Naked eye 3D display optics

Abstract

The embodiment of the present application relates to the field of optical display, and discloses a naked-eye 3D display optical device and a naked-eye 3D display system.The naked-eye 3D display optical device comprises a light barrier layer and at least one lens array layer, the light barrier layer comprises light transmission areas and light shielding areas arranged at intervals, each lens array layer in the at least one lens array layer comprises a lens assembly, and the lens assembly comprises a plurality of lens areas arranged at intervals.The light transmission area of the light barrier layer corresponds to the lens area of any lens array layer one by one, the center points of each light transmission area in the light barrier layer are on a straight line, and the aperture of each light transmission area is less than or equal to the aperture of the corresponding lens area.The naked-eye 3D display system of the naked-eye 3D display optical device can ensure that the light rays for 3D display are light rays with relatively small aberration after filtering by the light barrier layer, thereby reducing the influence of the aberration on the 3D display image and improving the definition of the naked-eye 3D display image.

Description

Technical Field

[0001] This application relates to the field of optical technology, specifically to a naked-eye 3D display optical device. Background Technology

[0002] Glasses-free 3D display refers to a display technology that allows users to directly view 3D images from a display source without wearing any auxiliary devices. The principle behind glasses-free 3D display is that the light from the display source is modulated by optical devices, causing the user's left and right eyes to see two images with parallax. This parallax image creates the 3D effect.

[0003] Conventional 3D display devices obtain images with a 3D display effect through lens array processing, such as... Figure 1 As shown, each lens in the lens array modulates the light incident from the display source to emit the modulated light to the human eye, and the image formed by the modulated light appears as a 3D display to the human eye.

[0004] In real-world applications, lenses cannot achieve ideal optical processing effects, resulting in aberrations in the processed light. Furthermore, the larger the angle of incidence, the greater the aberrations produced by the lens. Consequently, conventional 3D display devices suffer from aberrations due to their lens arrays, leading to lower clarity in the 3D images presented to the user. Summary of the Invention

[0005] This application provides a naked-eye 3D display optical device that can solve the problem of low image clarity in conventional naked-eye 3D display systems due to optical device aberrations.

[0006] In a first aspect, embodiments of this application provide a naked-eye 3D display optical device, including an aperture layer and at least one lens array layer, wherein the at least one lens array layer is used to modulate the light for obtaining the 3D display;

[0007] The aperture layer includes light-transmitting areas and light-blocking areas spaced apart;

[0008] Each lens array layer in the at least one lens array layer includes a lens assembly and a filling area, and the lens assembly includes a plurality of lens areas arranged at intervals.

[0009] The light-transmitting area of ​​the aperture layer corresponds one-to-one with the lens area of ​​any lens array layer, and the center point of any light-transmitting area and the center point of the lens area corresponding to that light-transmitting area are on a straight line.

[0010] When the naked-eye 3D display optical device comprises at least two lens array layers, the lens regions in any two lens array layers of the at least two lens array layers correspond one-to-one, and the center points of any corresponding lens regions in all lens array layers are on a straight line.

[0011] The aperture of each light-transmitting region in the light barrier layer is less than or equal to the aperture of the corresponding lens region.

[0012] In some possible embodiments, a spacing layer is arranged between each two adjacent lens array layers of the at least one lens array layer and the light barrier layer.

[0013] In some possible embodiments, the surface shape of each light-transmitting region of the light barrier layer is a plane or a curved surface.

[0014] In some possible embodiments, the lens regions in any lens array layer of the at least one lens array layer are convex towards the side of the human eye or the side opposite to the side of the human eye.

[0015] In some possible embodiments, the sum of the focal lengths of the light-transmitting regions and all lens regions located on the same straight line is greater than 0.

[0016] In some possible embodiments, when each light-transmitting region of the light barrier layer is arranged as a curved surface lens, the concave surface of the curved surface lens of each light-transmitting region is towards the side of the human eye.

[0017] In a second aspect, the embodiments of the present application provide a naked-eye 3D display system, which comprises a naked-eye 3D display optical device and a display source.

[0018] The display source is configured to emit light rays to the naked-eye 3D display optical device.

[0019] The naked-eye 3D display optical device is configured to process the light rays from the display source to obtain light rays for 3D display.

[0020] The naked-eye 3D display optical device is as described in the first aspect or any possible implementation manner of the first aspect.

[0021] In some possible embodiments, a spacing layer is arranged between the naked-eye 3D display optical device and the display source.

[0022] In some possible embodiments, when the naked-eye 3D display optical device comprises one lens array layer, and a spacing layer is arranged between the display source and the lens array layer, the difference between the thickness of the spacing layer and the focal length of the lens region in the lens array layer is less than a preset value.

[0023] In some possible implementation manners, when the naked-eye 3D display optical device comprises a lens array layer, a first interval layer is arranged between the lens array layer and the aperture layer, and a second interval layer is arranged between the display source and the aperture layer, the sum of the thickness of the first interval layer and the thickness of the second interval layer is less than a preset value, and the difference between the focal length of the lens region in the lens array layer is less than the preset value.

[0024] To solve the problem of low image definition of the image displayed by the existing naked-eye 3D display system, the naked-eye 3D display optical device provided by the embodiments of the present application comprises at least one lens array layer for modulating light rays to obtain 3D display and an aperture layer, the aperture layer comprises light-transmitting regions and light-blocking regions arranged at intervals, each lens array layer of the at least one lens array layer comprises a lens assembly and a filling region, and the lens assembly comprises a plurality of lens regions arranged at intervals. In the embodiments of the present application, when the naked-eye 3D display optical device comprises at least two lens array layers, the lens regions in any two lens array layers correspond to each other one by one, and the center points of any corresponding lens regions in all lens array layers are on a straight line. The light-transmitting regions of the aperture layer also correspond to the lens regions of any lens array layer one by one, and the center point of any light-transmitting region and the center point of the lens region corresponding to the light-transmitting region are also on a straight line, and the aperture of each light-transmitting region in the aperture layer is less than or equal to the aperture of the lens region corresponding to the light-transmitting region. In this way, among the light rays incident on the aperture layer, the light rays with relatively large aberration are blocked by the light-blocking regions of the aperture layer, so that the light rays emitted by the light-transmitting regions of the aperture layer are light rays with relatively small aberration among the incident light rays. Based on this, whether the light rays incident on the aperture layer come from the lens array layer or the display source, after being filtered by the aperture layer, the light rays for 3D display are light rays with relatively small aberration, so that the influence of the aberration on the 3D display image can be reduced, and the definition of the 3D display image can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0026] Figure 1 is an exemplary optical path schematic diagram of any lens in the conventional 3D display device provided by the embodiments of the present application;

[0027] Figure 2A is an exemplary structural schematic diagram of the naked-eye 3D display optical device 10 provided by the embodiments of the present application;

[0028] Figure 2B is an exemplary component schematic diagram of the lens array layer 12 provided by the embodiments of the present application;

[0029] Figure 3 FIG. 1 is an exemplary structural schematic diagram of a naked-eye 3D display system 100 provided by an embodiment of the present application;

[0030] Figure 4A FIG. 1 is an exemplary structural schematic diagram of a naked-eye 3D display system 100 provided by an embodiment of the present application;

[0031] Figure 4B FIG. 1 is an exemplary structural schematic diagram of a naked-eye 3D display system 100 provided by an embodiment of the present application;

[0032] Figure 4C FIG. 1 is an exemplary structural schematic diagram of a naked-eye 3D display system 100 provided by an embodiment of the present application;

[0033] Figure 4D FIG. 1 is an exemplary structural schematic diagram of a naked-eye 3D display system 100 provided by an embodiment of the present application; DETAILED DESCRIPTION

[0034] The terms used in the following embodiments of the present application are for the purpose of describing optional implementations, and are not intended to be limiting on the present application. As used in the specification and the appended claims of the present application, the singular forms "a," "an," and "the" are intended to include plural forms as well. It will also be understood that although the terms first, second, etc. can be employed in describing certain objects in the following embodiments, these objects are not limited by these terms. These terms are used to distinguish between objects of a same type. For example, the terms first, second, etc. can be used to describe interval layers in the following embodiments, but the interval layers are not limited by these terms. Other objects of the same type that can be described in the following embodiments using the terms first, second, etc. are not described here.

[0035] The technologies involved in the embodiments of the present application are explained below.

[0036] Aberration refers to the difference between the ideal imaging of an original object and the actual imaging of the original object. In actual implementation, an optical element cannot achieve ideal imaging. Based on this, for the light rays emitted at each angle of the original object, the processing effect of the light rays after processing is different from the ideal case, that is, the optical element causes aberration.

[0037] The embodiments of the present application provide a naked-eye 3D display optical device and a naked-eye 3D display system. By setting a diaphragm layer, light rays with relatively large aberration can be filtered, so as to ensure that light rays with relatively small aberration enter the human eye, thereby reducing the influence of aberration on the 3D display image and improving the clarity of the 3D display image.

[0038] The technical solutions of the embodiments of the present application are described below with examples.

[0039] Referring to Figure 2A , Figure 2A An eye 3D display optical device 10 is shown, which is, for example, a light processing component of an eye 3D display system. The eye 3D display optical device 10 can include an aperture layer 11 and at least one lens array layer 12 for modulating light rays to obtain a 3D display, the aperture layer 11 including spaced-apart light-transmitting regions 11A and light-blocking regions 11B, and each of the at least one lens array layer including lens components 12A and filling regions 12B, the lens components 12A including a plurality of spaced-apart lens regions 121, wherein the lens regions 121 are used to modulate light rays to obtain a 3D display.

[0040] In actual implementation scenarios, if the eye 3D display optical device 10 includes at least two lens array layers 12, the lens regions of any two lens array layers of the at least two lens array layers 12 correspond one-to-one, and the center points of any corresponding lens regions in all lens array layers are on a straight line. The light-transmitting regions 11A of the aperture layer 11 correspond one-to-one to the lens regions 121 of any lens array layer, and the center points of any light-transmitting region and the center points of the lens regions corresponding to the light-transmitting region are also on a straight line. The straight line is perpendicular to the end surface of the aperture layer 11 or any lens array layer. That is, the center point of any light-transmitting region 11A of the aperture layer 11 and the center points of the lens regions 121 corresponding to the light-transmitting region 11A in all lens array layers 12 are on a straight line.

[0041] Further, the aperture of the light-transmitting region 11A and the aperture of the lens region 121 can be millimeter (mm) level. In some embodiments, the aperture of any light-transmitting region 11A in the aperture layer 11 is smaller than the aperture of the lens region 121 corresponding to the light-transmitting region 11A, for example, the aperture of the light-transmitting region 11A is 0.18 mm, the aperture of the lens region 121 is 0.27 mm, and the center distance between two adjacent lens regions in the same lens array layer is 0.9 mm or 0.27 mm. In other embodiments, the aperture of any light-transmitting region 11A in the aperture layer 11 is equal to the aperture of the lens region 121 corresponding to the light-transmitting region 11A, for example, the aperture of the light-transmitting region 11A and the aperture of the lens region 121 are both 0.27 mm, and the center distance between two adjacent lens regions in the same lens array layer is 0.9 mm.

[0042] It can be seen that, in the naked-eye 3D display optical device according to the implementation scheme, the center point of any light-transmitting region of the diaphragm layer is on a straight line with the center point of the lens region in the lens array layer corresponding to the light-transmitting region, so that the light to be displayed should be emitted through the lens region of at least one lens array layer and the light-transmitting region of the diaphragm layer. In view of the fact that the aperture of the light-transmitting region of the diaphragm layer is smaller than or equal to the aperture of the corresponding lens region, among the light incident on the diaphragm layer, the light that has relatively large aberration is blocked by the light-blocking region of the diaphragm layer (for example, the light that has relatively large aberration is blocked by the light-blocking region of the diaphragm layer in any one of the lens array layers shown in Figure 4A or Figure 4C the schematic light path), so that it can be ensured that the light emitted by the light-transmitting region of the diaphragm layer is light that has relatively small aberration among the incident light. It can be seen that, in the naked-eye 3D display optical device according to the implementation scheme, the light emitted by the diaphragm layer is light that has relatively small aberration, so that the influence of the aberration on the 3D display image can be reduced and the definition of the 3D display image can be improved.

[0043] For example, the light-blocking region 11B of the diaphragm layer 11 can be implemented by a light-blocking material (for example, a light-blocking material that is completely black) or a light-blocking coating, and the surface shape of each light-transmitting region 11A of the diaphragm layer 11 is a plane or a curved surface, that is, the light-transmitting region 11A can be provided as a hole, a plane lens or a curved lens. Optionally, when the light-transmitting region 11A is partially provided as a curved lens, the surface shapes of the curved lenses of the diaphragm layer 11 are basically the same, and the concave surfaces of the curved lenses of each light-transmitting region are all directed toward the human eye side.

[0044] For example, referring to Figure 2B , Figure 2B the composition of the lens array layer 12 is shown in Figure 2B each lens assembly 12A of at least one lens array layer 12 can be implemented as an integral component including a plurality of lens regions. The filling region 12B can be implemented as an integral component (that is, a solid filling medium) with a shape matched with the lens assembly 12A or air (that is, no solid filling medium). When the filling region 12B is implemented as a solid filling medium and the filling region 12B is matched with the lens assembly 12A, the convex lens part of the lens assembly 12A can be matched with the concave part of the filling region 12B, so that a gapless match can be obtained between the matched part of the lens assembly 12A and the filling region 12B (for example, the lens array layer shown in any one of Figure 4A to Figure 4D ).

[0045] It should be noted that the lens array layer 12 described above in conjunction with Figure 2B is only one illustrative implementation of the present application, and does not limit the lens array layer of the embodiments of the present application. In other implementations of the present application, if Figure 2BIf the medium shown in 12B is a solid medium, then in this example, the medium shown in 12B can also be used as the lens assembly, and the medium shown in 12A can be used as the filling area.

[0046] The lens array layer 12 is used to modulate the light for 3D display. Therefore, any lens array layer satisfies the following characteristic: the sum of the focal length of the center point of any lens area of the lens array layer and the focal length of the filling area of the lens array layer is greater than 0 in the direction perpendicular to the end surface of the lens array layer.

[0047] In some embodiments, the lens areas in the lens assembly 12A can be arranged without gaps, i.e., the aperture of each lens area is N, N is greater than 0, and the center-to-center distance between two adjacent lens areas is N. In other embodiments, the lens areas in the lens assembly 12A can be arranged with a certain distance, i.e., the aperture of each lens area is N, and the center-to-center distance between two adjacent lens areas is greater than N.

[0048] Optionally, the lens area in any lens array layer can be a one-dimensional linear lens unit (e.g., a cylindrical lens unit) or a two-dimensional lens unit (e.g., a circular lens unit or a square lens unit), which is not limited in the embodiments of the present application.

[0049] It should be noted that for any lens array layer, when the lens assembly of the lens array layer is implemented as Figure 2B In 12A, the filling area of the lens array layer is implemented as Figure 2B In 12B, to satisfy the optical characteristics of 3D display, the refractive index of the lens assembly in the lens array layer is greater than the refractive index of the filling area. For example, the refractive index of the lens assembly is greater than 1, and the refractive index of the filling area is greater than or equal to 1. For example, the refractive index of the lens assembly is 1.61, and the refractive index of the filling area is 1.43 or 1.

[0050] In some embodiments, the convex surface of the lens area 121 in any lens array layer of the at least one lens array layer 12 can face the side of the human eye. In other embodiments, the convex surface of the lens area 121 in any lens array layer of the at least one lens array layer 12 can face the side opposite to the side of the human eye.

[0051] In the above embodiments, the sum of the focal length of the light transmission area 11A and the focal length of the lens area 121 is greater than 0, regardless of the shape of the light transmission area 11A of the light barrier layer 11 and the direction of the convex surface of the lens area 121 in any lens array layer of the at least one lens array layer.

[0052] Optionally, when the filling area of all lens array layers in the naked-eye 3D display optical device 10 is air, the optical device with the center point of any light-transmitting area on the same straight line is the lens area of each lens array layer, and in this implementation scenario, the sum of the focal lengths of the light-transmitting area and all the lens areas with the center point on the same straight line is greater than 0. When at least one lens array layer includes a lens array layer with a filling area of a solid optical medium, the filling area in the lens array layer can wrap the lens area in the lens array layer, and in this implementation scenario, the filling area with the center point of any light-transmitting area of the light barrier layer on the same straight line is also included, and correspondingly, the sum of the focal lengths of the light-transmitting area, all the lens areas, and the filling area on the straight line with the center point on the same straight line is greater than 0.

[0053] Again referring to Figure 2A Optionally, the light barrier layer 11 and at least one of the adjacent two lens array layers 12 are provided with a spacing layer 13. Optionally, the material of the spacing layer 13 can be a single refractive index material or a composite material of multiple different refractive index materials. The multiple different refractive index materials can include ultraviolet rays (UV) glue, polycarbonate (PC), polyethylene glycol terephthalate (PET), polymethyl methacrylate (PMMA), air, and the like, which are not limited in the embodiments of the present application.

[0054] In the embodiments of the present application, the vertical distance from one layer to another layer contacted by the spacing layer is defined as the "thickness" of the spacing layer, and the "thickness of the spacing layer" referred to in the following of the specification is the meaning, which is not repeated in the following of the specification.

[0055] For example, the thickness of the spacing layer between the light barrier layer 11 and any adjacent lens array layer of the light barrier layer 11 is 70 μm.

[0056] It should be noted that the spacing layer 13 is arranged to ensure the display performance of the exiting light of the naked-eye 3D display optical device 10, and therefore, the thickness of the spacing layer 13 is related to the aberration of the naked-eye 3D display optical device 10. For example, the focal length of the lens area in each lens array layer, the size of the aperture of the light-transmitting area 11A, and the aberration of each lens area in at least one lens array layer 12 determine the thickness of the spacing layer 13. Specifically, the thickness of the spacing layer 13 can be flexibly deployed according to the actual implementation scenario, which is not limited in the embodiments of the present application.

[0057] It can be understood that Figure 2A is only a schematic representation and does not constitute a limitation on the naked-eye 3D display optical device of the present application. AlthoughFigure 2A The light barrier layer in the above embodiment is an optical element layer arranged at the edge of the naked-eye 3D display optical device, but in actual implementation scenarios, the positional relationship between the light barrier layer and the at least one lens array layer can be flexibly deployed according to requirements. For example, in another embodiment of the present application, the naked-eye 3D display optical device includes, for example, a light barrier layer and two lens array layers, and the light barrier layer is arranged, for example, between the two lens array layers. The present application does not exemplify one by one here.

[0058] Referring to Figure 3 , Figure 3 Fig. 1 schematically illustrates a naked-eye 3D display system 100 (hereinafter referred to as system 100), which includes a naked-eye 3D display optical device 110 and a display source 120. The display source 120 is configured to emit light rays to the naked-eye 3D display optical device 110, and the display source 120 provides, for example, a 3D light field encoded image. The naked-eye 3D display optical device 110 can be the naked-eye 3D display optical device 10 as described in the above embodiment, and is configured to process the light rays from the display source 120 to obtain light rays for 3D display, so that the light rays can present a 3D displayed image to a user after being incident on a human eye.

[0059] It can be understood that Figure 3 The structure illustrated does not constitute a specific limitation on the naked-eye 3D display system. In another embodiment of the present application, the naked-eye 3D display system can include more or fewer optical elements than those illustrated, and the embodiments of the present application do not limit this.

[0060] As can be known from the above description of the naked-eye 3D display optical device, the naked-eye 3D display system of the embodiment of the present application adopts the naked-eye 3D display optical device provided with the light barrier layer. Since each light transmission area of the light barrier layer corresponds to a lens area in the at least one lens array layer one by one, and the aperture of each light transmission area in the light barrier layer is less than or equal to the aperture of the corresponding lens area, among the light rays incident on the light barrier layer of the naked-eye 3D display optical device, the light rays with relatively large aberrations are blocked by the light shielding areas of the light barrier layer, so that the light rays emitted by the light transmission areas of the light barrier layer are the light rays with relatively small aberrations. Based on this, in the naked-eye 3D display system of the embodiment of the present application, whether the light rays incident on the light barrier layer come from the lens array layer or the display source, after being filtered by the light barrier layer, the light rays for 3D display are the light rays with relatively small aberrations, so that the influence of the aberrations on the 3D displayed image can be reduced, and the clarity of the 3D displayed image can be improved.

[0061] Optionally, in the case that the naked-eye 3D display optical device 110 is fixed and unchanged, the display source 120 can be arranged, for example, in the form of a display screen, and the display screen is arranged, for example, on the side of the naked-eye 3D display optical device 110 away from the user. In this case, the display source 120 can be a display screen of a mobile phone, a tablet computer, a computer, a television, or the like. Figure 3The schematic is disposed on the lower side of the naked eye 3D display optical device 110, and can also be disposed on the upper side of the naked eye 3D display optical device 110. Of course, in the case of being disposed on the upper side of the naked eye 3D display optical device 110, the light-emitting surface of the display source 120 faces the naked eye 3D display optical device 110. Based on this, in combination with the foregoing description of the naked eye 3D display optical device, in some embodiments, the display source 120 can be adjacent to the diaphragm layer of the naked eye 3D display optical device 110, and the light-emitting surface of the display source 120 faces the diaphragm layer of the naked eye 3D display optical device 110 (for example Figure 4C and Figure 4D Schematic example). In other embodiments, the display source 120 can be adjacent to the lens array layer of the naked eye 3D display optical device 110, and the light-emitting surface of the display source 120 faces the lens array layer adjacent to the display source 120 (for example Figure 4A and Figure 4B Schematic example).

[0062] Again referring to Figure 3 , for example, a spacing layer 130 can be disposed between the naked eye 3D display optical device 110 and the display source 120. The composition medium of the spacing layer 130 can refer to the composition medium of the spacing layer 13 in the above-mentioned embodiments, and details are not described here.

[0063] Optionally, the focal length of the light path channel in the naked eye 3D display optical device 110 and the distance between the spacing layer 130 and the lens array layer in the naked eye 3D display optical device 110 determine the thickness of the spacing layer 130. That is, when the display source 120 is adjacent to the lens array layer, the thickness of the spacing layer 130 is different from when the display source 120 is adjacent to the diaphragm layer. Details are described in the following embodiments.

[0064] The following takes the naked eye 3D display optical device 110 including one lens array layer as an example to introduce the naked eye 3D display system of the embodiments of the present application.

[0065] Referring to Figure 4A , Figure 4AAn eye 3D display system 1000 is illustrated, which includes an aperture layer 1001, a first spacer layer 1002, a lens array layer 1003, a second spacer layer 1004 and a display source 1005. The eye 3D display optics in the system 1000 includes the aperture layer 1001, the first spacer layer 1002 and the lens array layer 1003. The display source 1005 is disposed on one side of the lens array layer 1003, and the second spacer layer 1004 is disposed between the display source 1005 and the lens array layer 1003. The display source 1005 emits light rays towards the lens array layer 1003, so that the eye 3D display optics in the system 1000 processes the emitted light rays, and thus the user can see the 3D displayed image in the direction of the emitted light rays of the aperture layer 1001, which is the image displayed by the display source 1005 in 3D display effect, such as Figure 4A The optical path is illustrated.

[0066] The material of the first spacer layer 1002 and the material of the second spacer layer 1004 are as described in the above embodiment, which will not be repeated here. The difference between the thickness of the second spacer layer 1004 and the focal length of the lens region in the lens array layer 1003 can be less than a preset value.

[0067] It should be noted that, in an ideal state, the thickness of the second spacer layer 1004 should ensure that the display source is located at the focal plane of the lens array layer 1003. However, in actual implementation scenarios, it is difficult to make the thickness of the second spacer layer 1004 to be exactly equal to the focal length of the lens array layer 1003. Based on this, in the eye 3D display system illustrated in the embodiment of the present application, the difference between the thickness of the second spacer layer 1004 and the focal length of the lens region in the lens array layer 1003 can be less than a preset value, and the value range of the preset value should ensure that the corresponding eye 3D display system meets the optical imaging requirements.

[0068] Again referring to Figure 4A The aperture layer 1001 includes spaced apart light transmission regions and light blocking regions, and the light blocking regions are, for example, black opaque materials, and the light transmission regions are, for example, holes spaced apart on the black opaque materials. The aperture of each light transmission region is, for example, 0.18 mm. The lens array layer 1003 includes lens assemblies and filling regions, and the lens assembly includes a plurality of lens regions with the same shape and corresponding to the light transmission regions of the aperture layer 1001 one by one. The center of each lens region is aligned with the center of the corresponding light transmission region, and the aperture of each lens region is, for example, 0.27 mm. The center-to-center distance between two adjacent lens regions in the same lens array layer is 0.9 mm or 0.27 mm. In this example, the lens regions in the lens assembly have convex surfaces facing the display source 1005.

[0069] It can be understood that the above Figure 4AThis is merely an illustrative description and does not constitute a limitation on the glasses-free 3D display system involved in this application. In other embodiments of this application, the structural relationship between the display source and the glasses-free 3D display optics in the glasses-free 3D display system may be different, and the orientation of the convex surface of the lens area in the lens array layer may also be different, etc.

[0070] For example, such as Figure 4B The naked-eye 3D display system 2000 shown (hereinafter referred to as system 2000) includes an aperture layer 2001, a first spacer layer 2002, a lens array layer 2003, a second spacer layer 2004, and a display source 2005. The structure, composition, and function of the aperture layer 2001, the first spacer layer 2002, the second spacer layer 2004, and the display source 2005 in system 2000 can be referred to in the description of the aperture layer 1001, the first spacer layer 1002, the second spacer layer 1004, and the display source 1005 in system 1000, respectively. These details are not elaborated here in the embodiments of this application.

[0071] For example, the convex surfaces of the lens regions included in the lens array layer 2003 in system 2000 all face the direction of the aperture layer 2001.

[0072] For example, the spacing between adjacent lens areas in system 2000 is 1.7 mm, the aperture of the lens area is, for example, 0.5 mm, and the aperture of the light-transmitting area in aperture layer 2001 is, for example, 0.5 mm or 0.3 mm.

[0073] Understandably, although Figure 4B The optical path of the naked-eye 3D display system is not shown, but... Figure 4B The optical path of the illustrated system 2000 is... Figure 4A The similarity shown, and can be based on Figure 4A The illustrated optical path is logically derived.

[0074] Figure 4A and Figure 4B Two exemplary glasses-free 3D display systems are illustrated, one with the display source positioned on one side of the lens array layer. In other embodiments, the display source may also be positioned on one side of the aperture layer.

[0075] See Figure 4C , Figure 4C This application provides a naked-eye 3D display system 3000 (hereinafter referred to as system 3000). System 3000 includes a lens array layer 3001, a first spacer layer 3002, an aperture layer 3003, a second spacer layer 3004, and a display source 3005 arranged sequentially. In this example, the display source 3005 is disposed on one side of the aperture layer 3003, and the second spacer layer 3004 is disposed between the display source 3005 and the aperture layer 3003. The display source 3005 emits light towards the aperture layer 3003.

[0076] The structure, composition and function of the lens array layer 3001 and the aperture layer 3003 in the system 3000 can correspond to the lens array layer 1003 and the aperture layer 1001 in the system 1000 respectively, and will not be described here. Alternatively, the size relationship between the aperture of the lens area in the lens array layer 3001 and the aperture of the light-transmitting area in the aperture layer 3003 can be as described in the system 1000 or as described in the system 2000.

[0077] It should be pointed out that, in order to meet the optical characteristics of 3D display, the difference between the sum of the thickness of the first spacing layer 3002 and the thickness of the second spacing layer 3004 and the focal length of the lens area in the lens array layer 3001 is less than a preset value. The preset value is as described in the foregoing embodiments.

[0078] For another example, referring to Figure 4D , Figure 4D The system 4000 provided by the embodiments of the present application (hereinafter referred to as the system 4000) includes a lens array layer 4001, a first spacing layer 4002, an aperture layer 4003, a second spacing layer 4004 and a display source 4005 arranged in sequence. The convex surface of the lens area in the lens array layer 4001 faces the convex surface as shown in the lens area of the lens array layer 2003 in the system 2000. The structural relationship between the lens array layer 4001 and the aperture layer 4003, the structural relationship between the display source 4005 and the aperture layer 4003 and the second spacing layer 4004, and the relationship between the thickness of the first spacing layer 4002, the thickness of the second spacing layer 4004 and the focal length of the lens area in the lens array layer 4001 can be referred to the related description in the system 3000, and will not be described here.

[0079] It can be understood that, although Figure 4D does not show the optical path of the naked-eye 3D display system, the optical path of the system 4000 shown in Figure 4D is similar to that shown in Figure 4C , and can be reasonably derived according to the optical path shown in Figure 4C .

[0080] It should be pointed out that, in the naked-eye 3D display optical device included in the naked-eye 3D display system shown in Figure 4A to Figure 4D , the function, optical characteristics of each optical element and the relationship between each optical element all meet the description of the corresponding embodiment of the naked-eye 3D display optical device 10. For example, Figure 4A to Figure 4D In the lens array layer shown in Figure 4A to Figure 4DOther conditions that the naked-eye 3D display optical device satisfies can be found in the description of the above embodiments, which will not be described here again.

[0081] In addition, Figure 4A to Figure 4D The naked-eye 3D display optical device and the naked-eye 3D display system described in the embodiments of the present application are not limited to the example that the naked-eye 3D display optical device includes one lens array layer. In some other embodiments of the present application, the naked-eye 3D display optical device can include more optical elements, for example, the naked-eye 3D display optical device includes at least two lens array layers. In some other embodiments of the present application, the light transmission area of the light barrier layer can be a curved lens, etc. The embodiments of the present application will not be described one by one here.

[0082] In summary, the naked-eye 3D display optical device provided in the embodiments of the present application includes at least one lens array layer and a light barrier layer, the light barrier layer includes spaced light transmission areas and light blocking areas, each lens array layer of the at least one lens array layer for modulating light rays to obtain 3D display includes a lens assembly and a filling area, the lens assembly includes a plurality of spaced lens areas. In the embodiments of the present application, when the naked-eye 3D display optical device includes at least two lens array layers, the lens areas in any two lens array layers correspond to each other one by one, and the center points of any corresponding lens areas in all lens array layers are on a straight line. The light transmission areas of the light barrier layer also correspond to the lens areas of any lens array layer one by one, and the center points of any light transmission area and the center points of the lens areas corresponding to the light transmission area are also on a straight line, and the aperture of each light transmission area in the light barrier layer is less than or equal to the aperture of the lens area corresponding to the light transmission area. In this way, among the light rays incident on the light barrier layer, the light rays with relatively large aberrations are blocked by the light blocking areas of the light barrier layer, so that the light rays emitted by the light transmission areas of the light barrier layer are light rays with relatively small aberrations among the incident light rays. Based on this, the naked-eye 3D display system applying the embodiments of the present application can ensure that the light rays for 3D display are light rays with relatively small aberrations, whether the light rays incident on the light barrier layer come from the lens array layer or from the display source, after filtering by the light barrier layer, thereby reducing the influence of aberrations on the 3D display image and improving the clarity of the 3D display image.

[0083] Each part of the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other. Each embodiment focuses on the difference from other embodiments, and the related parts can be referred to the description of the method embodiments.

[0084] While the preferred embodiments of the application have been described, additional variations and modifications can be made to these embodiments by those skilled in the art once they have the benefit of the present disclosure without departing from the spirit and scope of the application. Accordingly, it is intended that such additions and modifications be included within the scope of the application. It is the following claims, including any amendments thereto, which define the scope of the application.

[0085] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A naked-eye 3D display optical device, characterized by, The naked-eye 3D display optical device comprises a light barrier layer and at least one lens array layer, the at least one lens array layer is used for modulating light rays to obtain 3D display; The light barrier layer comprises spaced light transmission areas and light shielding areas; Each lens array layer of the at least one lens array layer comprises a lens assembly and a filling area, the lens assembly comprises a plurality of spaced lens areas; The light transmission area of the light barrier layer corresponds to the lens area of any lens array layer, and the center point of any light transmission area and the center point of the lens area corresponding to the light transmission area are on a straight line; When the naked-eye 3D display optical device comprises at least two lens array layers, the lens areas in any two lens array layers of the at least two lens array layers correspond to each other, and the center points of any corresponding lens areas in all lens array layers are on a straight line; The aperture of each light transmission area of the light barrier layer is less than or equal to the aperture of the corresponding lens area; The aperture of each light transmission area is 0.18 mm; The aperture of each lens area is 0.27 mm, and the center distance between adjacent two lens areas in the same lens array layer is 0.9 mm or 0.27 mm; The sum of the focal lengths of the light transmission areas and all lens areas whose center points are on the same straight line is greater than 0; The light barrier layer and the at least one lens array layer are provided with a spacing layer between any two adjacent layers; The thickness of the spacing layer between the light barrier layer and any adjacent lens array layer is 70 μm; The surface shape of each light transmission area of the light barrier layer is a plane or a curved surface; The convex surface of the lens area contained in any lens array layer of the at least one lens array layer faces the human eye side or the side opposite to the human eye side; When each light transmission area of the light barrier layer is provided as a curved surface lens, the concave surface of the curved surface lens of each light transmission area faces the human eye side.

2. An autostereoscopic 3D display system characterized by The system comprises a naked-eye 3D display optical device and a display source; The display source is used for emitting light rays to the naked-eye 3D display optical device; The naked-eye 3D display optical device is used for processing the light rays from the display source to obtain light rays in 3D display; The naked-eye 3D display optical device is as described in claim 1.

3. The naked-eye 3D display system of claim 2, wherein, A spacing layer is arranged between the naked-eye 3D display optical device and the display source.

4. The naked-eye 3D display system according to claim 2 or 3, wherein, When the naked-eye 3D display optical device comprises one lens array layer, and a spacing layer is arranged between the display source and the lens array layer, the difference between the thickness of the spacing layer and the focal length of the lens area in the lens array layer is less than a preset value.

5. The naked-eye 3D display system according to claim 2 or 3, wherein, When the naked-eye 3D display optical device comprises one lens array layer, a first spacing layer is arranged between the light barrier layer and the lens array layer, and a second spacing layer is arranged between the display source and the light barrier layer, the sum of the thickness of the first spacing layer and the thickness of the second spacing layer is less than the difference between the focal length of the lens area in the lens array layer and a preset value.

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