CN112485918A - Double-vision 3D display device based on gradient pitch polarization array - Google Patents
Double-vision 3D display device based on gradient pitch polarization array Download PDFInfo
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- CN112485918A CN112485918A CN202110027692.9A CN202110027692A CN112485918A CN 112485918 A CN112485918 A CN 112485918A CN 202110027692 A CN202110027692 A CN 202110027692A CN 112485918 A CN112485918 A CN 112485918A
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- 230000010287 polarization Effects 0.000 title claims abstract description 107
- 208000003164 Diplopia Diseases 0.000 title description 4
- 208000029444 double vision Diseases 0.000 title description 4
- 239000011295 pitch Substances 0.000 claims abstract description 140
- 239000011521 glass Substances 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 239000000126 substance Substances 0.000 claims description 9
- 238000003384 imaging method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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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
- G02B30/33—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 directional light or back-light sources
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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
Abstract
The invention discloses a double-view 3D display device based on a gradient pitch polarization array, which comprises an active light-emitting display screen, a gradient pitch polarization array, a transmission type display screen, a pair of polarization glasses I and a pair of polarization glasses II, wherein the active light-emitting display screen is arranged on the front side of the display screen; the horizontal pitches of the point light sources in the same column of the gradual-change pitch point light source array are the same; the horizontal pitch of the point light source in the gradual-change pitch point light source array is gradually increased from the middle to two sides; the light emitted by the point light source illuminates the image element I through the corresponding polarization unit I to reconstruct a 3D image I; the light rays emitted by the point light sources are used for reconstructing a 3D image II by illuminating the image element II through the corresponding polarization unit II; 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; only 3D image I can be seen through polarized glasses I and only 3D image II can be seen through polarized glasses II.
Description
Technical Field
The present invention relates to 3D display, and more particularly, to a dual view 3D display device based on a graded pitch polarizing array.
Background
The integrated imaging double-vision 3D display is the fusion of a double-vision display technology and an integrated imaging 3D display technology. It may enable the viewer to see different 3D pictures in different viewing directions. However, the conventional integrated imaging dual-view 3D display has a disadvantage that two viewing zones are separated. The viewer needs to move the viewing position to see another picture, and the application of the integrated imaging dual-view 3D display in home entertainment equipment and medical equipment is limited to a certain extent. Two different 3D pictures can be separated by adopting the gradient pitch polarization array and matched polarization glasses, and a viewer can see different 3D pictures by switching different polarization glasses.
The traditional integrated imaging double-view 3D display device based on the gradient pitch polarization array has the advantages of no row or column pixel loss, wide viewing angle and the like. However, the conventional integrated imaging dual-view 3D display device based on the gradual-pitch polarization array has the following disadvantages: the horizontal pitch of the polarization unit is equal to the horizontal pitch of the point light sources corresponding thereto. The horizontal pitches of two adjacent point light sources in the horizontal direction of the gradual-change pitch point light source array are changed in an equal proportion relation, and the manufacturing difficulty and the cost of the gradual-change pitch polarization array are increased. Further, the number of the polarization units in the horizontal direction of the gradient pitch polarization array is equal to the number of the point light sources in the horizontal direction of the gradient pitch point light source array. The horizontal resolution of the integrated imaging dual-view 3D display device is equal to the number of point light sources in the horizontal direction of the gradual-pitch point light source array. Thus, the greater the horizontal resolution, the greater the difficulty and cost of manufacturing the graded-pitch polarizing array.
Disclosure of Invention
The invention provides a double-view 3D display device based on a gradient pitch polarization array, which is characterized by comprising an active light-emitting display screen, a gradient pitch polarization array, a transmission type display screen, a pair of polarized glasses I and a pair of polarized glasses II, wherein the display screen is a three-dimensional display screen; the active light-emitting display screen, the gradient pitch polarizing array and the transmission type display screen are sequentially arranged in parallel and are correspondingly aligned; the gradual change pitch polarization array is attached to the active light-emitting display screen; the horizontal width of the active light-emitting display screen, the gradual change pitch polarization array and the transmission type display screen are the same; the active light-emitting display screen is used for displaying a gradual pitch point light source array; the horizontal pitches of the point light sources in the same column of the gradual-change pitch point light source array are the same; the horizontal pitch of the point light source in the gradual-change pitch point light source array is gradually increased from the middle to two sides; first in the gradual change pitch point light source arrayiHorizontal pitch of column point light sourcesP i Calculated from the following formula
Wherein the content of the first and second substances,pis a point light at the center of a gradual pitch point light source arrayThe horizontal pitch of the sources is such that,mis the number of point light sources in the horizontal direction of the gradual pitch point light source array,lis the viewing distance, the distance between the viewer,gthe distance between the active light-emitting display screen and the transmission type display screen; the transmission type display screen is used for displaying the micro image array with the gradually changed pitch; the graded-pitch microimage array comprises image elements I and image elements II, as shown in FIG. 3; the horizontal pitch of the image element I is equal to the horizontal pitch of the point light source corresponding to the image element I; the horizontal pitch of the image element II is equal to the horizontal pitch of the point light source corresponding to the image element II; the gradient pitch polarization array is formed by alternately arranging a polarization unit I and a polarization unit II in the horizontal direction and the vertical direction, as shown in the figure 4; the polarization direction of the polarization unit I is orthogonal to that of the polarization unit II; a plurality of point light sources which are continuously arranged in the horizontal direction and a plurality of corresponding image elements I which are continuously arranged in the horizontal direction are correspondingly aligned with the same polarization unit I; a plurality of point light sources which are continuously arranged in the horizontal direction and a plurality of corresponding image elements II which are continuously arranged in the horizontal direction are correspondingly aligned with the same polarization unit II; the light emitted by the point light source illuminates the image element I through the corresponding polarization unit I to reconstruct a 3D image I; the light rays emitted by the point light sources are used for reconstructing a 3D image II by illuminating the image element II through the corresponding polarization unit II; 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; only 3D image I can be seen through polarized glasses I and only 3D image II can be seen through polarized glasses II.
Preferably, the number of point light sources arranged in series in the horizontal direction corresponding to the same polarizing unit I is equal to the number of point light sources arranged in series in the horizontal direction corresponding to the same polarizing unit II.
Preferably, the number of the polarizing units in the horizontal direction of the gradient pitch polarizing arraytCalculated from the following formula
In a graded-pitch polarizing arrayjHorizontal pitch of column polarization unitS j Calculated from the following formula
Wherein the content of the first and second substances,P i is the first of the gradual change pitch point light source arrayiThe horizontal pitch of the column of point light sources,mis the number of point light sources in the horizontal direction of the gradual pitch point light source array,ais the number of point light sources arranged in series in the horizontal direction corresponding to the same polarization unit I.
Preferably, the vertical pitches of the polarization units I and II are equal to the vertical pitch of the point light sources.
Preferably, the 3D image I and the 3D image II have the same horizontal viewing angle; the vertical viewing angles of the 3D image I and the 3D image II are the same; horizontal viewing angle of 3D image I and 3D image IIθ 1And vertical viewing angleθ 2Calculated from the following formula
Wherein the content of the first and second substances,pis the horizontal pitch of the point light sources located at the center of the gradual pitch point light source array,qis the vertical pitch of the point light sources,wis the width of the point light source,nis the number of point light sources in the vertical direction of the gradual pitch point light source array,lis the viewing distance, the distance between the viewer,gis the distance between the active light-emitting display screen and the transmission type display screen.
Drawings
FIG. 1 is a schematic diagram of the structure and horizontal parameters of the present invention
FIG. 2 is a schematic diagram of the structure and vertical parameters of the present invention
FIG. 3 is a schematic structural diagram of a micro image array with a gradually changing pitch according to the present invention
FIG. 4 is a schematic structural diagram of a graded-pitch polarization array according to the present invention
The reference numbers in the figures are:
1. the display comprises an active light-emitting display screen, 2 a gradient pitch polarizing array, 3 a transmission display screen, 4 polarizing glasses I, 5 polarizing glasses II, 6 image elements I, 7 image elements II, 8 polarizing units I, 9 polarizing units 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 below with reference to a detailed description of an exemplary embodiment of a dual-view 3D display device based on a graded-pitch polarizing array according to the present 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 double-view 3D display device based on a gradient pitch polarization array, which is characterized by comprising an active light-emitting display screen, a gradient pitch polarization array, a transmission type display screen, a pair of polarized glasses I and a pair of polarized glasses II, wherein the display screen is a three-dimensional display screen; the active light-emitting display screen, the gradient pitch polarizing array and the transmission type display screen are sequentially arranged in parallel and are correspondingly aligned; the gradual change pitch polarization array is attached to the active light-emitting display screen; the horizontal width of the active light-emitting display screen, the gradual change pitch polarization array and the transmission type display screen are the same; the active light-emitting display screen is used for displaying a gradual pitch point light source array; the horizontal pitches of the point light sources in the same column of the gradual-change pitch point light source array are the same; the horizontal pitch of the point light source in the gradual-change pitch point light source array is gradually increased from the middle to two sides; first in the gradual change pitch point light source arrayiHorizontal pitch of column point light sourcesP i Calculated from the following formula
Wherein the content of the first and second substances,pis the horizontal pitch of the point light sources located at the center of the gradual pitch point light source array,mis the number of point light sources in the horizontal direction of the gradual pitch point light source array,lis the viewing distance, the distance between the viewer,gthe distance between the active light-emitting display screen and the transmission type display screen; the transmission type display screen is used for displaying the micro image array with the gradually changed pitch; the graded-pitch microimage array comprises image elements I and image elements II, as shown in FIG. 3; the horizontal pitch of the image element I is equal to the horizontal pitch of the point light source corresponding to the image element I; the horizontal pitch of the image element II is equal to the horizontal pitch of the point light source corresponding to the image element II; the gradient pitch polarization array is formed by alternately arranging a polarization unit I and a polarization unit II in the horizontal direction and the vertical direction, as shown in the figure 4; the polarization direction of the polarization unit I is orthogonal to that of the polarization unit II; a plurality of point light sources which are continuously arranged in the horizontal direction and a plurality of corresponding image elements I which are continuously arranged in the horizontal direction are correspondingly aligned with the same polarization unit I; a plurality of point light sources which are continuously arranged in the horizontal direction and a plurality of corresponding image elements II which are continuously arranged in the horizontal direction are correspondingly aligned with the same polarization unit II; the light emitted by the point light source illuminates the image element I through the corresponding polarization unit I to reconstruct a 3D image I; the light rays emitted by the point light sources are used for reconstructing a 3D image II by illuminating the image element II through the corresponding polarization unit II; 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; only 3D image I can be seen through polarized glasses I and only 3D image II can be seen through polarized glasses II.
Preferably, the number of point light sources arranged in series in the horizontal direction corresponding to the same polarizing unit I is equal to the number of point light sources arranged in series in the horizontal direction corresponding to the same polarizing unit II.
Preferably, the number of the polarizing units in the horizontal direction of the gradient pitch polarizing arraytCalculated from the following formula
In a graded-pitch polarizing arrayjHorizontal pitch of column polarization unitS j Calculated from the following formula
Wherein the content of the first and second substances,P i is the first of the gradual change pitch point light source arrayiThe horizontal pitch of the column of point light sources,mis the number of point light sources in the horizontal direction of the gradual pitch point light source array,ais the number of point light sources arranged in series in the horizontal direction corresponding to the same polarization unit I.
Preferably, the vertical pitches of the polarization units I and II are equal to the vertical pitch of the point light sources.
Preferably, the 3D image I and the 3D image II have the same horizontal viewing angle; the vertical viewing angles of the 3D image I and the 3D image II are the same; horizontal viewing angle of 3D image I and 3D image IIθ 1And vertical viewing angleθ 2Calculated from the following formula
Wherein the content of the first and second substances,pis the horizontal pitch of the point light sources located at the center of the gradual pitch point light source array,qis the vertical pitch of the point light sources,wis the width of the point light source,nis the number of point light sources in the vertical direction of the gradual pitch point light source array,lis the viewing distance, the distance between the viewer,gis the distance between the active light-emitting display screen and the transmission type display screen.
Level of point light source at center of graded pitch point light source arrayA pitch ofp=10mm, the number of point light sources in the horizontal direction of the gradual pitch point light source array ism=9, number of point light sources in vertical direction of gradient pitch point light source arrayn=6, the number of point light sources arranged continuously in the horizontal direction corresponding to the same polarization unit I isa=3, viewing distance ofl=1010mm, the distance between the active light-emitting display panel and the transmissive display panel isg=10mm, width of point light sourcew=2mm, vertical pitch of point light sourcesq=10 mm. According to the formula (1), the horizontal pitches of the 1 st to 9 th rows of point light source arrays in the gradual-change pitch point light source array are respectively 10.4mm, 10.3mm, 10.2mm, 10.1mm, 10mm, 10.1mm, 10.2mm, 10.3mm and 10.4 mm; obtaining the number of the polarization units in the horizontal direction of the gradient pitch polarization array as 3 according to the formula (2); obtaining the horizontal pitches of the 1 st to 3 rd rows of polarization units in the gradient pitch polarization array according to the formula (3) as 30.9mm, 30.2mm and 30.9mm respectively; obtaining a horizontal viewing angle of 44 degrees between the 3D image I and the 3D image II according to the formula (4); as a result of equation (5), the vertical viewing angle of the 3D image I and the 3D image II is 62 °.
Claims (5)
1. The double-view 3D display device based on the gradient pitch polarization array is characterized by comprising an active light-emitting display screen, the gradient pitch polarization array, a transmission type display screen, a pair of polarization glasses I and a pair of polarization glasses II; the active light-emitting display screen, the gradient pitch polarizing array and the transmission type display screen are sequentially arranged in parallel and are correspondingly aligned; the gradual change pitch polarization array is attached to the active light-emitting display screen; the horizontal width of the active light-emitting display screen, the gradual change pitch polarization array and the transmission type display screen are the same; the active light-emitting display screen is used for displaying a gradual pitch point light source array; the horizontal pitches of the point light sources in the same column of the gradual-change pitch point light source array are the same; the horizontal pitch of the point light source in the gradual-change pitch point light source array is gradually increased from the middle to two sides; first in the gradual change pitch point light source arrayiHorizontal pitch of column point light sourcesP i Calculated from the following formula
Wherein the content of the first and second substances,pis the horizontal pitch of the point light sources located at the center of the gradual pitch point light source array,mis the number of point light sources in the horizontal direction of the gradual pitch point light source array,lis the viewing distance, the distance between the viewer,gthe distance between the active light-emitting display screen and the transmission type display screen; the transmission type display screen is used for displaying the micro image array with the gradually changed pitch; the micro image array with gradually changed pitches comprises an image element I and an image element II; the horizontal pitch of the image element I is equal to the horizontal pitch of the point light source corresponding to the image element I; the horizontal pitch of the image element II is equal to the horizontal pitch of the point light source corresponding to the image element II; the gradient pitch polarization array is formed by alternately arranging a polarization unit I and a polarization unit II in the horizontal and vertical directions; the polarization direction of the polarization unit I is orthogonal to that of the polarization unit II; a plurality of point light sources which are continuously arranged in the horizontal direction and a plurality of corresponding image elements I which are continuously arranged in the horizontal direction are correspondingly aligned with the same polarization unit I; a plurality of point light sources which are continuously arranged in the horizontal direction and a plurality of corresponding image elements II which are continuously arranged in the horizontal direction are correspondingly aligned with the same polarization unit II; the light emitted by the point light source illuminates the image element I through the corresponding polarization unit I to reconstruct a 3D image I; the light rays emitted by the point light sources are used for reconstructing a 3D image II by illuminating the image element II through the corresponding polarization unit II; 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; only 3D image I can be seen through polarized glasses I and only 3D image II can be seen through polarized glasses II.
2. The dual-view 3D display device based on a graded-pitch polarization array according to claim 1, wherein the number of point light sources corresponding to the same polarization unit I which are continuously arranged in the horizontal direction is equal to the number of point light sources corresponding to the same polarization unit II which are continuously arranged in the horizontal direction.
3. Method according to claim 2 based on a graduated pitch polarizing arrayA dual-view 3D display device, characterized in that the number of polarizing elements in the horizontal direction of the polarization array with gradually varying pitch is variedtCalculated from the following formula
In a graded-pitch polarizing arrayjHorizontal pitch of column polarization unitS j Calculated from the following formula
Wherein the content of the first and second substances,P i is the first of the gradual change pitch point light source arrayiThe horizontal pitch of the column of point light sources,mis the number of point light sources in the horizontal direction of the gradual pitch point light source array,ais the number of point light sources arranged in series in the horizontal direction corresponding to the same polarization unit I.
4. The dual-view 3D display device based on a graded-pitch polarization array according to claim 3, wherein the vertical pitches of the polarization unit I and the polarization unit II are equal to the vertical pitch of the point light sources.
5. The dual-view 3D display device based on a graded-pitch polarization array according to claim 4, wherein the horizontal viewing angle of the 3D image I is the same as that of the 3D image II; the vertical viewing angles of the 3D image I and the 3D image II are the same; horizontal viewing angle of 3D image I and 3D image IIθ 1And vertical viewing angleθ 2Calculated from the following formula
Wherein the content of the first and second substances,pis the horizontal pitch of the point light sources located at the center of the gradual pitch point light source array,qis the vertical pitch of the point light sources,wis the width of the point light source,nis the number of point light sources in the vertical direction of the gradual pitch point light source array,lis the viewing distance, the distance between the viewer,gis the distance between the active light-emitting display screen and the transmission type display screen.
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