CN112485918B - Double-vision 3D display device based on graded pitch polarization array - Google Patents
Double-vision 3D display device based on graded pitch polarization array Download PDFInfo
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- CN112485918B CN112485918B CN202110027692.9A CN202110027692A CN112485918B CN 112485918 B CN112485918 B CN 112485918B CN 202110027692 A CN202110027692 A CN 202110027692A CN 112485918 B CN112485918 B CN 112485918B
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- 230000010287 polarization Effects 0.000 title claims abstract description 119
- 208000003164 Diplopia Diseases 0.000 title claims abstract description 7
- 208000029444 double vision Diseases 0.000 title claims abstract description 7
- 239000011295 pitch Substances 0.000 claims abstract description 138
- 239000011521 glass Substances 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000000750 progressive effect Effects 0.000 claims description 12
- 230000009977 dual effect Effects 0.000 claims description 10
- 238000003384 imaging method Methods 0.000 description 7
- 238000003491 array Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 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
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Abstract
The invention discloses a double-vision 3D display device based on a graded pitch polarization array, which comprises an active luminous display screen, a graded pitch polarization array, a transmission type display screen, polarized glasses I and polarized glasses II; the horizontal pitches of the point light sources positioned in the same column of the point light source array with the gradual pitch are the same; the horizontal pitch of the point light sources in the point light source array with the gradual pitch gradually increases from the middle to the 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 illuminate the image element II through the corresponding polarization unit II to reconstruct a 3D image II; the polarization direction of the polarized glasses I is the same as that of the polarized unit I, and the polarization direction of the polarized glasses II is the same as that of the polarized 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.
Description
Technical Field
The present invention relates to 3D displays, and more particularly to dual vision 3D display devices based on graded-pitch polarization arrays.
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 graded 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-vision 3D display device based on the graded pitch polarization array has the advantages of no row or column pixel missing, wide viewing angle and the like. However, conventional integrated imaging dual vision 3D display devices based on graded pitch polarization arrays suffer from the following drawbacks: the horizontal pitch of the polarization unit is equal to the horizontal pitch of the point light source corresponding thereto. The horizontal pitch of two adjacent point light sources in the horizontal direction of the graded pitch point light source array is changed in an equal ratio relationship, so that the manufacturing difficulty and cost of the graded pitch polarization array are increased. Further, the number of polarization units in the horizontal direction of the graded-pitch polarization array is equal to the number of point light sources in the horizontal direction of the graded-pitch point light source array. The horizontal resolution of the integrated imaging dual vision 3D display device is equal to the number of point light sources in the horizontal direction of the graded pitch point light source array. Thus, the greater the horizontal resolution, the greater the manufacturing difficulty and cost of the graded-pitch polarization array.
Disclosure of Invention
The invention provides a double-vision 3D display device based on a graded pitch polarization array, which is shown in figures 1 and 2 and is characterized by comprising an active luminous display screen, a graded pitch polarization array, a transmission type display screen, polarized glasses I and polarized glasses II; the active light-emitting display screen, the graded pitch polarization array and the transmission type display screen are sequentially arranged in parallel and are correspondingly aligned; the graded pitch polarization array is attached to the active luminous display screen; the horizontal widths of the graded pitch polarization array and the transmission type display screen are the same; the active light-emitting display screen is used for displaying the point light source array with the gradual pitch; the horizontal pitches of the point light sources positioned in the same column of the point light source array with the gradual pitch are the same; the horizontal pitch of the point light sources in the point light source array with the gradual pitch gradually increases from the middle to the two sides; horizontal pitch P of ith row of point light sources in progressive pitch point light source array i Calculated from the following formula
Wherein ceil is an upward rounding function, floor is a downward rounding function, p is a horizontal pitch of point light sources positioned at the center of the gradually-changed-pitch point light source array, m is the number of point light sources on the horizontal direction of the gradually-changed-pitch point light source array, l is a viewing distance, and g is a 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 gradual change pitch; the graded pitch micro image array comprises an image element I and an image element II, as shown in figure 3; the horizontal pitch of the image element I is equal to the horizontal pitch of the point light source corresponding thereto; the horizontal pitch of the image element II is equal to the horizontal pitch of the point light source corresponding thereto; the polarization array with the gradual pitch is formed by alternately arranging a polarization unit I and a polarization unit II in the horizontal and vertical directions, as shown in fig. 4; the polarization direction of the polarization unit I is orthogonal to the polarization direction of the polarization unit II; a plurality of point light sources which are continuously arranged in the horizontal direction and a plurality of 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 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 illuminate the image element II through the corresponding polarization unit II to reconstruct a 3D image II; the polarization direction of the polarized glasses I is the same as that of the polarized unit I, and the polarization direction of the polarized glasses II is the same as that of the polarized 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 number of point light sources consecutively arranged in the horizontal direction corresponding to the same polarization unit I is equal to the number of point light sources consecutively arranged in the horizontal direction corresponding to the same polarization unit II.
Preferably, the number t of polarization units in the horizontal direction of the graded-pitch polarization array is calculated by the following formula
Horizontal pitch S of jth column of polarization units in graded-pitch polarization array j Calculated from the following formula
Wherein P is i Is the horizontal pitch of the ith row of point light sources in the graded pitch point light source array, m is the number of point light sources in the horizontal direction of the graded pitch point light source array,a is the number of point light sources consecutively arranged in the horizontal direction corresponding to the same polarization unit I.
Preferably, the vertical pitch of the polarization units I and II is equal to the vertical pitch of the point light sources.
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; horizontal viewing angle θ of 3D image I and 3D image II 1 And a vertical viewing angle θ 2 Calculated from the following formula
Wherein p is the horizontal pitch of the point light sources located at the center of the progressive pitch point light source array, q is the vertical pitch of the point light sources, w is the width of the point light sources, n is the number of point light sources in the vertical direction of the progressive pitch point light source array, l is the viewing distance, and g is the distance between the active light emitting display screen and the transmissive display screen.
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 view of the structure and vertical parameters of the present invention
FIG. 3 is a schematic diagram of a graded pitch micro image array according to the present invention
FIG. 4 is a schematic diagram of a graded-pitch polarization array according to the present invention
The graphic reference numerals in the above figures are:
1. the display screen comprises an active luminous display screen, a graded pitch polarization array, a transmission type display screen, polarized glasses I, polarized glasses II, image elements I,7, image elements II,8, a polarization unit I and 9.
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 graded-pitch polarization array of the present invention is described in detail below, and the present invention is further specifically described. 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 graded pitch polarization array, which is shown in figures 1 and 2 and is characterized by comprising an active luminous display screen, a graded pitch polarization array, a transmission type display screen, polarized glasses I and polarized glasses II; the active light-emitting display screen, the graded pitch polarization array and the transmission type display screen are sequentially arranged in parallel and are correspondingly aligned; the graded pitch polarization array is attached to the active luminous display screen; the horizontal widths of the graded pitch polarization array and the transmission type display screen are the same; the active light-emitting display screen is used for displaying the point light source array with the gradual pitch; the horizontal pitches of the point light sources positioned in the same column of the point light source array with the gradual pitch are the same; the horizontal pitch of the point light sources in the point light source array with the gradual pitch gradually increases from the middle to the two sides; horizontal pitch P of ith row of point light sources in progressive pitch point light source array i Calculated from the following formula
Wherein ceil is an upward rounding function, floor is a downward rounding function, p is a horizontal pitch of point light sources positioned at the center of the gradually-changed-pitch point light source array, m is the number of point light sources on the horizontal direction of the gradually-changed-pitch point light source array, l is a viewing distance, and g is a 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 gradual change pitch; the graded pitch micro image array comprises an image element I and an image element II, as shown in figure 3; the horizontal pitch of the image element I is equal to the horizontal pitch of the point light source corresponding thereto; the horizontal pitch of the image element II is equal to the horizontal pitch of the point light source corresponding thereto; the polarization array with the gradual pitch is formed by alternately arranging a polarization unit I and a polarization unit II in the horizontal and vertical directions, as shown in fig. 4; the polarization direction of the polarization unit I is orthogonal to the polarization direction of the polarization unit II; a plurality of point light sources which are continuously arranged in the horizontal direction and a plurality of 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 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 illuminate the image element II through the corresponding polarization unit II to reconstruct a 3D image II; the polarization direction of the polarized glasses I is the same as that of the polarized unit I, and the polarization direction of the polarized glasses II is the same as that of the polarized 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 number of point light sources consecutively arranged in the horizontal direction corresponding to the same polarization unit I is equal to the number of point light sources consecutively arranged in the horizontal direction corresponding to the same polarization unit II.
Preferably, the number t of polarization units in the horizontal direction of the graded-pitch polarization array is calculated by the following formula
Horizontal pitch S of jth column of polarization units in graded-pitch polarization array j Calculated from the following formula
Wherein P is i Is the horizontal pitch of the ith row point light sources in the progressive pitch point light source array, and m is the progressive pitchThe number of point light sources in the horizontal direction of the point light source array, a is the number of point light sources continuously arranged in the horizontal direction corresponding to the same polarization unit I.
Preferably, the vertical pitch of the polarization units I and II is equal to the vertical pitch of the point light sources.
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; horizontal viewing angle θ of 3D image I and 3D image II 1 And a vertical viewing angle θ 2 Calculated from the following formula
Wherein p is the horizontal pitch of the point light sources located at the center of the progressive pitch point light source array, q is the vertical pitch of the point light sources, w is the width of the point light sources, n is the number of point light sources in the vertical direction of the progressive pitch point light source array, l is the viewing distance, and g is the distance between the active light emitting display screen and the transmissive display screen.
The horizontal pitch of the point light sources located at the center of the gradation pitch point light source array is p=10 mm, the number of the point light sources on the horizontal direction of the gradation pitch point light source array is m=9, the number of the point light sources on the vertical direction of the gradation pitch point light source array is n=6, the number of the point light sources continuously arranged on the horizontal direction corresponding to the same polarization unit I is a=3, the viewing distance is l=1010 mm, the distance between the active light emitting display screen and the transmission type display screen is g=10 mm, the width of the point light sources is w=2 mm, and the vertical pitch of the point light sources is q=10 mm. According to the formula (1), the horizontal pitches of the point light source arrays in the 1 st to 9 th columns in the point light source array with the gradual pitches are respectively 10.4mm, 10.3mm, 10.2mm, 10.1mm, 10mm, 10.1mm, 10.2mm, 10.3mm and 10.4mm; the number of the polarization units in the horizontal direction of the graded pitch polarization array is 3 according to the formula (2); according to the formula (3), the horizontal pitches of the 1 st to 3 rd columns of polarization units in the polarization array with the gradual change pitch are 30.9mm, 30.2mm and 30.9mm respectively; 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 62 ° according to formula (5).
Claims (5)
1. The double-vision 3D display device based on the graded pitch polarization array is characterized by comprising an active luminous display screen, a graded pitch polarization array, a transmission type display screen, polarized glasses I and polarized glasses II; the active light-emitting display screen, the graded pitch polarization array and the transmission type display screen are sequentially arranged in parallel and are correspondingly aligned; the graded pitch polarization array is attached to the active luminous display screen; the horizontal widths of the graded pitch polarization array and the transmission type display screen are the same; the active light-emitting display screen is used for displaying the point light source array with the gradual pitch; the horizontal pitches of the point light sources positioned in the same column of the point light source array with the gradual pitch are the same; the horizontal pitch of the point light sources in the point light source array with the gradual pitch gradually increases from the middle to the two sides; horizontal pitch P of ith row of point light sources in progressive pitch point light source array i Calculated from the following formula
Wherein ceil is an upward rounding function, floor is a downward rounding function, p is a horizontal pitch of point light sources positioned at the center of the gradually-changed-pitch point light source array, m is the number of point light sources on the horizontal direction of the gradually-changed-pitch point light source array, l is a viewing distance, and g is a 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 gradual change pitch; the gradual change pitch micro-image array 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 thereto; the horizontal pitch of the image element II is equal to the horizontal pitch of the point light source corresponding thereto; the graded pitch polarization array is formed by alternately arranging polarization units I and polarization units II in the horizontal and vertical directions; the polarization direction of the polarization unit I is orthogonal to the polarization direction of the polarization unit II; a plurality of point light sources which are continuously arranged in the horizontal direction and a plurality of 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 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 illuminate the image element II through the corresponding polarization unit II to reconstruct a 3D image II; the polarization direction of the polarized glasses I is the same as that of the polarized unit I, and the polarization direction of the polarized glasses II is the same as that of the polarized 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. The dual vision 3D display device based on the graded-pitch polarization array according to claim 1, wherein the number of point light sources consecutively arranged in the horizontal direction corresponding to the same polarization unit I is equal to the number of point light sources consecutively arranged in the horizontal direction corresponding to the same polarization unit II.
3. The dual vision 3D display device based on the graded-pitch polarization array according to claim 2, wherein the number t of polarization units in the horizontal direction of the graded-pitch polarization array is calculated by the following formula
Horizontal pitch S of jth column of polarization units in graded-pitch polarization array j Calculated from the following formula
Wherein P is i Is a point light source array with gradual pitchThe horizontal pitch of the I-th row point light sources in the row, m is the number of point light sources in the horizontal direction of the progressive pitch point light source array, and a is the number of point light sources continuously arranged in the horizontal direction corresponding to the same polarization unit I.
4. A dual vision 3D display device based on a graded-pitch polarization array according to claim 3, wherein the vertical pitch of the polarization unit I and the polarization unit II is equal to the vertical pitch of the point light source.
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 and the 3D image II is the same; the vertical viewing angle of the 3D image I is the same as that of the 3D image II; horizontal viewing angle θ of 3D image I and 3D image II 1 And a vertical viewing angle θ 2 Calculated from the following formula
Wherein p is the horizontal pitch of the point light sources located at the center of the progressive pitch point light source array, q is the vertical pitch of the point light sources, w is the width of the point light sources, n is the number of point light sources in the vertical direction of the progressive pitch point light source array, l is the viewing distance, and g is the distance between the active light emitting display screen and the transmissive display screen.
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