CN114660824A - Naked eye 3D display optical device - Google Patents

Abstract

The embodiment of the application relates to the field of optical display, and discloses a naked eye 3D display optical device and a naked eye 3D display system. This bore hole 3D shows optical device includes diaphragm layer and at least one lens array layer, and the diaphragm layer is including the printing opacity district and the shading area that the interval set up, and every lens array layer includes the lens subassembly in at least one lens array layer, and the lens subassembly includes the lens district that a plurality of intervals set up. The light transmission areas of the diaphragm layer correspond to the lens areas of any lens array layer one by one, and the caliber of each light transmission area in the diaphragm layer with the central point on a straight line is smaller than or equal to the caliber of the corresponding lens area of the light transmission area. By adopting the naked eye 3D display system of the naked eye 3D display optical device, through the filtering of the diaphragm layer, the light rays which are displayed in the 3D mode can be ensured to be the 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 naked eye 3D display image is improved.

Description

Naked eye 3D display optical device

Technical Field

The embodiment of the application relates to the technical field of optics, in particular to a naked eye three-dimensional (3D) display optical device.

Background

The naked eye 3D display refers to a display technology that a user can directly view an image with a 3D display effect on a display source under the condition that the user does not wear any auxiliary equipment. The principle of naked eye 3D display is that light from a display source is modulated by an optical device, and then two images with parallax are seen by the left and right eyes of a user, and the parallax images enable the user to see images with 3D display effect.

The conventional 3D display device obtains an image exhibiting a 3D display effect through a lens array process, as shown in fig. 1, each lens in the lens array modulates light incident from a display source to emit the modulated light to human eyes, and the image formed by the modulated light appears to the human eyes as a 3D display effect.

In an actual implementation scenario, the lens cannot achieve an ideal optical processing effect, so that the processed light rays generally have a certain aberration, and the aberration generated by the lens is larger for the incident light with the larger incident angle. Based on this, the conventional 3D display apparatus generates aberration due to the lens array, resulting in a low definition of a 3D display image presented to a user.

Disclosure of Invention

The embodiment of the application provides a naked eye 3D display optical device, which can solve the problem that the image definition of 3D display is low due to the aberration of the optical device in a conventional naked eye 3D display system.

In a first aspect, an embodiment of the present application provides an optical device for naked-eye 3D display, including a diaphragm layer and at least one lens array layer, where the at least one lens array layer is used to modulate light rays for obtaining 3D display;

the diaphragm layer comprises a light transmitting area and a light shading area which are arranged at intervals;

each lens array layer in the at least one lens array layer comprises a lens assembly and a filling area, and the lens assembly comprises a plurality of lens areas which are arranged at intervals;

the light transmission areas of the diaphragm layer correspond to the lens areas of any lens array layer one by one, and the central point of any light transmission area and the central point of the lens area corresponding to the light transmission area are on the same straight line;

when the naked eye 3D display optical device comprises at least two lens array layers, lens areas in any two lens array layers of the at least two lens array layers are in one-to-one correspondence, and the central points of any corresponding lens areas in all the lens array layers are on the same straight line;

the aperture of each light-transmitting area in the diaphragm layer is smaller than or equal to the aperture of the lens area corresponding to the light-transmitting area.

In some possible embodiments, a spacer layer is disposed between adjacent two of the aperture layer and the at least one lens array layer.

In some possible embodiments, the surface shape of each light-transmitting area of the diaphragm layer is a plane or a curved surface.

In some possible embodiments, any one of the at least one lens array layer includes a lens region convex surface facing a human eye side or a side opposite to the human eye side.

In some possible embodiments, the sum of the focal lengths of the light-transmitting regions and all the lens regions, the central points of which are located on the same straight line, is greater than 0.

In some possible embodiments, when each light-transmitting area of the diaphragm layer is configured as a curved lens, a concave surface of the curved lens of each light-transmitting area faces a human eye side.

In a second aspect, embodiments of the present application provide a naked eye 3D display system, the system including 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 optics are as described in the first aspect or any one of the possible embodiments of the first aspect.

In some possible embodiments, a spacer layer is disposed between the naked eye 3D display optics and the display source.

In some possible embodiments, when the naked-eye 3D display optical device includes a lens array layer and a spacer layer is disposed between the display source and the lens array layer, a difference between a thickness of the spacer layer and a focal length of a lens region in the lens array layer is smaller than a preset value.

In some possible embodiments, when the naked-eye 3D display optical device includes a lens array layer, a first spacer layer is disposed between the stop layer and the lens array layer, and a second spacer layer is disposed between the display source and the stop layer, a difference between a sum of a thickness of the first spacer layer and a thickness of the second spacer layer and a focal length of a lens region in the lens array layer is smaller than a preset value.

In order to solve the problem that the image definition displayed by the existing naked eye 3D display system is low, the naked eye 3D display optical device provided by the embodiment of the application comprises at least one lens array layer and a diaphragm layer, wherein the lens array layer and the diaphragm layer are used for modulating light rays for obtaining 3D display, the diaphragm layer comprises a light transmitting area and a light shading area which are arranged at intervals, each lens array layer in the at least one lens array layer comprises a lens assembly and a filling area, and the lens assembly comprises a plurality of lens areas which are arranged at intervals. In the embodiment of the application, when the naked eye 3D display optical device comprises at least two lens array layers, the lens areas in any two lens array layers correspond to each other one by one, and the central points of any corresponding lens area in all the lens array layers are on the same straight line. The light transmission areas of the diaphragm layer correspond to the lens areas of any lens array layer one by one, the central point of any light transmission area and the central point of the lens area corresponding to the light transmission area are also on the same straight line, and the caliber of each light transmission area in the diaphragm layer is smaller than or equal to the caliber of the lens area corresponding to the light transmission area. Therefore, among the light rays entering the diaphragm layer, the light rays which can generate relatively large aberration are shielded by the shading area of the diaphragm layer, so that the light rays emitted from the light transmitting area of the diaphragm layer are the light rays which can generate relatively small aberration in the incident light rays. Based on this, no matter the light that incides the diaphragm layer is from the lens array layer, or from the display source, through the filtration of diaphragm layer, the light that all can ensure to be 3D demonstration is the light that the aberration is less relatively to can reduce the influence of aberration to 3D display image, improve 3D display image's definition.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is an exemplary optical path schematic diagram of any lens in a conventional 3D display device provided by an embodiment of the present application;

fig. 2A is an exemplary structural schematic diagram of the naked-eye 3D display optical device 10 provided in the embodiment of the present application;

fig. 2B is a schematic diagram of an exemplary composition of the lens array layer 12 provided in the embodiments of the present application;

fig. 3 is an exemplary structural diagram of the naked-eye 3D display system 100 provided in the embodiment of the present application;

fig. 4A is an exemplary structural diagram of a naked eye 3D display system 1000 provided in an embodiment of the present application;

fig. 4B is an exemplary structural diagram of the naked-eye 3D display system 2000 provided in the embodiment of the present application;

fig. 4C is an exemplary structural diagram of a naked eye 3D display system 3000 provided in an embodiment of the present application;

fig. 4D is an exemplary structural schematic diagram of a naked eye 3D display system 4000 provided in an embodiment of the present application.

Detailed Description

The terminology used in the following examples of the present application is for the purpose of describing alternative embodiments and is not intended to be limiting of the present application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well. It should also be understood that although the terms first, second, etc. may be used in the following embodiments to describe a class of objects, the objects are not limited to these terms. These terms are used to distinguish between particular objects of that class of objects. For example, the terms first, second, etc. may be used in the following embodiments to describe the spacer layer, but the spacer layer should not be limited to these terms. The following embodiments may adopt the terms first, second, etc. to describe other class objects in the same way, and are not described herein again.

The techniques involved in the embodiments of the present application are explained below.

Aberration, which refers to the difference between an ideal image of the original object and the actual image of the original object. In practical implementation, the optical element cannot realize ideal imaging, and based on this, for the outgoing light rays of the original object at various angles, the processing effect corresponding to the light rays obtained after processing is different from that in an ideal case, that is, the optical element brings aberration.

The embodiment of the application provides a bore hole 3D shows optical device and bore hole 3D display system, through setting up the diaphragm layer, can filter the light that produces great aberration to ensure to produce the relative less light entering people's eye of aberration, thereby can reduce the aberration and show the influence of image to 3D, improve the definition that 3D shows the image.

The technical solutions of the embodiments of the present application are described below with reference to examples.

Referring to fig. 2A, fig. 2A illustrates a naked eye 3D display optic 10, the naked eye 3D display optic 10 being, for example, a light handling component of a naked eye 3D display system. The naked-eye 3D display optical device 10 may include a diaphragm layer 11 and at least one lens array layer 12 for modulating light rays for obtaining 3D display, the diaphragm layer 11 includes a light-transmitting area 11A and a light-shielding area 11B which are arranged at intervals, each lens array layer in the at least one lens array layer includes a lens assembly 12A and a filling area 12B, the lens assembly 12A includes a plurality of lens areas 121 which are arranged at intervals, wherein the lens areas 121 are used for modulating light rays for obtaining 3D display.

In an actual implementation scenario, if the naked-eye 3D display optical device 10 includes at least two lens array layers 12, lens areas of any two lens array layers of the at least two lens array layers 12 correspond to each other one by one, and center points of any corresponding lens areas of all lens array layers are on a same straight line. The light transmission areas 11A of the diaphragm layer 11 correspond to the lens areas 121 of any one of the lens array layers one by one, and the center point of any light transmission area and the center point of the lens area corresponding to the light transmission area are also on the same straight line. The straight line is perpendicular to the end face of the stop layer 11 or any of the lens array layers. That is, the center point of any one of the transparent areas 11A of the aperture layer 11 is aligned with the center point of the lens area 121 corresponding to the transparent area 11A in all the lens array layers 12.

Further, the aperture of the light-transmitting region 11A and the aperture of the lens region 121 may be on the millimeter (mm) scale. In some embodiments, the aperture of any one of the transparent areas 11A in the aperture layer 11 is smaller than the aperture of the corresponding lens area 121 of the transparent area 11A, for example, the aperture of the transparent area 11A is 0.18mm, the aperture of the lens area 121 is 0.27mm, and the center-to-center distance between two adjacent lens areas in the same lens array layer is 0.9mm or 0.27 mm. In other embodiments, the aperture of any one of the transparent areas 11A in the aperture layer 11 is equal to the aperture of the corresponding lens area 121 of the transparent area 11A, for example, the aperture of the transparent area 11A and the aperture of the lens area 121 are both 0.27mm, and the center-to-center distance between two adjacent lens areas in the same lens array layer is 0.9 mm.

Therefore, by adopting the naked eye 3D display optical device of the implementation scheme, the central point of any light transmission area of the diaphragm layer is in the same straight line with the central point of the lens area corresponding to the light transmission area in all the lens array layers, so that light to be displayed is emitted through the lens area of at least one lens array layer and the light transmission area of the diaphragm layer. In view of the fact that the aperture of the light-transmitting area of the aperture layer is smaller than or equal to the aperture of the corresponding lens area, light rays which generate relatively large aberration among light rays incident to the aperture layer are all blocked by the light-blocking area of the aperture layer (such as the light path illustrated in fig. 4A or 4C), so that light rays emitted from the light-transmitting area of the aperture layer are light rays which generate relatively small aberration among the incident light rays. Therefore, according to the naked eye 3D display optical device in the technical scheme, the light rays displayed in the 3D mode can be ensured to be the light rays with relatively small aberration through the filtering of the diaphragm layer, so that the influence of the aberration on the 3D display image can be reduced, and the definition of the 3D display image is improved.

For example, the light-shielding region 11B of the aperture layer 11 may be made of an opaque material (e.g., a pure black opaque material) or an opaque paint, and the surface of each light-transmitting region 11A of the aperture layer 11 is a plane or a curved surface, i.e., the light-transmitting region 11A may be configured as a hole, a plane lens or a curved lens. Alternatively, when the light-transmitting area 11A is partially configured as a curved lens, the surface types of the curved lenses of the diaphragm layer 11 are substantially the same, and the concave surface of the curved lens of each light-transmitting area faces the human eye side.

Illustratively, referring to fig. 2B, fig. 2B illustrates the composition of the lens array layers 12, and as shown in fig. 2B, the lens assembly 12A of each of the at least one lens array layers 12 may be implemented as a unitary component including a plurality of lens regions. Fill region 12B may be implemented as a unitary component configured to interfit with lens assembly 12A (i.e., with a solid fill medium), or alternatively, air (i.e., without a solid fill medium). When filling area 12B is implemented as a solid filling medium and filling area 12B and lens element 12A are attached to each other, the convex lens portions of lens element 12A can fit into the concave portions of filling area 12B, so that a gapless fit between lens element 12A and the attached portion of filling area 12B can be obtained (e.g., the lens array layer shown in any one of fig. 4A to 4D).

It should be noted that the lens array layer 12 described above in conjunction with fig. 2B is only one exemplary 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 the solid medium is shown as 12B in fig. 2B, the medium shown as 12B can also be used as the lens assembly and the medium shown as 12A can be used as the fill area in this example.

The lens array layer 12 is used for modulating light rays for obtaining 3D display, and based on this, any lens array layer satisfies the following characteristics: in the direction perpendicular to the end face of the lens array layer, 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 some embodiments, two adjacent lens regions of the plurality of lens regions included in the lens assembly 12A may be arranged without gaps, that is, the aperture of each lens region is, for example, N is greater than 0, and the center-to-center distance between two adjacent lens regions may be N. In other embodiments, the lens assembly 12A may include a plurality of lens regions, and two adjacent lens regions are spaced apart from each other by a certain distance, i.e., the aperture of each lens region is N, for example, and the distance between the centers of two adjacent lens regions is greater than N.

Alternatively, the lens regions included in any lens array layer may be one-dimensional linear lens units (e.g., cylindrical lens units) or two-dimensional lens units (e.g., circular lens units or square lens units), which is not limited by the embodiments of the present application.

It should be noted that, when the lens elements of the lens array layer are implemented as 12A in fig. 2B and the filling regions of the lens array layer are implemented as 12B in fig. 2B, the refractive index of the lens elements of the lens array layer is greater than that of the filling regions in order to satisfy the optical characteristics of the 3D display. Illustratively, the refractive index of the lens assembly is greater than 1 and the refractive index of the fill region 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 fill region is 1.43 or 1.

In some embodiments, the convex surface of the lens region 121 included in any one of the at least one lens array layer 12 may face the human eye side. In other embodiments, the convex surface of the lens region 121 included in any one of the at least one lens array layers 12 may face the side opposite to the human eye side.

No matter what kind of face type the light-transmitting area 11A of the diaphragm layer 11 is, and no matter what the convex surface of the lens area of each lens array layer in at least one lens array layer faces, the sum of the focal lengths of the light-transmitting area and all the lens areas with the central points located on the same straight line is greater than 0.

Optionally, when the filling areas of all the lens array layers in the naked-eye 3D display optical device 10 are air, the optical device located on the same straight line with the center point of any one of the transparent areas is the lens area of each lens array layer, and in the implementation scenario, the sum of the focal lengths of the transparent area and all the lens areas whose center points are located on the same straight line is greater than 0. When at least one lens array layer comprises 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, in the implementation scene, the filling area is positioned on the same straight line with the center point of any light-transmitting area of the diaphragm layer, and correspondingly, the sum of the focal lengths of the light-transmitting area, all the lens areas and the filling area on the same straight line with the center point is larger than 0.

Referring again to fig. 2A, optionally, a spacer layer 13 is disposed between each adjacent two of the stop layer 11 and the at least one lens array layer 12. Alternatively, the material of the spacer layer 13 may be a single refractive index material, or may be a composite material of a plurality of materials with different refractive indexes. The plurality of different refractive index materials may include, for example, Ultraviolet (UV) glue, Plastic (PC), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), air, and the like, which is not limited in the embodiment.

In the present application, for any spacing layer, the vertical distance from one layer to another layer with which the spacing layer is in contact is defined as "thickness" of the spacing layer in the present embodiment, and the "thickness of the spacing layer" referred to hereinafter in the present specification is used in this meaning, and the explanation thereof will not be repeated hereinafter in the present specification.

Illustratively, the thickness of the spacer layer may be on the order of micrometers (μm). For example, the thickness of the spacer layer between the aperture layer 11 and any adjacent lens array layer of the aperture layer 11 is 70 μm.

It is noted that the spacer layer 13 is provided to ensure the display performance of the outgoing light of the naked-eye 3D display optical device 10, and therefore, the thickness of the spacer layer 13 is related to the aberration of the naked-eye 3D display optical device 10. Illustratively, the focal length of the lens region in each lens array layer, the size of the aperture of the transparent region 11A, and the aberration of each lens region in at least one lens array layer 12 determine the thickness of the spacer layer 13. Specifically, the deployment can be flexibly performed according to an actual implementation scenario, which is not limited in the embodiment of the present application.

It is understood that fig. 2A is only a schematic representation and does not constitute a limitation to the naked eye 3D display optics of the present application. Although the stop layer in fig. 2A is an optical element layer disposed at the edge of the naked eye 3D display optical device, in an actual implementation scenario, the position relationship between the stop layer and the at least one lens array layer may be flexibly configured according to requirements. For example, in other embodiments of the present application, the naked eye 3D display optics comprise, for example, a stop layer and two lens array layers, the stop layer being, for example, located between the two lens array layers. The application is not exemplified here.

Referring to fig. 3, fig. 3 illustrates a naked-eye 3D display system 100 (hereinafter referred to as the system 100), where the system 100 includes a naked-eye 3D display optical device 110 and a display source 120, the display source 120 is used for emitting light 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 optics 110 may be as shown in the naked-eye 3D display optics 10 described in the above embodiments, and is configured to process light from the display source 120 to obtain light for 3D display, so that the light is incident on human eyes and then can present an image for 3D display to a user.

It is to be understood that the structure illustrated in fig. 3 does not constitute a specific limitation of the naked-eye 3D display system. In other embodiments of the present application, the naked-eye 3D display system may include more or less optical elements than those shown, which is not limited by the embodiments of the present application.

According to the description of the naked eye 3D display optical device, the naked eye 3D display optical device provided with the diaphragm layer is adopted in the naked eye 3D display system provided by the embodiment of the application, each light-transmitting area of the diaphragm layer is in one-to-one correspondence with the lens area in at least one lens array layer, and the caliber of any light-transmitting area in the diaphragm layer is smaller than or equal to the caliber of the corresponding lens area of the light-transmitting area, so that in light rays incident to the diaphragm layer of the naked eye 3D display optical device, light rays capable of generating relatively large aberration are shielded by the shading area of the diaphragm layer, and light rays emitted from the light-transmitting area of the diaphragm layer are light rays capable of generating relatively small aberration in the incident light rays. Based on this, in the bore hole 3D display system of this application embodiment, no matter the light that incides the diaphragm layer is from the lens array layer, still comes from the display source, and through the filtration of diaphragm layer, the light that all can ensure to be 3D display is the light that the aberration is less relatively to can reduce the influence of aberration to 3D display image, improve 3D display image's definition.

Optionally, under the condition that the naked-eye 3D display optical device 110 is fixed, the display source 120 may be disposed on the lower side of the naked-eye 3D display optical device 110 as illustrated in fig. 3, or may be disposed on the upper side of the naked-eye 3D display optical device 110. Of course, in a scene disposed on the upper side of the naked eye 3D display optical device 110, the light exit surface of the display source 120 faces the naked eye 3D display optical device 110. Based on this, as can be seen from the foregoing description of the naked-eye 3D display optical device, in some embodiments, the display source 120 may be adjacent to the stop layer of the naked-eye 3D display optical device 110, and the light exit surface of the display source 120 faces the stop layer of the naked-eye 3D display optical device 110 (as shown in fig. 4C and fig. 4D). In other embodiments, the display source 120 may 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 (as in the embodiments illustrated in fig. 4A and 4B).

Referring again to fig. 3, illustratively, a spacer layer 130 may be disposed between the naked eye 3D display optics 110 and the display source 120. The composition medium of the spacer layer 130 may refer to the composition medium of the spacer layer 13 in the above embodiments, and details of the embodiments of the present application are omitted here.

Optionally, the thickness of the spacer layer 130 is determined by the focal length of the optical path in the naked-eye 3D display optical device 110 and the distance between the spacer layer 130 and the lens array layer in the naked-eye 3D display optical device 110. That is, the thickness of the spacer layer 130 when the display source 120 is adjacent to the lens array layer is different from the thickness of the spacer layer 130 when the display source 120 is adjacent to the aperture layer, as described in more detail in the following embodiments.

The following describes the naked-eye 3D display system according to the embodiment of the present application, taking an example in which the naked-eye 3D display optical device 110 includes one lens array layer.

Referring to fig. 4A, fig. 4A illustrates a naked eye 3D display system 1000 (hereinafter referred to as system 1000), where the system 1000 includes a stop layer 1001, a first spacer layer 1002, a lens array layer 1003, a second spacer layer 1004, and a display source 1005. Therein, the naked eye 3D display optics in the system 1000 comprise a diaphragm layer 1001, a first spacer layer 1002 and a lens array layer 1003. The display source 1005 is disposed on one side of the lens array layer 1003, and a second spacer layer 1004 is disposed between the display source 1005 and the lens array layer 1003. The display source 1005 emits light in the direction of the lens array layer 1003, so that the naked eye 3D display optics in the system 1000 process the emitted light, so that a user can see an image of 3D display with naked eyes in the direction of the light emitted from the aperture layer 1001, where the image of 3D display is an image of 3D display effect displayed by the display source 1005, as shown in the optical path illustrated in fig. 4A.

The material of the first spacer layer 1002 and the material of the second spacer layer 1004 are the same as those of the above embodiments, and are not described herein again. 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 may be smaller than a predetermined value.

It should be noted that, ideally, 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 an actual implementation scenario, the thickness of the second spacer layer 1004 is difficult to be made to be exactly located at the focal plane of the lens array layer 1003. Based on this, in the naked eye 3D display system illustrated in the embodiment of the present application, a difference between the thickness of the second spacer layer 1004 and the focal length of the lens region in the lens array layer 1003 may be set to be smaller than a preset value, and a value range of the preset value should ensure that the corresponding naked eye 3D display system meets the requirement of optical imaging.

Referring again to fig. 4A, the aperture layer 1001 includes transparent regions and opaque regions, the transparent regions are, for example, black opaque materials, and the transparent regions are, for example, holes spaced apart from the black opaque materials. The aperture of each light-transmitting region is, for example, 0.18 mm. The lens array layer 1003 includes a lens component and a filling area, the lens component includes a plurality of lens areas which have the same surface type and are in one-to-one correspondence with the light transmission areas of the diaphragm layer 1001, the center of each lens area is aligned with the center of the corresponding light transmission area of the lens area, the aperture of each lens area is, for example, 0.27mm, and the center distance between two adjacent lens areas in the same lens array layer is 0.9mm or 0.27 mm. . In this example, the lens assembly includes a lens region convex toward the display source 1005.

It is to be understood that fig. 4A is only a schematic illustration, and does not limit the naked-eye 3D display system to which the present application relates. In other embodiments of the present application, the structural relationship between the display source and the naked eye 3D display optical device in the naked eye 3D display system may be other, and the convex surface orientation of the lens region in the lens array layer may be other.

For example, as a naked eye 3D display system 2000 (hereinafter referred to as system 2000) shown in fig. 4B, the system 2000 includes a diaphragm layer 2001, a first spacer layer 2002, a lens array layer 2003, a second spacer layer 2004 and a display source 2005. The structures, compositions and functions of the stop layer 2001, the first spacer layer 2002, the second spacer layer 2004 and the display source 2005 in the system 2000 may respectively refer to the descriptions of the stop layer 1001, the first spacer layer 1002, the second spacer layer 1004 and the display source 1005 in the system 1000, and the embodiments of the present application are not described in detail herein.

Illustratively, the lens array layer 2003 in the system 2000 includes lens regions that are convex in a direction toward the aperture layer 2001.

Illustratively, the spacing between adjacent lens regions in the system 2000 is 1.7mm, the aperture of the lens regions is, for example, 0.5mm, and the aperture of the light-transmissive regions in the aperture layer 2001 is, for example, 0.5mm or 0.3 mm.

It will be appreciated that although the optical path of the naked eye 3D display system is not shown in fig. 4B, the optical path of the system 2000 illustrated in fig. 4B is similar to that illustrated in fig. 4A and can be reasonably derived from that illustrated in fig. 4A.

Fig. 4A and 4B illustrate two exemplary naked-eye 3D display systems with display sources disposed on one side of the lens array layer, respectively, and in other embodiments, the display sources may also be disposed on one side of the aperture layer.

Referring to fig. 4C, fig. 4C is a naked-eye 3D display system 3000 (hereinafter, referred to as system 3000) provided in this embodiment of the present application, where the 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, which are sequentially arranged. 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 in the direction of the aperture layer 3003.

The structure, composition and function of the lens array layer 3001 and the stop layer 3003 in the system 3000 may respectively refer to the lens array layer 1003 and the stop layer 1001 in the system 1000, which is not described herein again. Alternatively, 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 may be related in size, as described in the system 1000, or as described in the system 2000.

Note that, in order to satisfy the optical characteristics of the 3D display, the difference between the sum of the thickness of the first spacer layer 3002 and the thickness of the second spacer layer 3004 in the system 3000 and the focal length of the lens region in the lens array layer 3001 is smaller than a predetermined value. The preset value is as described in the previous embodiment.

For another example, referring to fig. 4D, fig. 4D is a naked-eye 3D display system 4000 (hereinafter, referred to as system 4000) provided in an embodiment of the present application, where the system 4000 includes a lens array layer 4001, a first spacer layer 4002, a diaphragm layer 4003, a second spacer layer 4004, and a display source 4005, which are sequentially arranged. Wherein the convex surface of the lens region in the lens array layer 4001 is oriented convex as shown by the lens region of the lens array layer 2003 in the system 2000. The structural relationship between the lens array layer 4001 and the diaphragm layer 4003, the structural relationship between the source 4005 and the diaphragm layer 4003 and the second spacer layer 4004, and the relationship between the thickness of the first spacer layer 4002 and the thickness of the second spacer layer 4004 and the focal length of the lens region in the lens array layer 4001 can be referred to the related description in the system 3000, and are not described herein again.

It will be appreciated that although the optical path of the naked eye 3D display system is not shown in fig. 4D, the optical path of the system 4000 illustrated in fig. 4D is similar to that illustrated in fig. 4C and can be reasonably derived from that illustrated in fig. 4C.

It should be noted that, in the naked eye 3D display optical device included in the naked eye 3D display system illustrated in fig. 4A to 4D, the functions, optical characteristics, and relationships between the optical elements of the optical elements all satisfy the description of the embodiment corresponding to the naked eye 3D display optical device 10. For example, in the lens array layers illustrated in fig. 4A to 4D, the values of the refractive index of the lens region of each lens array layer and the refractive index of the filling region of the lens array layer may vary from one embodiment to another. Other conditions that the naked eye 3D display optical device in fig. 4A to 4D satisfies may be referred to the description of the above embodiments, and the embodiments of the present application are not described in detail here.

In addition, fig. 4A to 4D are all for convenience of explaining the technical solution of the present application, and an exemplary illustration is taken of an example in which the naked-eye 3D display optical device includes a lens array layer, and neither the naked-eye 3D display optical device nor the naked-eye 3D display system described in the embodiment of the present application is limited. In other embodiments of the present application, the naked eye 3D display optics may further comprise more optical elements, for example, the naked eye 3D display optics comprises at least two lens array layers. In other embodiments of the present application, the light-transmitting area of the aperture layer may be configured as a curved lens or the like. The embodiments of the present application are not illustrated herein.

To sum up, the bore hole 3D display optical device that this application embodiment provided includes at least one lens array layer and diaphragm layer, and this diaphragm layer includes the light zone and the shading zone that the interval set up, and every lens array layer includes lens subassembly and filling area in this at least one lens array layer that is used for the modulation to obtain the light of 3D display, and this lens subassembly includes the lens district that a plurality of intervals set up. In the embodiment of the application, when the naked eye 3D display optical device comprises at least two lens array layers, the lens areas in any two lens array layers correspond to each other one by one, and the central points of any corresponding lens area in all the lens array layers are on the same straight line. The light transmission areas of the diaphragm layer correspond to the lens areas of any lens array layer one by one, the central point of any light transmission area and the central point of the lens area corresponding to the light transmission area are also on the same straight line, and the caliber of each light transmission area in the diaphragm layer is smaller than or equal to the caliber of the lens area corresponding to the light transmission area. Therefore, among the light rays entering the diaphragm layer, the light rays which can generate relatively large aberration are shielded by the shading area of the diaphragm layer, so that the light rays emitted from the light transmitting area of the diaphragm layer are the light rays which can generate relatively small aberration in the incident light rays. Based on this, the bore hole 3D display system of this application embodiment, no matter the light that incides the diaphragm layer is from the lens array layer, still comes from the display source, and through the filtration of diaphragm layer, the light that all can ensure to be 3D display is the light that the aberration is less relatively to can reduce the influence of aberration to 3D display image, improve 3D display image's definition.

All parts of the specification are described in a progressive mode, the same and similar parts among all the embodiments can be referred to each other, the emphasis of each embodiment is different from other embodiments, and relevant points can be referred to the description of the method embodiment parts.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. The naked eye three-dimensional (3D) display optical device is characterized by comprising a diaphragm layer and at least one lens array layer, wherein the at least one lens array layer is used for modulating light rays for obtaining 3D display;

the diaphragm layer comprises a light transmitting area and a light shading area which are arranged at intervals;

each lens array layer in the at least one lens array layer comprises a lens assembly and a filling area, and the lens assembly comprises a plurality of lens areas which are arranged at intervals;

the light transmission areas of the diaphragm layer correspond to the lens areas of any lens array layer one by one, and the central point of any light transmission area and the central point of the lens area corresponding to the light transmission area are on the same straight line;

when the naked eye 3D display optical device comprises at least two lens array layers, lens areas in any two lens array layers of the at least two lens array layers are in one-to-one correspondence, and the central points of any corresponding lens areas in all the lens array layers are on the same straight line;

the aperture of each light-transmitting area in the diaphragm layer is smaller than or equal to the aperture of the lens area corresponding to the light-transmitting area.

2. Naked-eye 3D display optics according to claim 1,

and a spacing layer is arranged between the diaphragm layer and the adjacent two of the at least one lens array layer.

3. Naked-eye 3D display optics according to claim 1,

the surface type of each light-transmitting area of the diaphragm layer is a plane or a curved surface.

4. Naked-eye 3D display optics according to claim 1,

any lens array layer in the at least one lens array layer comprises a lens area convex surface facing to the human eye side or the side opposite to the human eye side.

5. Naked-eye 3D display optics according to claim 3 or 4,

the sum of the focal lengths of the light-transmitting area and all the lens areas with the central points positioned on the same straight line is more than 0.

6. The naked eye 3D display optics of claim 3,

when each light-transmitting area of the diaphragm layer is set to be a curved lens, the concave surface of the curved lens of each light-transmitting area faces towards the human eye side.

7. A naked eye three-dimensional (3D) display system is characterized by comprising 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 optics are as claimed in any one of claims 1 to 6.

8. The naked eye 3D display system of claim 7,

a spacer layer is arranged between the naked eye 3D display optical device and the display source.

9. The naked eye 3D display system according to claim 7 or 8, wherein when the naked eye 3D display optical device comprises a lens array layer and a spacer layer is arranged between the display source and the lens array layer, the difference between the thickness of the spacer layer and the focal length of a lens area in the lens array layer is smaller than a preset value.

10. The naked eye 3D display system according to claim 7 or 8, wherein when the naked eye 3D display optical device comprises a lens array layer, a first spacing layer is arranged between the diaphragm layer and the lens array layer, and a second spacing layer is arranged between the display source and the diaphragm layer, the difference between the sum of the thickness of the first spacing layer and the thickness of the second spacing layer and the focal length of a lens area in the lens array layer is smaller than a preset value.

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