CN114895479A - Wide-viewing-angle double-view 3D display device - Google Patents
Wide-viewing-angle double-view 3D display device Download PDFInfo
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- CN114895479A CN114895479A CN202210535748.6A CN202210535748A CN114895479A CN 114895479 A CN114895479 A CN 114895479A CN 202210535748 A CN202210535748 A CN 202210535748A CN 114895479 A CN114895479 A CN 114895479A
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- 230000010287 polarization Effects 0.000 claims abstract description 117
- 239000011521 glass Substances 0.000 claims abstract description 33
- 238000003384 imaging method Methods 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
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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
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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
- G02B30/26—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
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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
- G02B30/34—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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Abstract
The invention discloses a wide-view angle double-view 3D display device, wherein a display screen is used for displaying a composite image element array; the polarization grating comprises a polarization unit I and a polarization unit II; a plurality of continuously arranged image elements I are correspondingly aligned with the same polarization unit I; a plurality of image elements II which are arranged in series are correspondingly aligned with the same polarization unit II; the polarization unit I is used for polarizing the light emitted by the image element I, and the polarization unit II is used for polarizing the light emitted by the image element II; the slit grating I is used for light path modulation; the imaging areas I of the image elements I are all overlapped at the optimal viewing distance; the imaging areas II of the image elements II are all overlapped at the optimal viewing distance; only the 3D image I can be observed through the polarized glasses I, and only the 3D image II can be observed through the polarized glasses II; the viewing angles of the 3D image I and the 3D image II are both independent of the number of the slits II and are both proportional to the aperture width of the slits II.
Description
Technical Field
The present invention relates to a 3D display technology, and more particularly, to a wide viewing angle dual-view 3D display device.
Background
Chinese patent CN202110355916.9 proposes a dual-view 3D display method based on polarized glasses, which realizes dual-view 3D display by integrating imaging display devices; the integrated imaging display device comprises a display screen, a polarization grating, a pinhole array, a pair of polarization glasses I and a pair of polarization glasses II; the display screen, the polarization grating and the pinhole array are sequentially arranged in parallel and are correspondingly aligned; the polarization grating is attached to the display screen; the polarization grating is composed of grating units I and II which are alternately arrangedThe 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 discrete composite image element array; the discrete composite image element array comprises a plurality of image elements I and image elements II which are arranged discretely; the width of picture element I is equal to the width of picture element II; the interval width of the adjacent image element I, the interval width of the adjacent image element II and the interval widths of the adjacent image element I and the adjacent image element II are equal; width of picture element IqThe width of the interval between adjacent picture elements IaAnd pitch of the pin holepSatisfies the following formula
Wherein the content of the first and second substances,lis the best viewing distance for the user,gis the distance between the display screen and the pinhole array; a plurality of image elements I which are discretely arranged in the horizontal direction are correspondingly aligned with the same grating unit I; a plurality of image elements II which are discretely arranged in the horizontal direction are correspondingly aligned with the same grating unit II; the number of the image elements I which correspond to the same raster unit I and are discretely arranged in the horizontal direction is equal to the number of the image elements II which correspond to the same raster unit II and are discretely arranged in the horizontal direction; pitch of grating unit I and grating unit IIsCalculated from the following formula
Wherein the content of the first and second substances,kthe number of image elements I which are discretely arranged in the horizontal direction and correspond to the same raster unit I; reconstructing a 3D image I by the image element I through a grating unit I and a pinhole corresponding to the image element I; reconstructing a 3D image II by the image element II through a corresponding grating unit II and a pinhole; the imaging areas of the image elements I are all overlapped at the optimal viewing distance; the imaging areas of the image elements II are all overlapped at the optimal viewing distance; only 3D image I can be seen through polarized glasses I and only 3D image II can be seen through polarized glasses II. Width of picture element IqAnd the width of the interval between adjacent picture elements IaAre respectively as
Wherein the content of the first and second substances,wis the aperture width of the pinhole; as can be seen from FIG. 1 of the Chinese patent CN202110355916.9, the horizontal viewing angle of the 3D image Iθ 1 And horizontal viewing perspective of 3D image IIθ 3 Calculated from the following formula
In the prior art, the horizontal viewing angles of the 3D image I and the 3D image II are both independent of the number of pinholes and the aperture width of the pinholes.
Disclosure of Invention
The invention provides a wide-view-angle double-view 3D display device, which is characterized by comprising a display screen, a polarization grating, a slit grating I, a slit grating II, polarization glasses I and polarization glasses II, wherein the display screen is as shown in figure 1; the display screen, the polarization grating, the slit grating I and the slit grating II are sequentially arranged in parallel; the polarization grating is attached to the display screen; the centers of the display screen, the polarization grating, the slit grating I and the slit grating II are correspondingly aligned; the horizontal widths of the display screen and the polarization grating are the same; the display screen is used for displaying the composite image element array; the composite picture element array comprises picture elements I and II, as shown in fig. 2; the number of picture elements I is equal to the number of picture elements II; the pitch of picture elements I is equal to the pitch of picture elements II; the polarization grating comprises a polarization unit I and a polarization unit II, as shown in FIG. 3; the number of the polarization units I is equal to that of the polarization units II; the pitch of the polarizing unit I is equal to that of the polarizing unit II; the polarization units I and the polarization units II are alternately arranged; the polarization direction of the polarization unit I is orthogonal to that of the polarization unit II; a plurality of continuously arranged image elements I are correspondingly aligned with the same polarization unit I; a plurality of successively arranged picture elements II with the same polarizationCorrespondingly aligning the units II; the number of the plurality of consecutively arranged picture elements I corresponding to the same polarizing unit I is equal to the number of the plurality of consecutively arranged picture elements II corresponding to the same polarizing unit II; the polarization unit I is used for polarizing the light emitted by the image element I, and the polarization unit II is used for polarizing the light emitted by the image element II; the slit grating I is used for light path modulation; the number of slits I is equal to twice the number of picture elements I; the slit grating II is used for imaging; the number of the slits II is equal to the number of the slits I; pitch of the slit IqPitch of the slit IIsThe pitch of the polarizing unit ItAnd aperture width of the slit IwCalculated from the following formula
Wherein the content of the first and second substances,pis the pitch of the picture elements II,lis the best viewing distance for the user,gis the distance between the display screen and the slit grating II,dis the distance between the slit grating I and the slit grating II,kis the number of a plurality of consecutively arranged picture elements I corresponding to one and the same polarization unit I,vis the aperture width of the slit II; the distance between the slit grating I and the slit grating IIdSatisfies the following formula
Part of light emitted by the image element I passes through the polarization unit I in turnProjecting the corresponding slits I and II to an imaging region I to reconstruct a 3D image I, wherein the imaging regions I of the image elements I are overlapped at the optimal viewing distance; a part of light rays emitted by the image element II are projected to an imaging region II through the polarization unit II and the corresponding slit I and slit II in sequence to reconstruct a 3D image II, and the imaging regions II of the image element II are overlapped at the optimal viewing distance; the polarization direction of the polarization glasses I is the same as that of the polarization unit I, and the polarization direction of the polarization glasses II is the same as that of the polarization unit II; the polarization glasses I and the polarization glasses II are used for separating the 3D image I and the 3D image II; only the 3D image I can be observed through the polarized glasses I, and only the 3D image II can be observed through the polarized glasses II; viewing perspective of 3D image I at optimal viewing distanceθ 1 And viewing perspective of 3D image IIθ 2 Is composed of
The viewing angles of the 3D image I and the 3D image II are both independent of the number of the slits II and are both proportional to the aperture width of the slits II.
Preferably, the vertical widths of the display screen, the polarization grating, the slit grating I and the slit grating II are the same.
Drawings
FIG. 1 is a schematic view of the present invention
FIG. 2 is a schematic diagram of a composite image element array according to the present invention
FIG. 3 is a schematic diagram of a polarization grating of the present invention
The reference numbers in the figures are:
1. the display screen, 2, polarization grating, 3, slit grating I, 4, slit grating II, 5, polarization glasses I, 6, polarization glasses II, 7, image element I, 8, image element II, 9, polarization unit I, 10, polarization unit II.
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 wide-view-angle double-view 3D display device, which is characterized by comprising a display screen, a polarization grating, a slit grating I, a slit grating II, polarization glasses I and polarization glasses II, wherein the display screen is as shown in figure 1; the display screen, the polarization grating, the slit grating I and the slit grating II are sequentially arranged in parallel; the polarization grating is attached to the display screen; the centers of the display screen, the polarization grating, the slit grating I and the slit grating II are correspondingly aligned; the horizontal widths of the display screen and the polarization grating are the same; the display screen is used for displaying the composite image element array; the composite picture element array comprises picture elements I and II, as shown in fig. 2; the number of picture elements I is equal to the number of picture elements II; the pitch of picture elements I is equal to the pitch of picture elements II; the polarization grating comprises a polarization unit I and a polarization unit II, as shown in FIG. 3; the number of the polarization units I is equal to that of the polarization units II; the pitch of the polarizing unit I is equal to that of the polarizing unit II; the polarization units I and the polarization units II are alternately arranged; the polarization direction of the polarization unit I is orthogonal to that of the polarization unit II; a plurality of continuously arranged image elements I are correspondingly aligned with the same polarization unit I; a plurality of image elements II which are arranged in series are correspondingly aligned with the same polarization unit II; the number of the plurality of consecutively arranged picture elements I corresponding to the same polarizing unit I is equal to the number of the plurality of consecutively arranged picture elements II corresponding to the same polarizing unit II; the polarization unit I is used for polarizing the light emitted by the image element I, and the polarization unit II is used for polarizing the light emitted by the image element II; the slit grating I is used for light path modulation; the number of slits I is equal to twice the number of picture elements I; the slit grating II is used for imaging; the number of the slits II is equal to the number of the slits I; pitch of the slit IqPitch of the slit IIsThe pitch of the polarizing unit ItAnd aperture width of the slit IwCalculated from the following formula
Wherein the content of the first and second substances,pis the pitch of the picture elements II,lis the best viewing distance for the user,gis the distance between the display screen and the slit grating II,dis the distance between the slit grating I and the slit grating II,kis the number of a plurality of consecutively arranged picture elements I corresponding to the same polarization unit I,vis the aperture width of the slit II; the distance between the slit grating I and the slit grating IIdSatisfies the following formula
A part of light rays emitted by the image element I are projected to an imaging region I to reconstruct a 3D image I sequentially through the polarization unit I and the corresponding slit I and slit II, and the imaging region I of the image element I is overlapped at the optimal viewing distance; a part of light rays emitted by the image element II are projected to an imaging region II through the polarization unit II and the corresponding slit I and slit II in sequence to reconstruct a 3D image II, and the imaging regions II of the image element II are overlapped at the optimal viewing distance; the polarization direction of the polarization glasses I is the same as that of the polarization unit I, and the polarization direction of the polarization glasses II is the same as that of the polarization unit II; the polarization glasses I and the polarization glasses II are used for separating the 3D image I and the 3D image II; only 3D image I can be observed through polarized glasses I, and only 3D image I can be observed through polarized glasses III; viewing perspective of 3D image I at optimal viewing distanceθ 1 And viewing perspective of 3D image IIθ 2 Is composed of
The viewing angles of the 3D image I and the 3D image II are both independent of the number of the slits II and are both proportional to the aperture width of the slits II.
Preferably, the vertical widths of the display screen, the polarization grating, the slit grating I and the slit grating II are the same.
The pitch of the image element II is 10mm, the distance between the display screen and the slit grating II is 10mm, the distance between the slit grating I and the slit grating II is 5mm, the aperture width of the slit II is 2mm, the number of a plurality of continuously arranged image elements I corresponding to the same polarizing unit I is 4, the optimal viewing distance is 190mm, and then the pitch of the slit I is 9.75mm calculated by the formula (1); the pitch of the slit II was 9.5mm as calculated from formula (2); the pitch of the polarizing element I was 40mm as calculated from formula (3); the aperture width of the slit I is 4mm as calculated by the formula (4); the viewing angles of the 3D image I and the 3D image II are both 62 ° calculated by equation (6). In the prior art scheme based on the above parameters, the viewing angles of the 3D image I and the 3D image II are both 52 °.
Claims (2)
1. The wide-view-angle double-view 3D display device is characterized by comprising a display screen, a polarization grating, a slit grating I, a slit grating II, a pair of polarization glasses I and a pair of polarization glasses II; the display screen, the polarization grating, the slit grating I and the slit grating II are sequentially arranged in parallel; the polarization grating is attached to the display screen; the centers of the display screen, the polarization grating, the slit grating I and the slit grating II are correspondingly aligned; the horizontal widths of the display screen and the polarization grating are the same; the display screen is used for displaying the composite image element array; the composite image element array comprises an image element I and an image element II; the number of picture elements I is equal to the number of picture elements II; the pitch of picture elements I is equal to the pitch of picture elements II; the polarization grating comprises a polarization unit I and a polarization unit II; number of polarizing units IEqual to the number of polarizing units II; the pitch of the polarizing unit I is equal to that of the polarizing unit II; the polarization units I and the polarization units II are alternately arranged; the polarization direction of the polarization unit I is orthogonal to that of the polarization unit II; a plurality of continuously arranged image elements I are correspondingly aligned with the same polarization unit I; a plurality of image elements II which are arranged in series are correspondingly aligned with the same polarization unit II; the number of the plurality of consecutively arranged picture elements I corresponding to the same polarizing unit I is equal to the number of the plurality of consecutively arranged picture elements II corresponding to the same polarizing unit II; the polarization unit I is used for polarizing the light emitted by the image element I, and the polarization unit II is used for polarizing the light emitted by the image element II; the slit grating I is used for light path modulation; the number of slits I is equal to twice the number of picture elements I; the slit grating II is used for imaging; the number of the slits II is equal to the number of the slits I; pitch of the slit IqPitch of the slit IIsThe pitch of the polarizing unit ItAnd aperture width of the slit IwCalculated from the following formula
Wherein the content of the first and second substances,pis the pitch of the picture elements II,lis the best viewing distance for the user,gis the distance between the display screen and the slit grating II,dis the distance between the slit grating I and the slit grating II,kis the number of a plurality of consecutively arranged picture elements I corresponding to the same polarization unit I,vis the aperture width of the slit II;the distance between the slit grating I and the slit grating IIdSatisfies the following formula
A part of light rays emitted by the image element I are projected to an imaging region I to reconstruct a 3D image I sequentially through the polarization unit I and the corresponding slit I and slit II, and the imaging region I of the image element I is overlapped at the optimal viewing distance; a part of light rays emitted by the image element II are projected to an imaging region II through the polarization unit II and the corresponding slit I and slit II in sequence to reconstruct a 3D image II, and the imaging regions II of the image element II are overlapped at the optimal viewing distance; the polarization direction of the polarization glasses I is the same as that of the polarization unit I, and the polarization direction of the polarization glasses II is the same as that of the polarization unit II; the polarization glasses I and the polarization glasses II are used for separating the 3D image I and the 3D image II; only the 3D image I can be observed through the polarized glasses I, and only the 3D image II can be observed through the polarized glasses II; viewing perspective of 3D image I at optimal viewing distanceθ 1 And viewing perspective of 3D image IIθ 2 Is composed of
The viewing angles of the 3D image I and the 3D image II are both independent of the number of the slits II and are both proportional to the aperture width of the slits II.
2. The wide-viewing-angle dual-view 3D display device according to claim 1, wherein the vertical widths of the display screen, the polarization grating, the slit grating I and the slit grating II are the same.
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