CN112485920B - Double-vision 3D display device based on stepped gradual change aperture pinhole array - Google Patents

Double-vision 3D display device based on stepped gradual change aperture pinhole array Download PDF

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CN112485920B
CN112485920B CN202110027697.1A CN202110027697A CN112485920B CN 112485920 B CN112485920 B CN 112485920B CN 202110027697 A CN202110027697 A CN 202110027697A CN 112485920 B CN112485920 B CN 112485920B
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pinholes
pinhole array
image
aperture
stepped
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CN112485920A (en
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吴非
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Jiangsu Hongxu Desheng Technology Co ltd
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Jiangsu Hongxu Desheng Technology Co ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical 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
    • G02B30/22—Optical 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
    • G02B30/25—Optical 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical 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
    • G02B30/26—Optical 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
    • G02B30/30—Optical 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
    • G02B30/32—Optical 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical 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
    • G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)

Abstract

The invention discloses a double-vision 3D display device based on a stepped gradient aperture pinhole array, which comprises a display screen, a polarization grating, a stepped gradient aperture pinhole array, a polarization glasses I and a polarization glasses II; the horizontal aperture width of pinholes in the same row of the stepped gradual change aperture pinhole array is the same; the horizontal aperture width of the continuous multiple rows of pinholes positioned in the center of the stepped gradual change aperture pinhole array is the same; the polarization grating is formed by alternately arranging grating units I and grating units II in the horizontal direction; reconstructing a 3D image I by the image element I through the grating unit I and the pinhole corresponding to the image element I; reconstructing a 3D image II by the image element II through the grating unit II and the pinhole corresponding to the image element II; only the 3D image I can be seen through the polarization glasses I and only the 3D image II can be seen through the polarization glasses II.

Description

Double-vision 3D display device based on stepped gradual change aperture pinhole array
Technical Field
The invention relates to 3D display, in particular to a double-vision 3D display device based on a stepped gradual change aperture pinhole array.
Background
The integrated imaging dual-view 3D display is a fusion of the dual-view display technology and the integrated imaging 3D display technology. It may enable a viewer to see different 3D pictures in different viewing directions. However, conventional integrated imaging dual vision 3D displays suffer from the disadvantage of having two separate viewing zones. The need for a viewer to move the viewing position to see another picture has limited to a certain extent the use of integrated imaging dual vision 3D displays in home entertainment and medical devices. Two different 3D pictures can be separated by adopting the polarization grating and matched polarization glasses, and a viewer can see different 3D pictures by switching different polarization glasses.
The traditional integrated imaging double-vision 3D display device based on the polarization grating and the gradient aperture pinhole array has the advantages of high optical efficiency, wide viewing angle and the like. However, the conventional integrated imaging dual-view 3D display device based on the polarization grating and the graded aperture pinhole array mainly has the following disadvantages:
(1) The pitch of the grating units I and II in the polarization grating is equal to the pitch of the pinholes. The number of grating units in the polarization grating is equal to the number of pinholes in the horizontal direction of the graded aperture pinhole array. The horizontal resolution of the integrated imaging dual vision 3D display device is equal to the number of pinholes in the horizontal direction of the progressive aperture pinhole array. Thus, the greater the horizontal resolution, the greater the difficulty and cost of manufacturing the polarization grating.
(2) The horizontal aperture widths of adjacent pinholes in the graded aperture pinhole array vary in an equi-differential relationship. The horizontal resolution of the integrated imaging dual vision 3D display device is equal to the number of pinholes in the horizontal direction of the progressive aperture pinhole array. Thus, the greater the horizontal resolution, the greater the difficulty and cost of manufacturing a graded aperture pinhole array.
Disclosure of Invention
The invention provides a double-vision 3D display device based on a stepped gradient aperture pinhole array, which is shown in figures 1,2 and 3, and is characterized by comprising a display screen, a polarization grating, a stepped gradient aperture pinhole array, a polarization glasses I and a polarization glasses II; the display screen, the polarization grating and the stepped gradient aperture pinhole array are arranged in parallel and aligned correspondingly; the polarization grating is positioned between the display screen and the stepped gradient aperture pinhole array and is attached to the display screen; the horizontal aperture width of pinholes in the same row of the stepped gradual change aperture pinhole array is the same; the horizontal aperture width of the continuous multiple rows of pinholes positioned in the center of the stepped gradual change aperture pinhole array is the same; the horizontal aperture width H i of the ith row of pinholes in the stepped gradual change aperture pinhole array is calculated by the following formula
（1）
Wherein p is the pitch of pinholes, a is the number of columns of continuous multi-column pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array, w is the horizontal aperture width of continuous multi-column pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array, m is the number of pinholes in the horizontal direction of the stepped gradient aperture pinhole array, l is the viewing distance, and g is the distance between the display screen and the stepped gradient aperture pinhole array; as shown in fig. 4, the polarization grating is formed by alternately arranging grating units I and II in a horizontal direction, wherein the polarization direction of the grating unit I is orthogonal to that of the grating unit II; the display screen is used for displaying the micro-image array; as shown in fig. 5, the micro-image array includes an image element I and an image element II; the pitch of the image element I and the image element II is equal to the pitch of the pinholes; a plurality of image elements I which are continuously arranged in the horizontal direction and a plurality of pinholes which are continuously arranged in the horizontal direction are correspondingly aligned with the same grating unit I; a plurality of image elements II which are continuously arranged in the horizontal direction and a plurality of pinholes which are continuously arranged in the horizontal direction are correspondingly aligned with the same grating unit II; reconstructing a 3D image I by the image element I through the grating unit I and the pinhole corresponding to the image element I; reconstructing a 3D image II by the image element II through the grating unit II and the pinhole corresponding to the image element II; the polarization direction of the polarized glasses I is the same as that of the grating unit I, and the polarization direction of the polarized glasses II is the same as that of the grating unit II; only the 3D image I can be seen through the polarization glasses I and only the 3D image II can be seen through the polarization glasses II.
Preferably, the horizontal widths of the display screen, the polarization grating and the stepped gradient aperture pinhole array are equal, and the vertical widths of the display screen, the polarization grating and the stepped gradient aperture pinhole array are equal.
Preferably, the number of pinholes which are continuously arranged in the horizontal direction and correspond to the same grating unit I is equal to half of the number of continuous multiple rows of pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array; the number of pinholes which are continuously arranged in the horizontal direction corresponding to the same grating unit II is equal to half the number of continuous multiple rows of pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array.
Preferably, the number of columns t of grating units in the polarization grating is calculated by the following formula
（2）
The pitch s of the grating units I and II is calculated by the following formula
（3）
Where p is the pitch of the pinholes, a is the number of columns of continuous multiple columns of pinholes of the same horizontal aperture width at the center of the stepped graded aperture pinhole array, and m is the number of pinholes in the horizontal direction of the stepped graded aperture pinhole array.
Preferably, the horizontal viewing angle of the 3D image I is the same as that of the 3D image II; the vertical viewing angle of the 3D image I is the same as that of the 3D image II; the horizontal viewing angle θ 1 and the vertical viewing angle θ 2 of the 3D image I and the 3D image II are calculated by the following formula
（4）
（5）
Where p is the pitch of the pinholes, a is the number of columns of continuous multiple columns of pinholes with the same horizontal aperture width at the center of the stepped graded aperture pinhole array, w is the horizontal aperture width of continuous multiple columns of pinholes with the same horizontal aperture width at the center of the stepped graded aperture pinhole array, l is the viewing distance, v is the vertical aperture width of the pinholes, g is the spacing between the display screen and the stepped graded aperture pinhole array, and n is the number of pinholes in the vertical direction of the stepped graded aperture pinhole array.
Drawings
FIG. 1 is a schematic diagram of the structure and parameters in the horizontal direction of the present invention
FIG. 2 is a schematic diagram of parameters of the invention in the vertical direction of the pixel I and the grating unit I
FIG. 3 is a schematic diagram showing parameters of the image element II and the grating unit II in the vertical direction
FIG. 4 is a schematic diagram of a polarization grating according to the present invention
FIG. 5 is a schematic structural diagram of a microimage array according to the present invention
The graphic reference numerals in the above figures are:
1. The display screen, 2 polarization gratings, 3 stepped gradient aperture pinhole arrays, 4 polarization glasses I,5 polarization glasses II,6 grating units I, 7 grating units II,8 image elements I and 9 image elements II.
It should be understood that the above-described figures are merely schematic and are not drawn to scale.
Detailed Description
An exemplary embodiment of a dual vision 3D display device based on a stepped graded aperture pinhole array of the present invention will be described in detail below, and the present invention will be described in further detail. It is noted that the following examples are given for the purpose of illustration only and are not to be construed as limiting the scope of the invention, since numerous insubstantial modifications and adaptations of the invention will be within the scope of the invention as viewed by one skilled in the art from the foregoing disclosure.
The invention provides a double-vision 3D display device based on a stepped gradient aperture pinhole array, which is shown in figures 1,2 and 3, and is characterized by comprising a display screen, a polarization grating, a stepped gradient aperture pinhole array, a polarization glasses I and a polarization glasses II; the display screen, the polarization grating and the stepped gradient aperture pinhole array are arranged in parallel and aligned correspondingly; the polarization grating is positioned between the display screen and the stepped gradient aperture pinhole array and is attached to the display screen; the horizontal aperture width of pinholes in the same row of the stepped gradual change aperture pinhole array is the same; the horizontal aperture width of the continuous multiple rows of pinholes positioned in the center of the stepped gradual change aperture pinhole array is the same; the horizontal aperture width H i of the ith row of pinholes in the stepped gradual change aperture pinhole array is calculated by the following formula
（1）
Wherein p is the pitch of pinholes, a is the number of columns of continuous multi-column pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array, w is the horizontal aperture width of continuous multi-column pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array, m is the number of pinholes in the horizontal direction of the stepped gradient aperture pinhole array, l is the viewing distance, and g is the distance between the display screen and the stepped gradient aperture pinhole array; as shown in fig. 4, the polarization grating is formed by alternately arranging grating units I and II in a horizontal direction, wherein the polarization direction of the grating unit I is orthogonal to that of the grating unit II; the display screen is used for displaying the micro-image array; as shown in fig. 5, the micro-image array includes an image element I and an image element II; the pitch of the image element I and the image element II is equal to the pitch of the pinholes; a plurality of image elements I which are continuously arranged in the horizontal direction and a plurality of pinholes which are continuously arranged in the horizontal direction are correspondingly aligned with the same grating unit I; a plurality of image elements II which are continuously arranged in the horizontal direction and a plurality of pinholes which are continuously arranged in the horizontal direction are correspondingly aligned with the same grating unit II; reconstructing a 3D image I by the image element I through the grating unit I and the pinhole corresponding to the image element I; reconstructing a 3D image II by the image element II through the grating unit II and the pinhole corresponding to the image element II; the polarization direction of the polarized glasses I is the same as that of the grating unit I, and the polarization direction of the polarized glasses II is the same as that of the grating unit II; only the 3D image I can be seen through the polarization glasses I and only the 3D image II can be seen through the polarization glasses II.
Preferably, the horizontal widths of the display screen, the polarization grating and the stepped gradient aperture pinhole array are equal, and the vertical widths of the display screen, the polarization grating and the stepped gradient aperture pinhole array are equal.
Preferably, the number of pinholes which are continuously arranged in the horizontal direction and correspond to the same grating unit I is equal to half of the number of continuous multiple rows of pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array; the number of pinholes which are continuously arranged in the horizontal direction corresponding to the same grating unit II is equal to half the number of continuous multiple rows of pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array.
Preferably, the number of columns t of grating units in the polarization grating is calculated by the following formula
（2）
The pitch s of the grating units I and II is calculated by the following formula
（3）
Where p is the pitch of the pinholes, a is the number of columns of continuous multiple columns of pinholes of the same horizontal aperture width at the center of the stepped graded aperture pinhole array, and m is the number of pinholes in the horizontal direction of the stepped graded aperture pinhole array.
Preferably, the horizontal viewing angle of the 3D image I is the same as that of the 3D image II; the vertical viewing angle of the 3D image I is the same as that of the 3D image II; the horizontal viewing angle θ 1 and the vertical viewing angle θ 2 of the 3D image I and the 3D image II are calculated by the following formula
（4）
（5）
Where p is the pitch of the pinholes, a is the number of columns of continuous multiple columns of pinholes with the same horizontal aperture width at the center of the stepped graded aperture pinhole array, w is the horizontal aperture width of continuous multiple columns of pinholes with the same horizontal aperture width at the center of the stepped graded aperture pinhole array, l is the viewing distance, v is the vertical aperture width of the pinholes, g is the spacing between the display screen and the stepped graded aperture pinhole array, and n is the number of pinholes in the vertical direction of the stepped graded aperture pinhole array.
The pitch of the pinholes is p=10mm, the number of columns of continuous multi-column pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array is a=4, the horizontal aperture width of the continuous multi-column pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array is w=2mm, the vertical aperture width of the pinholes is v=3mm, the number of pinholes in the horizontal direction of the stepped gradient aperture pinhole array is m=12, the number of pinholes in the vertical direction of the stepped gradient aperture pinhole array is n=10, the viewing distance is l=790 mm, and the distance between the display screen and the stepped gradient aperture pinhole array is g=10mm. Obtained according to the formula (1), the horizontal aperture width of the 1 st to 12 th row pinholes in the stepped gradual change aperture pinhole array is 1mm respectively 1mm, 2mm 2mm, 1mm; the number of columns of grating units in the polarization grating is 6 according to the formula (2); the horizontal pitch of the grating units I and II is 20mm according to the formula (3); the horizontal viewing angle of the 3D image I and the 3D image II is 44 degrees according to the formula (4); the vertical viewing angle of the 3D image I and the 3D image II is 40 ° according to formula (5).

Claims (2)

1. The double-vision 3D display device based on the stepped gradient aperture pinhole array is characterized by comprising a display screen, a polarization grating, a stepped gradient aperture pinhole array, a polarization glasses I and a polarization glasses II; the display screen, the polarization grating and the stepped gradient aperture pinhole array are arranged in parallel and aligned correspondingly; the polarization grating is positioned between the display screen and the stepped gradient aperture pinhole array and is attached to the display screen; the horizontal widths of the display screen, the polarization grating and the stepped gradient aperture pinhole array are equal, and the vertical widths of the display screen, the polarization grating and the stepped gradient aperture pinhole array are equal; the horizontal aperture width of pinholes in the same row of the stepped gradual change aperture pinhole array is the same; the horizontal aperture width of the continuous multiple rows of pinholes positioned in the center of the stepped gradual change aperture pinhole array is the same; the horizontal aperture width H i of the ith row of pinholes in the stepped gradual change aperture pinhole array is calculated by the following formula
Wherein the floor function is a downward rounding function, p is the pitch of pinholes, a is the number of columns of continuous multiple columns of pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array, w is the horizontal aperture width of continuous multiple columns of pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array, m is the number of pinholes in the horizontal direction of the stepped gradient aperture pinhole array, l is the viewing distance, and g is the distance between the display screen and the stepped gradient aperture pinhole array; the polarization grating is formed by alternately arranging grating units I and grating units II in the horizontal direction, and the polarization direction of the grating unit I is orthogonal to the polarization direction of the grating unit II; the display screen is used for displaying the micro-image array; the micro-image array comprises an image element I and an image element II; the pitch of the image element I and the image element II is equal to the pitch of the pinholes; a plurality of image elements I which are continuously arranged in the horizontal direction and a plurality of pinholes which are continuously arranged in the horizontal direction are correspondingly aligned with the same grating unit I; a plurality of image elements II which are continuously arranged in the horizontal direction and a plurality of pinholes which are continuously arranged in the horizontal direction are correspondingly aligned with the same grating unit II; the number of pinholes which are continuously arranged in the horizontal direction and correspond to the same grating unit I is equal to half of the number of the continuous multiple-row pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array; the number of pinholes which are continuously arranged in the horizontal direction and correspond to the same grating unit II is equal to half of the number of the continuous multiple-row pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array; the number of columns t of grating units in the polarization grating is calculated by
The pitch s of the grating units I and II is calculated by the following formula
Wherein p is the pitch of pinholes, a is the number of columns of continuous multiple columns of pinholes with the same horizontal aperture width at the center of the stepped gradient aperture pinhole array, and m is the number of pinholes in the horizontal direction of the stepped gradient aperture pinhole array; reconstructing a 3D image I by the image element I through the grating unit I and the pinhole corresponding to the image element I; reconstructing a 3D image II by the image element II through the grating unit II and the pinhole corresponding to the image element II; the polarization direction of the polarized glasses I is the same as that of the grating unit I, and the polarization direction of the polarized glasses II is the same as that of the grating unit II; only the 3D image I can be seen through the polarization glasses I and only the 3D image II can be seen through the polarization glasses II.
2. A dual view 3D display device based on a stepped graded aperture pinhole array according to claim 1, wherein the horizontal viewing angle of the 3D image I is the same as the horizontal viewing angle of the 3D image II; the vertical viewing angle of the 3D image I is the same as that of the 3D image II; the horizontal viewing angle θ 1 and the vertical viewing angle θ 2 of the 3D image I and the 3D image II are calculated by the following formula
Where p is the pitch of the pinholes, a is the number of columns of continuous multiple columns of pinholes with the same horizontal aperture width at the center of the stepped graded aperture pinhole array, w is the horizontal aperture width of continuous multiple columns of pinholes with the same horizontal aperture width at the center of the stepped graded aperture pinhole array, l is the viewing distance, v is the vertical aperture width of the pinholes, g is the spacing between the display screen and the stepped graded aperture pinhole array, and n is the number of pinholes in the vertical direction of the stepped graded aperture pinhole array.
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CN112485911B (en) * 2021-01-11 2024-02-23 成都工业学院 Double-vision 3D display device based on stepped gradient aperture pinhole array
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CN114791678B (en) * 2022-05-18 2024-05-14 成都工业学院 Double-vision 3D display device based on double-gradual-change aperture slit grating

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