光入射至入光面222。投影镜头400还可以包括投影镜头400，投影镜头400接收光源装置200发出的光并进行投影出射。例如光源模组240的发光单元242发出光，光可以依次经波长转换装置280、准直透镜组210、扩散膜232、微透镜阵列模块234和棱镜组250后照射至空间光调制器220，并且光经空间光调制器220调制后再经棱镜组250和投影透镜400投影至投影设备1000外。The projection apparatus 1000 includes a spatial light modulator 220 and the light source device 200 of any of the above embodiments. The spatial light modulator 220 includes a light incident surface 222, and the light source module 240 rotates to make the light emitting unit 242 in a different position relative to the light incident surface 220. , and at least a part of the light emitted by the light emitting units 242 is incident on the light incident surface 222 . The projection lens 400 may further include a projection lens 400, and the projection lens 400 receives the light emitted by the light source device 200 and projects and emits it. For example, the light emitting unit 242 of the light source module 240 emits light, and the light can be irradiated to the spatial light modulator 220 through the wavelength conversion device 280, the collimating lens group 210, the diffusion film 232, the microlens array module 234 and the prism group 250 in sequence, and The light is modulated by the spatial light modulator 220 and then projected to the outside of the projection device 1000 through the prism group 250 and the projection lens 400 .
本申请实施方式提供的投影设备1000中，光源模组240间隔设置排列成条状结构的若干发光单242元，波长转换装置280包括波长转换区域281和非波长转换区域283，波长转换区域281用于将发光单元242出射的光束转换为受激光，波长转换区域281和非波长转换区域283时序进入光源模组240的光束的出射路径上，光源模组240做旋转运动以使发光单元242出射的光束照射到波长转换区域281或者非波长转换区域283的不同位置，由于每个发光单元242可独立出射光束，再通过单独控制每一个发光单元242出射光束的强度，可以实现光源装置200的局部调光效果，相较于直线式阵列灯珠有效减少了发光单元242的数量，从而有助于降低光源模组240的成本和促进光源模组240的小型化。In the projection apparatus 1000 provided by the embodiment of the present application, the light source module 240 is provided with a plurality of light-emitting units 242 arranged in a strip-like structure at intervals, and the wavelength conversion device 280 includes a wavelength conversion area 281 and a non-wavelength conversion area 283. The wavelength conversion area 281 uses In order to convert the light beam emitted by the light emitting unit 242 into laser light, the wavelength conversion region 281 and the non-wavelength conversion region 283 enter the light beam output path of the light source module 240 in sequence, and the light source module 240 rotates to make the light emitting unit 242 emit light. The light beams are irradiated to different positions of the wavelength conversion area 281 or the non-wavelength conversion area 283. Since each light-emitting unit 242 can independently emit light beams, and then by individually controlling the intensity of the light beams emitted by each light-emitting unit 242, local adjustment of the light source device 200 can be realized. Compared with the linear array lamp beads, the number of light-emitting units 242 is effectively reduced, thereby helping to reduce the cost of the light source module 240 and promoting the miniaturization of the light source module 240 .
在本申请中，除非另有明确的规定或限定，术语“安装”、“连接”、“固定”等术语应做广义理解。例如，可以是固定连接，也可以是可拆卸连接，或一体连接；可以是机械连接，也可以是电连接；可以是直接连接，也可以通过中间媒介间接相连，也可以是两个元件内部的连通，也可以是仅为 表面接触，或者通过中间媒介的表面接触连接。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。In this application, the terms "installed", "connected", "fixed" and the like should be construed in a broad sense unless otherwise expressly specified or limited. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. Communication can also be only surface contact, or a surface contact connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.
此外，术语“第一”、“第二”等仅用于区分描述，而不能理解为特指或特殊结构。术语“一些实施方式”、“其他实施方式”等的描述意指结合该实施方式或示例描述的具体特征、结构、材料或者特点包含于本实用新型的至少一个实施方式或示例中。在本申请中，对上述术语的示意性表述不必须针对的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施方式或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本申请中描述的不同实施方式或示例以及不同实施方式或示例的特征进行结合和组合。In addition, the terms "first", "second", etc. are only used to distinguish the description, and should not be construed as a specific reference or special structure. The description of the terms "some embodiments," "other embodiments," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this application, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different implementations or examples described in this application, as well as the features of the different implementations or examples, without conflicting each other.
以上实施方式仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施方式对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施方式所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施方式技术方案的精神和范围，均应包含在本申请的保护范围之内。The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The recorded technical solutions are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the application, and should be included in this application. within the scope of protection.

Claims (12)

  1. 一种光源装置，其特征在于，包括：A light source device, characterized in that it includes:
    光源模组，包括间隔设置排列成条状结构的若干发光单元，每个所述发光单元可独立出射光束；The light source module includes a plurality of light-emitting units arranged at intervals and arranged in a strip-like structure, and each of the light-emitting units can emit light beams independently;
    波长转换装置，包括波长转换区域和非波长转换区域，所述波长转换区域用于将所述发光单元出射的光束转换为受激光，所述波长转换区域和所述非波长转换区域时序进入所述光源模组的光束的出射路径上；The wavelength conversion device includes a wavelength conversion area and a non-wavelength conversion area, the wavelength conversion area is used to convert the light beam emitted by the light-emitting unit into a received laser light, and the wavelength conversion area and the non-wavelength conversion area enter the On the outgoing path of the light beam of the light source module;
    所述光源模组做旋转运动以使所述发光单元出射的光束照射到所述波长转换区域或者所述非波长转换区域的不同位置。The light source module rotates so that the light beams emitted by the light emitting unit are irradiated to different positions of the wavelength conversion area or the non-wavelength conversion area.
  2. 根据权利要求1所述的光源装置，其特征在于，若干所述发光单元沿所述光源模组的旋转轨迹的径向间隔分布。The light source device according to claim 1, wherein a plurality of the light emitting units are distributed at intervals along the radial direction of the rotation track of the light source module.
  3. 根据权利要求1所述的光源装置，其特征在于，所述波长转换区域和所述非波长转换区域的总数量为M，所述光源模组的旋转频率为所述波长转换装置的旋转频率的nM倍，其中n为正整数。The light source device according to claim 1, wherein the total number of the wavelength conversion regions and the non-wavelength conversion regions is M, and the rotation frequency of the light source module is a rotation frequency of the wavelength conversion device. nM times, where n is a positive integer.
  4. 根据权利要求1所述的光源装置，其特征在于，所述光源装置还包括准直透镜组，所述准直透镜组位于所述波长转换装置的出射光路上，经过所述波长转换装置出射的光再经过所述准直透镜组准直后出射。The light source device according to claim 1, wherein the light source device further comprises a collimating lens group, and the collimating lens group is located on the outgoing light path of the wavelength conversion device, and the light emitted by the wavelength conversion device The light is collimated by the collimating lens group and then exits.
  5. 根据权利要求4所述的光源装置，其特征在于，所述准直透镜组和所述波长转换装置间隔设置，所述准直透镜组与所述光源模组同步转动。The light source device according to claim 4, wherein the collimating lens group and the wavelength conversion device are arranged at intervals, and the collimating lens group and the light source module rotate synchronously.
  6. 根据权利要求4所述的光源装置，其特征在于，所述准直透镜组贴附于所述波长转换装置的背离所述光源模组的出光面。The light source device according to claim 4, wherein the collimating lens group is attached to a light emitting surface of the wavelength conversion device facing away from the light source module.
  7. 根据权利要求4所述的光源装置，其特征在于，所述光源装置还包括均光组件，所述均光组件位于所述准直透镜组的出射光路，经过所述准直透镜组出射的光再经过所述均光组件均光后出射。The light source device according to claim 4, wherein the light source device further comprises a light homogenizing component, the light homogenizing component is located in the outgoing light path of the collimating lens group, and the light emitted through the collimating lens group exits The light is then emitted after being homogenized by the homogenizing component.
  8. 根据权利要求1所述的光源装置，其特征在于，所述光源模组包括相连接的基板和旋转轴，所述基板呈条状，所述发光单元沿所述基板的长度延伸方向固定于所述基板，所述旋转轴固定于所述基板的端部，所述旋转轴的转动带动所述基板旋转。The light source device according to claim 1, wherein the light source module comprises a connected base plate and a rotating shaft, the base plate is in the shape of a strip, and the light-emitting unit is fixed to the base plate along a length extending direction of the base plate. the base plate, the rotating shaft is fixed on the end of the base plate, and the rotation of the rotating shaft drives the base plate to rotate.
  9. 根据权利要求1所述的光源装置，其特征在于，所述光源模组包括相连接的基板和旋转轴，所述基板呈圆盘状，所述发光单元沿所述基板的径向固定于所述基板，所述旋转轴固定于所述基板的中心位置并带动所述基板旋转。The light source device according to claim 1, wherein the light source module comprises a connected base plate and a rotating shaft, the base plate is in the shape of a disc, and the light emitting unit is fixed to the base plate along the radial direction of the base plate. the base plate, the rotating shaft is fixed at the center position of the base plate and drives the base plate to rotate.
  10. 一种投影设备，其特征在于，包括：A projection device, characterized in that it includes:
    空间光调制器，所述空间光调制器包括入光面；以及a spatial light modulator, the spatial light modulator comprising a light entrance surface; and
    权利要求1至9任一项所述的光源装置，所述光源模组通过旋转使所述发光单元相对所述入光面处于不同的位置，且使至少一部分所述发光单元发出的光入射至所述入光面。The light source device according to any one of claims 1 to 9, wherein the light source module rotates so that the light-emitting units are in different positions relative to the light incident surface, and at least a part of the light emitted by the light-emitting units is incident on the light-emitting unit. the light incident surface.
  11. 根据权利要求10所述的投影设备，其特征在于，所述光源模组通过旋转而选择性地处于第一状态或第二状态，处于所述第一状态的所述光源模组的全部所述发光单元位于第一区域，处于所述第二状态的所述光源模组的一部分所述发光单元位于所述第一区域且另一部分所述发光单元位于第二区域，位于所述第一区域的所述发光单元发出的光照射至所述入光面，位于所述第二区域的所述发光单元发出的光未照射至所述入光面；The projection device according to claim 10, wherein the light source module is selectively in a first state or a second state by rotating, and all the light source modules in the first state are in a first state or a second state. The light-emitting units are located in the first area, and a part of the light-emitting units of the light source module in the second state are located in the first area and the other part of the light-emitting units are located in the second area, and are located in the first area. The light emitted by the light emitting unit is irradiated to the light incident surface, and the light emitted by the light emitting unit located in the second area is not irradiated to the light incident surface;
    所述光源装置还包括处理器，所述处理器根据图像信号控制位于所述第 一区域的所述发光单元发光，所述处理器根据所述图像信号还控制位于所述第二区域的所述发光单元熄灭。The light source device further includes a processor, the processor controls the light emitting unit located in the first area to emit light according to an image signal, and the processor further controls the light emitting unit located in the second area according to the image signal. The light-emitting unit goes out.
  12. 根据权利要求11所述的投影设备，其特征在于，所述处理器根据图像信号控制位于所述第一区域的所述发光单元发光包括以下至少一种方式：The projection device according to claim 11, wherein the processor controlling the light-emitting unit located in the first area to emit light according to an image signal comprises at least one of the following ways:
    所述处理器根据所述图像信号控制位于所述第一区域的所述发光单元在不同时序下的亮度；The processor controls the brightness of the light-emitting units located in the first area at different timings according to the image signal;
    所述处理器根据所述图像信号控制位于所述第一区域的不同位置的所述发光单元的亮度。The processor controls the brightness of the light emitting units located at different positions of the first area according to the image signal.
PCT/CN2021/110776 2020-08-06 2021-08-05 Light source apparatus and projection device WO2022028511A1 (en)

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CN103430553A (en) * 2011-03-14 2013-12-04 杜比实验室特许公司 Local dimming of a laser light source for projectors and other lighting devices including cinema, entertainment systems, and displays
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