CN113741046A - 3D display device based on dual-polarization composite pinhole array - Google Patents

3D display device based on dual-polarization composite pinhole array Download PDF

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CN113741046A
CN113741046A CN202111065157.9A CN202111065157A CN113741046A CN 113741046 A CN113741046 A CN 113741046A CN 202111065157 A CN202111065157 A CN 202111065157A CN 113741046 A CN113741046 A CN 113741046A
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dimensional
transmitting
pinhole
image element
light
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CN113741046B (en
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吴非
樊为
高燕
范钧
陈章达
谢了尖
徐雯
任洪娇
曾星
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Chengdu Technological University CDTU
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/30Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
    • G02B30/32Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers characterised by the geometry of the parallax barriers, e.g. staggered barriers, slanted parallax arrays or parallax arrays of varying shape or size

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Abstract

The invention discloses a 3D display device based on a dual-polarization composite pinhole array, which comprises a display screen, a polarization composite pinhole array I and a polarization composite pinhole array II; a part of light rays emitted by each one-dimensional image element pass through a one-dimensional light-transmitting pinhole I corresponding to the image element and are projected to an imaging space through a polarization composite pinhole array II; part of light rays emitted by each two-dimensional image element pass through the polarization composite pinhole array I and are modulated into polarized light II with the same polarization direction by the polarization composite pinhole array I, and the polarized light II is projected to an imaging space through the two-dimensional light-transmitting pinholes II corresponding to the two-dimensional image elements; a part of light rays emitted by each two-dimensional image element pass through a two-dimensional light-transmitting pinhole I corresponding to the image element and are projected to an imaging space through a polarization composite pinhole array II; A3D image with high imaging efficiency is formed in a viewing area.

Description

3D display device based on dual-polarization composite pinhole array
Technical Field
The invention relates to 3D display, in particular to a 3D display device based on a dual-polarization composite pinhole array.
Background
The integrated imaging records the information of the 3D scene to a photosensitive film, and projects the information on the photosensitive film to an imaging space by utilizing the principle of reversible light path, thereby reconstructing the 3D scene. Compared with other 3D displays, the integrated imaging 3D display has the advantages of continuous viewing viewpoints, no need of vision-aiding equipment and coherent light and the like. The prior art scheme adopts a composite pinhole array to increase the resolution: the composite pinhole array comprises one-dimensional pinholes and two-dimensional pinholes; the one-dimensional pinholes and the two-dimensional pinholes are arranged at intervals in the horizontal and vertical directions; the composite micro-image array comprises a one-dimensional image element and a two-dimensional image element, wherein the one-dimensional image element and the two-dimensional image element are respectively aligned with the one-dimensional pinhole and the two-dimensional pinhole correspondingly; the one-dimensional image element reconstructs a one-dimensional 3D image through the corresponding one-dimensional pinhole, and the two-dimensional image element reconstructs a two-dimensional 3D image through the corresponding two-dimensional pinhole; the one-dimensional 3D image and the two-dimensional 3D image are combined into a high-resolution and full-parallax 3D image in the viewing area.
Occlusion exists in integrated imaging 3D displays based on composite pinhole arrays. Imaging efficiency is a parameter that measures the effect of occlusion on viewing. In integrated imaging 3D display based on composite pinhole arrays, the imaging efficiency is equal to the aperture ratio of the composite pinhole array. Although the aperture ratio of the composite pinhole array can be increased by increasing the aperture widths of the one-dimensional and two-dimensional pinholes, the 3D image loses depth perception due to the excessively large aperture width. In practical application, the aperture width of the one-dimensional pinholes and the two-dimensional pinholes is generally not more than 20% of the pitch of the one-dimensional pinholes and the two-dimensional pinholes. Thus, the imaging efficiency of integrated imaging 3D displays based on composite pinhole arrays generally does not exceed 12%. The bottleneck problem of low imaging efficiency seriously affects the experience of viewers, so that the wide application of the integrated imaging 3D display based on the composite pinhole array is restricted.
Disclosure of Invention
The invention provides a 3D display device based on a dual-polarization composite pinhole array, which is characterized by comprising a display screen, a polarization composite pinhole array I and a polarization composite pinhole array II, wherein the display screen is as shown in figure 1; the display screen, the polarization composite pinhole array I and the polarization composite pinhole array II are sequentially arranged in parallel; the polarization composite pinhole array I is tightly attached to the polarization composite pinhole array II; the polarization composite pinhole array I is provided with a one-dimensional light-transmitting pinhole I and a two-dimensional light-transmitting pinhole I, as shown in figure 2; the polarization composite pinhole array II is provided with a one-dimensional light-transmitting pinhole II and a two-dimensional light-transmitting pinhole II, as shown in figure 3; the polarization direction of the polarization composite pinhole array I is orthogonal to that of the polarization composite pinhole array II; the horizontal aperture width of the one-dimensional light-transmitting pinhole I is equal to that of the two-dimensional light-transmitting pinhole I; the horizontal aperture width of the one-dimensional light-transmitting pinhole II is equal to that of the two-dimensional light-transmitting pinhole II; the display screen is used for displaying the composite image element array, as shown in FIG. 4; the composite image element array comprises a one-dimensional image element and a two-dimensional image element; the one-dimensional image elements are positioned in odd columns of the composite image element array, and the two-dimensional image elements are positioned in even columns of the composite image element array; the pitches of the one-dimensional image elements and the two-dimensional image elements are the same; the one-dimensional light-transmitting pinhole I and the one-dimensional light-transmitting pinhole II correspond to the one-dimensional image element; the one-dimensional light-transmitting pinholes I and the one-dimensional light-transmitting pinholes II corresponding to each one-dimensional image element are alternately alternated in the horizontal direction, and the interval width of the adjacent one-dimensional light-transmitting pinholes I corresponding to each one-dimensional image element is equal to the horizontal aperture width of the one-dimensional light-transmitting pinholes II; the two-dimensional light-transmitting pinhole I and the two-dimensional light-transmitting pinhole II correspond to the two-dimensional image element, and the centers of the two-dimensional light-transmitting pinhole I and the two-dimensional light-transmitting pinhole II are aligned with the horizontal central axis of the corresponding two-dimensional image element; the two-dimensional light-transmitting pinholes I and the two-dimensional light-transmitting pinholes II corresponding to each two-dimensional image element are alternately arranged in the horizontal direction, and the interval width of the adjacent two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element is equal to the horizontal aperture width of the two-dimensional light-transmitting pinholes II; part of light rays emitted by each one-dimensional image element pass through the polarization composite pinhole array I and are modulated into polarized light I with the same polarization direction by the polarization composite pinhole array I, and the polarized light I is projected to an imaging space through a one-dimensional light-transmitting pinhole II corresponding to the one-dimensional image element; a part of light rays emitted by each one-dimensional image element pass through a one-dimensional light-transmitting pinhole I corresponding to the image element and are projected to an imaging space through a polarization composite pinhole array II; part of light rays emitted by each two-dimensional image element pass through the polarization composite pinhole array I and are modulated into polarized light II with the same polarization direction by the polarization composite pinhole array I, and the polarized light II is projected to an imaging space through the two-dimensional light-transmitting pinholes II corresponding to the two-dimensional image elements; a part of light rays emitted by each two-dimensional image element pass through a two-dimensional light-transmitting pinhole I corresponding to the image element and are projected to an imaging space through a polarization composite pinhole array II; A3D image with high imaging efficiency is formed in a viewing area.
Preferably, the number of the one-dimensional light-transmitting pinholes I corresponding to each one-dimensional image element and the number of the two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element are the same; the number of the one-dimensional light-transmitting pinholes II corresponding to each one-dimensional image element and the number of the two-dimensional light-transmitting pinholes II corresponding to each two-dimensional image element are the same; the number of the one-dimensional light-transmitting pinholes I corresponding to each one-dimensional image element is one more than that of the one-dimensional light-transmitting pinholes II corresponding to each one-dimensional image element.
Preferably, the one-dimensional light-transmitting pinholes I and the one-dimensional light-transmitting pinholes II corresponding to each one-dimensional image element are symmetrically arranged by taking the center of the one-dimensional image element as a center; and the two-dimensional light-transmitting pinholes I and the two-dimensional light-transmitting pinholes II corresponding to each two-dimensional image element are symmetrically arranged by taking the center of the two-dimensional image element as a center.
Preferably, the horizontal aperture width of the two-dimensional light-transmitting pinhole Iw 1Horizontal aperture width of two-dimensional light-transmitting pinhole IIw 2 Thickness of polarization composite pinhole array Is、Thickness of polarization composite pinhole array IItSatisfies the following formula
Figure 100002_DEST_PATH_IMAGE002
(1)
Figure 100002_DEST_PATH_IMAGE004
(2)
Figure 100002_DEST_PATH_IMAGE006
(3)
Wherein the content of the first and second substances,pis the pitch of the two-dimensional picture elements,nis the number of two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element,gis the distance between the display screen and the polarization composite pinhole array I.
Preferably, the horizontal aperture width of the two-dimensional light-transmitting pinhole Iw 1Horizontal aperture width of two-dimensional light-transmitting pinhole IIw 2Satisfies the following formula
Figure 712287DEST_PATH_IMAGE008
(4)
Wherein the content of the first and second substances,pis the pitch of the two-dimensional picture elements,nis the number of two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element.
Preferably, the vertical aperture width of the two-dimensional light-transmitting pinhole Iv 1The width of the vertical aperture of the two-dimensional light-transmitting pinhole IIv 2Satisfies the following formula
Figure 534750DEST_PATH_IMAGE010
(5)
Figure 801783DEST_PATH_IMAGE012
(6)
Wherein the content of the first and second substances,pis the pitch of the two-dimensional picture elements,gis the distance between the display screen and the polarization composite pinhole array I,sis the thickness of the polarization composite pinhole array I,tis the thickness of the polarization composite pinhole array II.
Preferably, the imaging efficiency of the 3D display device based on the dual-polarization composite pinhole arraykIs composed of
Figure 683DEST_PATH_IMAGE014
(7)
Wherein the content of the first and second substances,pis the pitch of the two-dimensional picture elements,nis the number of two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element,w 1is the horizontal aperture width of the two-dimensional light-transmitting pinhole I,w 2is the horizontal aperture width of the two-dimensional light-transmitting pinhole II,v 1is the vertical aperture width of the two-dimensional light-transmitting pinhole I,v 2is the vertical aperture width of the two-dimensional light-transmitting pinhole II,ais the number of one-dimensional image elements in the horizontal direction of the composite image element array,bis the number of two-dimensional picture elements in the horizontal direction of the composite picture element array.
Drawings
FIG. 1 is a schematic view of the structure and horizontal direction of the present invention
FIG. 2 is a schematic diagram of a polarization composite pinhole array I of the present invention
FIG. 3 is a schematic diagram of a polarization composite pinhole array II of the present invention
FIG. 4 is a schematic diagram of a composite image element array according to the present invention
The reference numbers in the figures are:
1. the display screen comprises a display screen, 2. a polarization composite pinhole array I, 3. a polarization composite pinhole array II, 4. a one-dimensional light-transmitting pinhole I, 5. a one-dimensional light-transmitting pinhole II, 6. a two-dimensional light-transmitting pinhole I, 7. a two-dimensional light-transmitting pinhole II, 8. a one-dimensional image element and 9. a two-dimensional image element.
It should be understood that the above-described figures are merely schematic and are not drawn to scale.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description of an exemplary embodiment of the invention. It should be noted that the following examples are only for illustrative purposes and should not be construed as limiting the scope of the present invention, and that the skilled person in the art may make modifications and adaptations of the present invention without departing from the scope of the present invention.
The invention provides a 3D display device based on a dual-polarization composite pinhole array, which is characterized by comprising a display screen, a polarization composite pinhole array I and a polarization composite pinhole array II, wherein the display screen is as shown in figure 1; the display screen, the polarization composite pinhole array I and the polarization composite pinhole array II are sequentially arranged in parallel; the polarization composite pinhole array I is tightly attached to the polarization composite pinhole array II; the polarization composite pinhole array I is provided with a one-dimensional light-transmitting pinhole I and a two-dimensional light-transmitting pinhole I, as shown in figure 2; the polarization composite pinhole array II is provided with a one-dimensional light-transmitting pinhole II and a two-dimensional light-transmitting pinhole II, as shown in figure 3; the polarization direction of the polarization composite pinhole array I is orthogonal to that of the polarization composite pinhole array II; the horizontal aperture width of the one-dimensional light-transmitting pinhole I is equal to that of the two-dimensional light-transmitting pinhole I; the horizontal aperture width of the one-dimensional light-transmitting pinhole II is equal to that of the two-dimensional light-transmitting pinhole II; the display screen is used for displaying the composite image element array, as shown in FIG. 4; the composite image element array comprises a one-dimensional image element and a two-dimensional image element; the one-dimensional image elements are positioned in odd columns of the composite image element array, and the two-dimensional image elements are positioned in even columns of the composite image element array; the pitches of the one-dimensional image elements and the two-dimensional image elements are the same; the one-dimensional light-transmitting pinhole I and the one-dimensional light-transmitting pinhole II correspond to the one-dimensional image element; the one-dimensional light-transmitting pinholes I and the one-dimensional light-transmitting pinholes II corresponding to each one-dimensional image element are alternately alternated in the horizontal direction, and the interval width of the adjacent one-dimensional light-transmitting pinholes I corresponding to each one-dimensional image element is equal to the horizontal aperture width of the one-dimensional light-transmitting pinholes II; the two-dimensional light-transmitting pinhole I and the two-dimensional light-transmitting pinhole II correspond to the two-dimensional image element, and the centers of the two-dimensional light-transmitting pinhole I and the two-dimensional light-transmitting pinhole II are aligned with the horizontal central axis of the corresponding two-dimensional image element; the two-dimensional light-transmitting pinholes I and the two-dimensional light-transmitting pinholes II corresponding to each two-dimensional image element are alternately arranged in the horizontal direction, and the interval width of the adjacent two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element is equal to the horizontal aperture width of the two-dimensional light-transmitting pinholes II; part of light rays emitted by each one-dimensional image element pass through the polarization composite pinhole array I and are modulated into polarized light I with the same polarization direction by the polarization composite pinhole array I, and the polarized light I is projected to an imaging space through a one-dimensional light-transmitting pinhole II corresponding to the one-dimensional image element; a part of light rays emitted by each one-dimensional image element pass through a one-dimensional light-transmitting pinhole I corresponding to the image element and are projected to an imaging space through a polarization composite pinhole array II; part of light rays emitted by each two-dimensional image element pass through the polarization composite pinhole array I and are modulated into polarized light II with the same polarization direction by the polarization composite pinhole array I, and the polarized light II is projected to an imaging space through the two-dimensional light-transmitting pinholes II corresponding to the two-dimensional image elements; a part of light rays emitted by each two-dimensional image element pass through a two-dimensional light-transmitting pinhole I corresponding to the image element and are projected to an imaging space through a polarization composite pinhole array II; A3D image with high imaging efficiency is formed in a viewing area.
Preferably, the number of the one-dimensional light-transmitting pinholes I corresponding to each one-dimensional image element and the number of the two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element are the same; the number of the one-dimensional light-transmitting pinholes II corresponding to each one-dimensional image element and the number of the two-dimensional light-transmitting pinholes II corresponding to each two-dimensional image element are the same; the number of the one-dimensional light-transmitting pinholes I corresponding to each one-dimensional image element is one more than that of the one-dimensional light-transmitting pinholes II corresponding to each one-dimensional image element.
Preferably, the one-dimensional light-transmitting pinholes I and the one-dimensional light-transmitting pinholes II corresponding to each one-dimensional image element are symmetrically arranged by taking the center of the one-dimensional image element as a center; and the two-dimensional light-transmitting pinholes I and the two-dimensional light-transmitting pinholes II corresponding to each two-dimensional image element are symmetrically arranged by taking the center of the two-dimensional image element as a center.
Preferably, the horizontal aperture width of the two-dimensional light-transmitting pinhole Iw 1Horizontal aperture width of two-dimensional light-transmitting pinhole IIw 2 Thickness of polarization composite pinhole array Is、Thickness of polarization composite pinhole array IItSatisfies the following formula
Figure 607245DEST_PATH_IMAGE002
(1)
Figure 600609DEST_PATH_IMAGE004
(2)
Figure 292621DEST_PATH_IMAGE006
(3)
Wherein the content of the first and second substances,pis the pitch of the two-dimensional picture elements,nis the number of two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element,gis the distance between the display screen and the polarization composite pinhole array I.
Preferably, the horizontal aperture width of the two-dimensional light-transmitting pinhole Iw 1Horizontal aperture width of two-dimensional light-transmitting pinhole IIw 2Satisfies the following formula
Figure 29633DEST_PATH_IMAGE008
(4)
Wherein the content of the first and second substances,pis the pitch of the two-dimensional picture elements,nis the number of two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element.
Preferably, the vertical aperture width of the two-dimensional light-transmitting pinhole Iv 1The width of the vertical aperture of the two-dimensional light-transmitting pinhole IIv 2Satisfies the following formula
Figure 553019DEST_PATH_IMAGE010
(5)
Figure 982863DEST_PATH_IMAGE012
(6)
Wherein the content of the first and second substances,pis the pitch of the two-dimensional picture elements,gis the distance between the display screen and the polarization composite pinhole array I,sis the thickness of the polarization composite pinhole array I,tis the thickness of the polarization composite pinhole array II.
Preferably, the imaging efficiency of the 3D display device based on the dual-polarization composite pinhole arraykIs composed of
Figure 162171DEST_PATH_IMAGE014
(7)
Wherein the content of the first and second substances,pis the pitch of the two-dimensional picture elements,nis a two-dimensional light-transmitting needle corresponding to each two-dimensional image elementThe number of the holes I is such that,w 1is the horizontal aperture width of the two-dimensional light-transmitting pinhole I,w 2is the horizontal aperture width of the two-dimensional light-transmitting pinhole II,v 1is the vertical aperture width of the two-dimensional light-transmitting pinhole I,v 2is the vertical aperture width of the two-dimensional light-transmitting pinhole II,ais the number of one-dimensional image elements in the horizontal direction of the composite image element array,bis the number of two-dimensional picture elements in the horizontal direction of the composite picture element array.
The distance between the display screen and the polarization composite pinhole array I is 2mm, the pitch of the two-dimensional image elements is 10mm, the horizontal aperture width of the two-dimensional light-transmitting pinhole I is 1mm, the number of the two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element is 3, the number of the two-dimensional image elements in the horizontal direction of the composite image element array is 5, and then the horizontal aperture width of the two-dimensional light-transmitting pinhole II is obtained by calculating the formulas (1), (2), (3) and (4)Thickness of polarization composite pinhole array IThe thicknesses of the polarization composite pinhole array II are 1.5mm, 1mm and 1.5mm respectively; the vertical aperture width of the two-dimensional light-transmitting pinhole I and the vertical aperture width of the two-dimensional light-transmitting pinhole II are respectively 2mm and 2mm which are obtained by calculation according to the formulas (5) and (6); the imaging efficiency of the 3D display device based on the dual-polarization composite pinhole array was calculated from equation (7) to be 36%.

Claims (7)

1. The 3D display device based on the dual-polarization composite pinhole array is characterized by comprising a display screen, a polarization composite pinhole array I and a polarization composite pinhole array II; the display screen, the polarization composite pinhole array I and the polarization composite pinhole array II are sequentially arranged in parallel; the polarization composite pinhole array I is tightly attached to the polarization composite pinhole array II; the polarization composite pinhole array I is provided with a one-dimensional light-transmitting pinhole I and a two-dimensional light-transmitting pinhole I; the polarization composite pinhole array II is provided with a one-dimensional light-transmitting pinhole II and a two-dimensional light-transmitting pinhole II; the polarization direction of the polarization composite pinhole array I is orthogonal to that of the polarization composite pinhole array II; the horizontal aperture width of the one-dimensional light-transmitting pinhole I is equal to that of the two-dimensional light-transmitting pinhole I; the horizontal aperture width of the one-dimensional light-transmitting pinhole II is equal to that of the two-dimensional light-transmitting pinhole II; the display screen is used for displaying the composite image element array; the composite image element array comprises a one-dimensional image element and a two-dimensional image element; the one-dimensional image elements are positioned in odd columns of the composite image element array, and the two-dimensional image elements are positioned in even columns of the composite image element array; the pitches of the one-dimensional image elements and the two-dimensional image elements are the same; the one-dimensional light-transmitting pinhole I and the one-dimensional light-transmitting pinhole II correspond to the one-dimensional image element; the one-dimensional light-transmitting pinholes I and the one-dimensional light-transmitting pinholes II corresponding to each one-dimensional image element are alternately alternated in the horizontal direction, and the interval width of the adjacent one-dimensional light-transmitting pinholes I corresponding to each one-dimensional image element is equal to the horizontal aperture width of the one-dimensional light-transmitting pinholes II; the two-dimensional light-transmitting pinhole I and the two-dimensional light-transmitting pinhole II correspond to the two-dimensional image element, and the centers of the two-dimensional light-transmitting pinhole I and the two-dimensional light-transmitting pinhole II are aligned with the horizontal central axis of the corresponding two-dimensional image element; the two-dimensional light-transmitting pinholes I and the two-dimensional light-transmitting pinholes II corresponding to each two-dimensional image element are alternately arranged in the horizontal direction, and the interval width of the adjacent two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element is equal to the horizontal aperture width of the two-dimensional light-transmitting pinholes II; part of light rays emitted by each one-dimensional image element pass through the polarization composite pinhole array I and are modulated into polarized light I with the same polarization direction by the polarization composite pinhole array I, and the polarized light I is projected to an imaging space through a one-dimensional light-transmitting pinhole II corresponding to the one-dimensional image element; a part of light rays emitted by each one-dimensional image element pass through a one-dimensional light-transmitting pinhole I corresponding to the image element and are projected to an imaging space through a polarization composite pinhole array II; part of light rays emitted by each two-dimensional image element pass through the polarization composite pinhole array I and are modulated into polarized light II with the same polarization direction by the polarization composite pinhole array I, and the polarized light II is projected to an imaging space through the two-dimensional light-transmitting pinholes II corresponding to the two-dimensional image elements; a part of light rays emitted by each two-dimensional image element pass through a two-dimensional light-transmitting pinhole I corresponding to the image element and are projected to an imaging space through a polarization composite pinhole array II; A3D image with high imaging efficiency is formed in a viewing area.
2. The dual-polarization composite pinhole array-based 3D display device according to claim 1, wherein the number of the one-dimensional light-transmitting pinholes I corresponding to each one-dimensional image element and the number of the two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element are the same; the number of the one-dimensional light-transmitting pinholes II corresponding to each one-dimensional image element and the number of the two-dimensional light-transmitting pinholes II corresponding to each two-dimensional image element are the same; the number of the one-dimensional light-transmitting pinholes I corresponding to each one-dimensional image element is one more than that of the one-dimensional light-transmitting pinholes II corresponding to each one-dimensional image element.
3. The dual-polarization composite pinhole array-based 3D display device according to claim 2, wherein the one-dimensional light-transmitting pinholes I and II corresponding to each one-dimensional image element are symmetrically arranged with the center of the one-dimensional image element as the center; and the two-dimensional light-transmitting pinholes I and the two-dimensional light-transmitting pinholes II corresponding to each two-dimensional image element are symmetrically arranged by taking the center of the two-dimensional image element as a center.
4. The dual-polarization composite pinhole array-based 3D display device according to claim 3, wherein the horizontal aperture width of the two-dimensional light-transmitting pinholes Iw 1Horizontal aperture width of two-dimensional light-transmitting pinhole IIw 2 Thickness of polarization composite pinhole array Is、Thickness of polarization composite pinhole array IItSatisfies the following formula
Figure 702801DEST_PATH_IMAGE001
Figure DEST_PATH_IMAGE002
Figure 619941DEST_PATH_IMAGE003
Wherein the content of the first and second substances,pis the pitch of the two-dimensional picture elements,nis the number of two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element,gis the distance between the display screen and the polarization composite pinhole array I.
5. The dual-polarization composite pinhole array-based 3D display device according to claim 4, wherein the horizontal aperture width of the two-dimensional light-transmitting pinholes Iw 1Horizontal aperture width of two-dimensional light-transmitting pinhole IIw 2Satisfies the following formula
Figure DEST_PATH_IMAGE004
Wherein the content of the first and second substances,pis the pitch of the two-dimensional picture elements,nis the number of two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element.
6. The dual-polarization composite pinhole array-based 3D display device according to claim 1, wherein the vertical aperture width of two-dimensional light-transmitting pinholes Iv 1The width of the vertical aperture of the two-dimensional light-transmitting pinhole IIv 2Satisfies the following formula
Figure 337362DEST_PATH_IMAGE005
Figure DEST_PATH_IMAGE006
Wherein the content of the first and second substances,pis the pitch of the two-dimensional picture elements,gis the distance between the display screen and the polarization composite pinhole array I,sis the thickness of the polarization composite pinhole array I,tis the thickness of the polarization composite pinhole array II.
7. The dual-polarization composite pinhole array-based 3D display device according to claim 1, wherein the imaging efficiency of the dual-polarization composite pinhole array-based 3D display devicekIs composed of
Figure 732571DEST_PATH_IMAGE007
Wherein the content of the first and second substances,pis the pitch of the two-dimensional picture elements,nis the number of two-dimensional light-transmitting pinholes I corresponding to each two-dimensional image element,w 1is the horizontal aperture width of the two-dimensional light-transmitting pinhole I,w 2is the horizontal aperture width of the two-dimensional light-transmitting pinhole II,v 1is the vertical aperture width of the two-dimensional light-transmitting pinhole I,v 2is the vertical aperture width of the two-dimensional light-transmitting pinhole II,ais the number of one-dimensional image elements in the horizontal direction of the composite image element array,bis the number of two-dimensional picture elements in the horizontal direction of the composite picture element array.
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