CN112068326B

CN112068326B - 3D display device

Info

Publication number: CN112068326B
Application number: CN202010982269.XA
Authority: CN
Inventors: 周振兴; 洪涛; 孙高明
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2022-08-09
Anticipated expiration: 2040-09-17
Also published as: CN112068326A

Abstract

The utility model relates to a show technical field, provide a 3D display device, it includes: the display device comprises a first display module, a second display module, a third display module, a first lens set and a second lens set. The first display module is used for providing a first image and a second image; the second display module is used for providing a third image; the third display module is used for providing a fourth image; the first lens group is used for imaging a virtual image of the first image to the first virtual image surface and imaging a virtual image of the third image to the second virtual image surface; the second lens group is used for imaging a virtual image of the second image to the first virtual image surface and imaging a virtual image of the fourth image to the third virtual image surface; the first virtual image surface and the second virtual image surface are located on different planes, and the first virtual image surface and the third virtual image surface are located on different planes. The 3D display device can simultaneously realize parallax 3D display and multi-focal plane 3D display.

Description

3D display device

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a 3D display device.

Background

The 3D display device generally adopts a parallax 3D display technology to realize a 3D display effect, and the parallax 3D display technology provides two sets of different images to the left and right eyes of a person, where the two sets of images are images at different angles in the same scene. The human brain can process the two groups of images, so that a three-dimensional image effect is formed according to the two groups of images.

However, because human beings live in a three-dimensional space, information acquisition by human eyes is based on three-dimensional, and a processing mode of information obtained by human eyes by a brain is customary, while the existing imaging schemes of 3D display devices such as VR and AR are based on a binocular parallax 3D technology, depth information of a scene is lost, focusing and habit of human eyes are inconsistent, and fatigue of human eyes, namely, convergence of vision conflict, is caused.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

BRIEF SUMMARY OF THE PRESENT DISCLOSURE

The utility model aims to provide a 3D display device, this 3D display device can solve the technical problem of convergence conflict among the correlation technique.

Other features and advantages of the disclosure will be apparent from the following detailed description, or may be learned by practice of the disclosure.

According to an aspect of the present disclosure, there is provided a 3D display device, the 3D display device including: the display device comprises a first display module, a second display module, a third display module, a first lens set and a second lens set. The first display module is used for providing a first image and a second image, and the first image and the second image form a stereo pair; the second display module is used for providing a third image, and the third image and the first image are two images with different depths of field in the same scene; the third display module is used for providing a fourth image, and the fourth image and the second image are two images with different depths of field in the same scene; the first lens group is used for imaging a virtual image of the first image to a first virtual image surface and imaging a virtual image of the third image to a second virtual image surface; the second lens group is used for imaging a virtual image of the second image to the first virtual image surface and imaging a virtual image of the fourth image to a third virtual image surface; the first virtual image surface and the second virtual image surface are located on different planes, and the first virtual image surface and the third virtual image surface are located on different planes.

In an exemplary embodiment of the present disclosure, the second virtual image plane and the third virtual image plane are located on the same plane.

In one exemplary embodiment of the present disclosure, the first lens group includes: the lens comprises a first lens, a second lens, a third lens and a fourth lens. The first lens comprises a first side surface, a second side surface and a third side surface, and is used for receiving the light corresponding to the third image by using the first side surface, refracting the light incident to the first side surface to the second side surface and reflecting the light incident to the second side surface to the third side surface; the second lens comprises a fourth side surface, a fifth side surface and a sixth side surface, and is used for receiving the light emergent from the third side surface by using the fourth side surface, refracting the light incident to the fourth side surface to the fifth side surface and reflecting the light incident to the fifth side surface to the sixth side surface; the third lens comprises a seventh side surface, an eighth side surface and a ninth side surface, and is used for receiving the light corresponding to the first image by using the seventh side surface, refracting the light incident to the seventh side surface to the eighth side surface and reflecting the light incident to the eighth side surface to the ninth side surface; the fourth lens comprises a tenth side surface, an eleventh side surface and a twelfth side surface, and is used for receiving the light emitted from the ninth side surface by the tenth side surface, refracting the light emitted from the ninth side surface to the eleventh side surface, reflecting the light incident on the eleventh side surface to the twelfth side surface, receiving the light emitted from the sixth side surface by the eleventh side surface, and refracting the light emitted from the sixth side surface to the twelfth side surface.

In an exemplary embodiment of the present disclosure, the second lens group includes: a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element. The fifth lens comprises a thirteenth side surface, a fourteenth side surface and a fifteenth side surface, and is used for receiving light rays corresponding to the fourth image by using the thirteenth side surface, refracting the light rays incident to the thirteenth side surface to the fourteenth side surface, and reflecting the light rays incident to the fourteenth side surface to the fifteenth side surface; the sixth lens comprises a sixteenth side surface, a seventeenth side surface and an eighteenth side surface, and is used for receiving the light emitted from the fifteenth side surface by using the sixteenth side surface, refracting the light incident to the sixteenth side surface to the seventeenth side surface and reflecting the light incident to the seventeenth side surface to the eighteenth side surface; the seventh lens comprises a nineteenth side surface, a twentieth side surface and a twentieth side surface, and is used for receiving light rays corresponding to the second image by using the nineteenth side surface, refracting the light rays incident to the nineteenth side surface to the twentieth side surface and reflecting the light rays incident to the twentieth side surface; the eighth lens comprises a twenty-second side surface, a twenty-third side surface and a twenty-fourth side surface, and is used for receiving the light emitted from the twentieth side surface by using the twenty-second side surface, refracting the light emitted from the twentieth side surface to the twenty-third side surface, reflecting the light emitted to the twenty-third side surface to the twenty-fourth side surface, receiving the light emitted from the eighteenth side surface by using the twenty-third side surface, and refracting the light emitted from the eighteenth side surface to the twenty-fourth side surface.

In an exemplary embodiment of the present disclosure, the first lens, the second lens, the fourth lens, the third lens, the seventh lens, the eighth lens, the sixth lens, and the fifth lens are distributed in sequence along a first direction; the second display module is positioned on one side of the first lens in the second direction, the first display module is positioned on one sides of the third lens and the seventh lens in the second direction, and the third display module is positioned on one side of the fifth lens in the second direction; wherein the first direction and the second direction intersect.

In an exemplary embodiment of the present disclosure, the first display module includes a main display area, the main display area includes a first display area, a second display area, and a third display area sequentially distributed along the first direction, the first display area and the second display area are used for providing the first image, and the second display area and the third display area are used for providing the second image.

In an exemplary embodiment of the present disclosure, the first display module further includes: and the redundant display area is positioned around the main display area.

In one exemplary embodiment of the present disclosure, the 3D display device further includes: the device comprises a first polarizer, a second polarizer, a first polarization beam splitter, a third polarizer and a second polarization beam splitter. The first polarizer is arranged on the light emergent side of the first display module and used for converting the light emitted by the first display module into first type polarized light; the second polarizer is arranged on the light emergent side of the second display module and used for converting the light emitted by the second display module into second type polarized light; the first polarization beam splitter is arranged between the eleventh side surface and the sixth side surface and used for reflecting the first type of polarized light and transmitting the second type of polarized light; the third polarizer is arranged on the light emergent side of the third display module and used for converting the light emitted by the third display module into the polarized light of the second type; and the second polarization beam splitter is arranged between the thirteenth side surface and the eighteenth side surface and is used for reflecting the first type of polarized light and transmitting the second type of polarized light.

In an exemplary embodiment of the present disclosure, the first polarizer is an S-light generator, the first type of polarized light is S-polarized light, the second polarizer and the third polarizer are P-light generators, and the second type of polarized light is P-polarized light.

In an exemplary embodiment of the present disclosure, the sixth side surface of the second lens is connected to the eleventh side surface of the fourth lens, and the eighteenth side surface of the sixth lens is connected to the twenty-third side surface of the eighth lens.

The present disclosure provides a 3D display device, the 3D display device including: the display device comprises a first display module, a second display module, a third display module, a first lens set and a second lens set. The first display module is used for providing a first image and a second image, and the first image and the second image form a stereo pair; the second display module is used for providing a third image, and the third image and the first image are two images with different depths of field in the same scene; the third display module is used for providing a fourth image, and the fourth image and the second image are two images with different depths of field in the same scene; the first lens group is used for imaging a virtual image of the first image to a first virtual image surface and imaging a virtual image of the third image to a second virtual image surface; the second lens group is used for imaging a virtual image of the second image to the first virtual image surface and imaging a virtual image of the fourth image to a third virtual image surface; the first virtual image surface and the second virtual image surface are located on different planes, and the first virtual image surface and the third virtual image surface are located on different planes. The left and right eyes of the person can receive the first image and the second image, respectively, thereby realizing a 3D display effect through parallax. In addition, one eyeball of the human can receive the first image and the third image by adjusting the focal length, and the human brain can generate a three-dimensional image according to the first image and the third image because the third image and the first image are two images with different depths of field in the same scene; meanwhile, the other eyeball of the person can receive the second image and the fourth image by adjusting the focal length, and the brain of the person can generate a three-dimensional image according to the second image and the fourth image because the second image and the fourth image are two images with different depths of field in the same scene. The 3D display device provided by the present disclosure can realize parallax 3D display and multi-focal-length 3D display effects simultaneously.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 is a schematic structural diagram of an exemplary embodiment of a 3D display device according to the present disclosure;

fig. 2 is a schematic structural diagram of another exemplary embodiment of a 3D display device according to the present disclosure;

fig. 3 is a schematic structural diagram of another exemplary embodiment of a 3D display device according to the present disclosure;

fig. 4 is a schematic structural diagram of a first display module in an exemplary embodiment of a 3D display device according to the present disclosure;

fig. 5 is a schematic structural diagram of another exemplary embodiment of a 3D display device according to the present disclosure;

fig. 6 is a partial structural schematic view of another exemplary embodiment of a 3D display device according to the present disclosure;

fig. 7 is a partial structural schematic view of another exemplary embodiment of a 3D display device according to the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". Other relative terms, such as "high," "low," "top," "bottom," "left," "right," and the like are also intended to have similar meanings. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," and the like are used to denote the presence of one or more elements/components/groups; the terms "comprising" and "having" are used in an inclusive sense and mean that there may be additional elements/components/integers other than the listed elements/components/integers.

The present exemplary embodiment provides a 3D display device, as shown in fig. 1, which is a schematic structural diagram of an exemplary embodiment of the 3D display device according to the present disclosure. The 3D display device includes: the display module comprises a first display module 1, a second display module 2, a third display module 3, a first lens group 4 and a second lens group 5. The first display module 1 is used for providing a first image and a second image, and the first image and the second image form a stereo pair; the second display module 2 is used for providing a third image, and the third image and the first image are two images with different depths of field in the same scene; the third display module 3 is used for providing a fourth image, and the fourth image and the second image are two images with different depths of field in the same scene; the first lens group 4 is for imaging a virtual image of the first image onto a first virtual image surface 61, and imaging a virtual image of the third image onto a second virtual image surface 62; the second lens group 5 is for imaging a virtual image of the second image onto the first virtual image surface 61 and a virtual image of the fourth image onto the third virtual image surface 63; wherein the first and second

virtual image planes

61 and 62 are located at different planes, and the first and third

virtual image planes

61 and 63 are located at different planes.

It should be noted that a stereopair refers to two sets of image information at different angles in the same scene. The left eye and the right eye of the person can respectively receive the two groups of image information in the stereo phase pair, and the brain can synthesize a stereo image according to the two groups of image information. The depth of field may refer to a distance from a display image to human eyes, the human eyes may focus on images of different depth of field, and the human eyes may obtain images of different depth of field by switching the images of different depth of field, so as to combine the images of different depth of field into a stereoscopic image through a brain.

As shown in fig. 1, the first eyeball 71 and the second eyeball 72 of the person can receive the first image and the second image, respectively, thereby realizing a 3D effect through a parallax 3D display technique. In addition, the first eyeball 71 of the person can receive the first image and the third image by adjusting the focal length, and when the first eyeball 71 is focused on the first virtual image surface 61, the image information of the second virtual image surface 62 is out of focus and blurred to a certain extent; similarly, when the first eyeball 71 focuses on the second virtual image surface 62, the image information of the first virtual image surface 61 is out of focus and blurred to some extent. When the focus point of the first eyeball 71 of the person is switched between the first virtual image plane 61 and the second virtual image plane 62, information imaged on two depths of field can be obtained, so that a 3D effect can be achieved by the multi-focal-plane 3D display technology. Similarly, the second eyeball 72 may receive the second image and the fourth image with different depths of field by adjusting the focal length, thereby implementing a 3D effect. The 3D display device provided by the present exemplary embodiment can realize a 3D display effect by a parallax 3D display technique and a multi-focal plane 3D display technique at the same time. On one hand, the multi-focal plane 3D display technology can provide depth information of scenes, so that the problem of convergence conflict of human eyes is solved; on the other hand, the combination of the two 3D display technologies can improve the 3D display effect.

In the present exemplary embodiment, as shown in fig. 1, the second virtual image plane 62 and the third virtual image plane 63 may be located on the same plane. This arrangement can improve the comfort level of the viewer. It should be understood that in other exemplary embodiments, the second and third

virtual image planes

62 and 63 may also be located at different planes.

In the present exemplary embodiment, as shown in fig. 2, a schematic structural diagram of another exemplary embodiment of the 3D display device of the present disclosure is shown. The first lens group 4 may include: a first lens 41, a second lens 42, a third lens 43, and a fourth lens 44. The first lens 41 may include a first side 411, a second side 412, and a third side 413, and the first lens 41 may be configured to receive a light 01 corresponding to the third image by using the first side 411, refract the light incident to the first side 411 to the second side 412, and reflect the light incident to the second side 412 to the third side 413; the second lens 42 may include a fourth side 421, a fifth side 422, and a sixth side 423, and the second lens 42 may be configured to receive the light exiting from the third side 413 through the fourth side 421, refract the light incident on the fourth side 421 to the fifth side 422, and reflect the light incident on the fifth side 422 to the sixth side 423; the third lens 43 may include a seventh side 431, an eighth side 432, and a ninth side 433, and the third lens 43 may be configured to receive the light 02 corresponding to the first image by using the seventh side 431, refract the light incident to the seventh side 431 to the eighth side 432, and reflect the light incident to the eighth side 432 to the ninth side 433; the fourth lens 44 may include a tenth side 441, an eleventh side 442, and a twelfth side 443, and the fourth lens 44 may be configured to receive the light exiting from the ninth side 433 through the tenth side 441, refract the light exiting from the ninth side 433 to the eleventh side 442, reflect the light entering the eleventh side 442 to the twelfth side 443, and receive the light exiting from the sixth side 423 through the eleventh side 442, and refract the light exiting from the sixth side 423 to the twelfth side 443.

In the present exemplary embodiment, as shown in fig. 2, the second lens group 5 may include: a fifth lens 55, a sixth lens 56, a seventh lens 57, and an eighth lens 58. The fifth lens 55 may include a thirteenth side surface 551, a fourteenth side surface 552 and a fifteenth side surface 553, and the fifth lens 55 is configured to receive the light 03 corresponding to the fourth image by using the thirteenth side surface 551, refract the light incident on the thirteenth side surface 551 to the fourteenth side surface 552, and reflect the light incident on the fourteenth side surface 552 to the fifteenth side surface 553. The sixth lens may include a sixteenth side 561, a seventeenth side 562, and an eighteenth side 563, and the sixth lens may be configured to receive light exiting from the fifteenth side 553 by the sixteenth side 561, refract light incident to the sixteenth side 561 to the seventeenth side 562, and reflect light incident to the seventeenth side 562 to the eighteenth side 563; the seventh lens 57 may include a nineteenth side 571, a twentieth side 572, and a twenty-first side 573, and the seventh lens 57 may be configured to receive the light 04 corresponding to the second image by using the nineteenth side 571, refract the light incident on the nineteenth side 571 to the twentieth side 572, and reflect the light incident on the twentieth side 572 to the twenty-first side 573; the eighth lens 58 may include a twentieth side 581, a twentieth side 582, and a twentieth side 583, and the eighth lens 58 may be further configured to receive the light emitted from the twentieth side 573 by the twentieth side 581, refract the light emitted from the twentieth side 573 to the twentieth side 582, reflect the light incident on the twentieth side 582 to the twenty-fourth side 583, and receive the light emitted from the eighteenth side 563 by the twentieth side 582, and refract the light emitted from the eighteenth side 563 to the twenty-fourth side 583.

As shown in fig. 2, the light ray 02 corresponding to the first image may enter the first eyeball 71 through the third lens 43 and the fourth lens 44, and the first eyeball may see a virtual image of the first image at the first virtual image plane 61. The light 01 corresponding to the third image may enter the first eyeball 71 through the first lens 41, the second lens 42 and the fourth lens 44 in sequence. The first eyeball 71 can see a virtual image of the third image at the second virtual image plane 62. Since the propagation path of the light corresponding to the first image is different from the propagation path of the light corresponding to the third image, the first virtual image plane 61 and the second virtual image plane 62 are located on different planes. The light corresponding to the second image can enter the second eyeball 72 through the seventh lens 57 and the eighth lens 58 in this order, and the virtual image of the second image can be seen by the second eyeball 72 at the first virtual image plane 61. Light corresponding to the fourth image can enter the second eyeball 72 through the fifth lens 55, the sixth lens 56 and the eighth lens 58 in sequence, and the second eyeball can see a virtual image of the fourth image on the third virtual image surface 63. Since the propagation path of the light corresponding to the second image is different from the propagation path of the light corresponding to the fourth image, the first virtual image plane 61 and the third virtual image plane 63 are located on different planes.

In the present exemplary embodiment, as shown in fig. 2, the first lens 41, the second lens 42, the fourth lens 44, the third lens 43, the seventh lens 57, the eighth lens 58, the sixth lens 56, and the fifth lens 55 may be distributed in sequence along the first direction X; the second display module 2 may be located on one side of the first lens 41 in the second direction Y, the first display module 1 may be located on one side of the third lens 43 and the seventh lens 57 in the second direction Y, and the third display module 3 may be located on one side of the fifth lens 55 in the second direction Y; wherein the first direction X and the second direction Y may intersect, for example, the first direction X and the second direction Y are perpendicular. The position relation of each lens and the display module is combined with the structural shape of each lens, so that light rays corresponding to the first image, the second image, the third image and the fourth image can be transmitted along the path.

In the present exemplary embodiment, as shown in fig. 3, a schematic structural diagram of another exemplary embodiment of the 3D display device of the present disclosure is shown. The second display module 2 can be rotatably disposed on one side of the first lens 41 in the second direction Y, and the propagation path of the light corresponding to the third image can be adjusted by rotating the second display module 2. The third display module 3 may be rotatably disposed on one side of the fifth lens 55 in the second direction Y, and the propagation path of the light corresponding to the fourth image may be adjusted by rotating the third display module 3. The first display module 1 may be disposed parallel to the first direction X.

In the present exemplary embodiment, the material of each lens may be a transparent material such as glass and plastic. The material of each lens can be selected from plastic, and the plastic material has better processability when being processed into the free-form-surface lens, namely the plastic material can be more easily processed into the free-form-surface lens. In the present exemplary embodiment, as shown in fig. 2 and 3, the second side surface 412, the fifth side surface 422, the eighth side surface 432, the fourteenth side surface 552, the seventeenth side surface 562 and the twentieth side surface 572 may be reflective mirror surfaces or total reflective surfaces, and when the side surfaces are total reflective surfaces, the incident angles of the side surfaces need to be greater than arcsin (1/n) ₁ ) Wherein n is ₁ Is the refractive index of the lens on which the side surface is located.

In the present exemplary embodiment, as shown in fig. 2 and 3, the sixth side 423 of the second lens 42 may contact the eleventh side 442 of the fourth lens 44, that is, the second lens 42 and the sixth lens 56 share the same side. The eighteenth side 563 of the sixth lens 56 may be in contact with the twenty-third side 582 of the eighth lens 58, i.e. the sixth lens 56 and the eighth lens 58 share the same layer.

In the present exemplary embodiment, the side (sixth side 423/eleventh side 442) shared by the second lens 42 and the sixth lens 56 may be a half-mirror surface. The same side (the eighteenth side 563/the twentieth side 582) shared by the sixth lens 56 and the eighth lens 58 may be a half-mirror surface. If the ratio of the reflectivity of the common side of the second lens 42 and the sixth lens 56 to the transmittance thereof is N: if the intensity of the light corresponding to the first image reaching the human eyes is ensured to be the same as the intensity of the light corresponding to the third image reaching the human eyes, the ratio of the brightness of the first image to the brightness of the third image needs to be 1: and N is added. Similarly, if the reflectance and transmittance ratio of the common side of the sixth lens 56 and the eighth lens 58 are N: 1, if it is ensured that the intensity of the light corresponding to the second image reaching the human eyes is the same as the intensity of the light corresponding to the fourth image reaching the human eyes, the ratio of the brightness of the second image to the brightness of the fourth image needs to be 1: and N is added.

In the present exemplary embodiment, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens may be free-form surface structures. The free-form surface lens may use a structure representing a free-form surface such as an xy polynomial or a zernike polynomial. For example, the xy polynomial expression is:

wherein z1 is the coordinate of the free-form surface lens on the z axis in the three-dimensional coordinate system, x is the coordinate of the free-form surface lens on the x group axis in the three-dimensional coordinate system, and y is the coordinate of the free-form surface lens on the y axis in the three-dimensional coordinate system. c1, k1, p, Cmn1 are parameters for determining the free-form lens structure. Compared with lenses in the shapes of a spherical surface, an aspherical surface, a Fresnel surface and the like, the free-form surface lens has higher design freedom and stronger off-axis aberration correction capability.

It should be understood that in other exemplary embodiments, the first lens group 4 and the second lens group 5 may have other structures. For example, the first lens group and the second lens group may also be composed of other numbers and distributions of lenses. Each lens may be a spherical, aspherical, fresnel surface, or the like.

In the present exemplary embodiment, as shown in fig. 4, a schematic structural diagram of a first display module in an exemplary embodiment of the 3D display device of the present disclosure is shown. The first display module 1 may include a main display area, the main display area includes a first display area 11, a second display area 12, and a third display area 13 that are distributed in sequence along the first direction, the first display area 11 and the second display area 12 are used for providing the first image, and the second display area 12 and the third display area 13 are used for providing the second image. The second display area 12 is used for displaying the same portions of the two images in the stereoscopic pair, and the first display area 11 and the third display area 13 are used for respectively displaying different portions of the two images in the stereoscopic pair. When the 3D display device assembles, there is assembly error to easily lead to the human eye to see the black frame of first display module assembly. In this exemplary embodiment, the first display module 1 may further include: a redundant display area 14, which may be located around the main display area. The redundant display area can also display images, and when the 3D display device has assembly errors, human eyes can see the images of the redundant display area 14, so that the human eyes are prevented from seeing the black frame of the display module.

Since the common side surface formed by the sixth side surface 423 and the eleventh side surface 442 is a transflective surface, when the light beams from the tenth side surface 441 and the fifth side surface 422 pass through the common side surface formed by the sixth side surface 423 and the eleventh side surface 442, stray light may be formed by multiple reflections between the fifth side surface 422 and the common side surface. Similarly, stray light of multiple reflections is formed between the common side surface formed by the eighteenth side surface 563 and the twenty-third side surface 582 and the seventeenth side surface 562. In the present exemplary embodiment, as shown in fig. 5, a schematic structural diagram of another exemplary embodiment of the 3D display device of the present disclosure is shown. The 3D display device may further include: a first polarizer 81, a second polarizer 82, a first polarization beam splitter 91, a third polarizer 83, and a second polarization beam splitter 92. The first polarizer 81 may be disposed on the light emitting side of the first display module 1, and is configured to convert the light emitted by the first display module 1 into a first type of polarized light; the second polarizer 82 may be disposed on the light emitting side of the second display module 2, and is configured to convert the light emitted by the second display module 2 into a second type of polarized light; the first polarization beam splitter 91 may be disposed between the eleventh side 442 and the sixth side 423 for reflecting the first type of polarized light and transmitting the second type of polarized light, and at the same time, the first polarization beam splitter 91 may avoid transmitting the first type of polarized light and avoid reflecting the second type of polarized light. The first polarization beam splitter 91 may be disposed in contact with the eleventh side 442 and the sixth side 423, respectively. The third polarizer 83 may be disposed on the light emitting side of the third display module 3, and is configured to convert the light emitted by the third display module 3 into the polarized light of the second type; the second polarization beam splitter 92 may be disposed between the twentieth side surface 582 and the eighteenth side surface 563 for reflecting the first type of polarized light and transmitting the second type of polarized light, and at the same time, the second polarization beam splitter 92 may avoid transmitting the first type of polarized light and avoiding reflecting the second type of polarized light. Wherein the second polarization beam splitter 92 may be disposed in contact with the twentieth and eighteenth side surfaces 582 and 563, respectively. This arrangement can prevent stray light from being formed between the common side face formed by the sixth side face 423, the eleventh side face 442 and the fifth side face 422, and can prevent stray light from being formed between the common side face formed by the eighteenth side face 563 and the thirteenth side face 582 and the seventeenth side face 562.

The first polarizer 81 may be an S-light generator, the first type of polarized light may be S-polarized light, the second polarizer and the third polarizer may be P-light generators, and the second type of polarized light may be P-polarized light. It should be understood that the first and second types of polarized light may also be other types of polarized light, for example, the first polarizer may be a P-light generator, the first type of polarized light may be P-polarized light, the second and third polarizers may be S-light generators, and the second type of polarized light may be S-polarized light. In the exemplary embodiment, the S-ray generator may be formed by combining a P-direction linear polarizer and a half-wave plate at an angle of 45 °; the P-ray generator may be formed by combining an S-direction linear polarizer and a half-wave plate at an angle of 45 °.

In the above exemplary embodiment, the sixth side 423 of the second lens 42 and the eleventh side 442 of the fourth lens 44 are in direct contact or connected by a beam splitter; the eighteenth side 563 of the sixth lens 56 and the twenty-third side 582 of the eighth lens 58 are in direct contact or connected by a beam splitter. It should be understood that in other exemplary embodiments, as shown in fig. 6, a partial structural schematic diagram in another exemplary embodiment of the 3D display device of the present disclosure is shown. The sixth side 423 of the second lens 42 and the eleventh side 442 of the fourth lens 44 may be spaced apart. Similarly, the eighteenth side 563 of the sixth lens 56 and the twenty-third side 582 of the eighth lens 58 may be spaced apart. Fig. 7 is a partial schematic structural diagram of a 3D display device according to another exemplary embodiment of the disclosure. The first polarization beam splitter 91 may be disposed between the eleventh side 442 and the sixth side 423 and spaced apart from the eleventh side 442 and the sixth side 423. Similarly, the second polarization splitter 92 may be disposed between the twentieth side surface 582 and the eighteenth side surface 563 and spaced apart from the twentieth side surface 582 and the eighteenth side surface 563.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the following claims.

Claims

1. A3D display device, comprising:

the first display module is used for providing a first image and a second image, and the first image and the second image form a stereo pair;

the second display module is used for providing a third image, and the third image and the first image are two images with different depths of field in the same scene;

the third display module is used for providing a fourth image, and the fourth image and the second image are two images with different depths of field in the same scene;

a first lens group for imaging a virtual image of the first image onto a first virtual image surface and a virtual image of the third image onto a second virtual image surface;

a second lens group for imaging a virtual image of the second image onto the first virtual image surface and a virtual image of the fourth image onto a third virtual image surface;

the first virtual image surface and the second virtual image surface are located on different planes, and the first virtual image surface and the third virtual image surface are located on different planes;

the first lens group includes:

the first lens comprises a first side surface, a second side surface and a third side surface, and is used for receiving the light corresponding to the third image by using the first side surface, refracting the light incident to the first side surface to the second side surface and reflecting the light incident to the second side surface to the third side surface;

the second lens comprises a fourth side surface, a fifth side surface and a sixth side surface, and is used for receiving the light emergent from the third side surface by using the fourth side surface, refracting the light incident to the fourth side surface to the fifth side surface and reflecting the light incident to the fifth side surface to the sixth side surface;

a third lens, including a seventh side surface, an eighth side surface, and a ninth side surface, configured to receive light corresponding to the first image by using the seventh side surface, refract the light incident to the seventh side surface to the eighth side surface, and reflect the light incident to the eighth side surface to the ninth side surface;

a fourth lens, including a tenth side surface, an eleventh side surface, and a twelfth side surface, configured to receive the light exiting from the ninth side surface by using the tenth side surface, refract the light exiting from the ninth side surface to the eleventh side surface, reflect the light entering the eleventh side surface to the twelfth side surface, and receive the light exiting from the sixth side surface by using the eleventh side surface, and refract the light exiting from the sixth side surface to the twelfth side surface;

the second lens group includes:

a fifth lens, including a thirteenth side surface, a fourteenth side surface and a fifteenth side surface, configured to receive a light ray corresponding to the fourth image by using the thirteenth side surface, refract the light ray incident to the thirteenth side surface to the fourteenth side surface, and reflect the light ray incident to the fourteenth side surface to the fifteenth side surface;

a sixth lens, including a sixteenth lateral surface, a seventeenth lateral surface and an eighteenth lateral surface, configured to receive the light emitted from the fifteenth lateral surface through the sixteenth lateral surface, refract the light incident on the sixteenth lateral surface to the seventeenth lateral surface, and reflect the light incident on the seventeenth lateral surface to the eighteenth lateral surface;

a seventh lens, including a nineteenth side surface, a twentieth side surface, and a twentieth side surface, configured to receive light corresponding to the second image by using the nineteenth side surface, refract light incident to the nineteenth side surface to the twentieth side surface, and reflect light incident to the twentieth side surface;

the eighth lens comprises a twenty-second side surface, a twenty-third side surface and a twenty-fourth side surface, and is used for receiving the light emitted from the twentieth side surface by using the twenty-second side surface, refracting the light emitted from the twentieth side surface to the twenty-third side surface, reflecting the light emitted to the twenty-third side surface to the twenty-fourth side surface, receiving the light emitted from the eighteenth side surface by using the twenty-third side surface, and refracting the light emitted from the eighteenth side surface to the twenty-fourth side surface.

2. The 3D display device according to claim 1, wherein the second virtual image plane and the third virtual image plane are located on the same plane.

3. The 3D display device according to claim 1, wherein the first lens, the second lens, the fourth lens, the third lens, the seventh lens, the eighth lens, the sixth lens, and the fifth lens are sequentially distributed along a first direction;

the second display module is positioned on one side of the first lens in the second direction, the first display module is positioned on one sides of the third lens and the seventh lens in the second direction, and the third display module is positioned on one side of the fifth lens in the second direction;

wherein the first direction and the second direction intersect.

4. The 3D display device according to claim 3, wherein the first display module comprises a main display area, the main display area comprises a first display area, a second display area and a third display area, the first display area, the second display area and the third display area are sequentially distributed along the first direction, the first display area and the second display area are used for providing the first image, and the second display area and the third display area are used for providing the second image.

5. The 3D display device according to claim 4, wherein the first display module further comprises:

and the redundant display area is positioned around the main display area.

6. The 3D display device according to claim 1, wherein the 3D display device further comprises:

the first polarizer is arranged on the light emergent side of the first display module and used for converting the light emitted by the first display module into first type polarized light;

the second polarizer is arranged on the light emergent side of the second display module and used for converting the light emitted by the second display module into second type polarized light;

the first polarization beam splitter is arranged between the eleventh side surface and the sixth side surface and used for reflecting the first type of polarized light and transmitting the second type of polarized light;

the third polarizer is arranged on the light emergent side of the third display module and used for converting the light emitted by the third display module into the polarized light of the second type;

and the second polarization beam splitter is arranged between the thirteenth side surface and the eighteenth side surface and is used for reflecting the first type of polarized light and transmitting the second type of polarized light.

7. The 3D display device according to claim 6, wherein the first polarizer is an S-light generator, the first type of polarized light is S-polarized light, the second polarizer and the third polarizer are P-light generators, and the second type of polarized light is P-polarized light.

8. The 3D display device according to claim 3, wherein the sixth side surface of the second lens is connected with the eleventh side surface of the fourth lens, and the eighteenth side surface of the sixth lens is connected with the twentieth side surface of the eighth lens.