CN117826439A - Double-view 3D display method based on polarization array - Google Patents
Double-view 3D display method based on polarization array Download PDFInfo
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- 230000010287 polarization Effects 0.000 title claims abstract description 107
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- 239000011295 pitch Substances 0.000 claims abstract description 18
- 238000003384 imaging method Methods 0.000 claims description 19
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- 208000029444 double vision Diseases 0.000 abstract description 2
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Abstract
The invention provides a double-vision 3D display method based on a polarization array, wherein a polarization unit I and a polarization unit II are square; the pitches of the polarization unit I and the polarization unit II are the same; the image element I and the image element II are square; the width of picture element I is equal to the width of picture element II; a single polarization unit I corresponds to four image elements I; a single polarization unit II corresponds to four image elements II; the image element I reconstructs a 3D image I through a polarizing unit I and a pinhole corresponding to the image element I, and the image element II reconstructs a 3D image II through a polarizing unit II and a pinhole corresponding to the image element 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 a polarization array based dual vision 3D display method.
Background
Integrated imaging dual vision 3D display is a new display technology that has emerged in recent years. It can provide two different 3D pictures at the same time. The integrated imaging double-vision 3D display based on the pinhole array has the advantages of large depth of field, no pitch limitation by a manufacturing process, low price and the like. The pinhole array consists of a light-transmitting pinhole and a shading area. Thus, there is occlusion in integrated imaging dual vision 3D displays based on pinhole arrays. Imaging efficiency is a parameter that measures the impact of occlusion on viewing effects.
The prior Chinese patent 2021110651634 adopts a double-polarization slit grating to increase the imaging efficiency of the integrated imaging 3D display. However, in the above technical solution, the same image element is imaged by two slit gratings with orthogonal polarization directions at the same time, so the technical solution cannot be applied to integrated imaging dual-view 3D display.
Disclosure of Invention
The invention provides a double-view 3D display method based on a polarization array, which realizes double-view 3D display through integrated imaging display equipment; the integrated imaging display device is characterized by comprising a display screen, a polarization array, a pinhole array, polarized glasses I and polarized glasses II; the display screen, the polarization array and the pinhole array are sequentially arranged in parallel, as shown in figures 1 and 2; the polarization array is attached to the display screen; the 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 figure 3; the polarization direction of the polarization unit I is orthogonal to the polarization direction of the polarization unit II; the polarization unit I and the polarization unit II are square; the pitches of the polarization unit I and the polarization unit II are the same; the display screen is used for displaying an image element I and an image element II, as shown in figure 4; image element I is acquired from 3D scene I, and image element II is acquired from 3D scene II; the image element I and the image element II are square; the width of picture element I is equal to the width of picture element II; the single polarization unit I corresponds to four image elements I, wherein two image elements I are corresponding to each other in the horizontal direction and two image elements I are corresponding to each other in the vertical direction; the single polarization unit II corresponds to four image elements II, wherein two image elements II are corresponding to each other in the horizontal direction and two image elements II are corresponding to each other in the vertical direction; the horizontal interval width of the horizontal adjacent image element I, the vertical interval width of the vertical adjacent image element I, the horizontal interval width of the horizontal adjacent image element II and the vertical interval width of the vertical adjacent image element II are the same; the horizontal interval width between the horizontally adjacent image elements I and the horizontally adjacent image elements II is equal to 0; the vertical interval width between the vertically adjacent picture elements I and the picture elements II is equal to 0; the pitch p of the polarization unit I is calculated from
p＝2a+b (1)
Where a is the width of the picture element I and b is the horizontal spacing width of the horizontally adjacent picture element I; the center of the pinhole is aligned with the center of the image element in a one-to-one correspondence; the image element I reconstructs a 3D image I through a polarizing unit I and a pinhole corresponding to the image element I, and the image element II reconstructs a 3D image II through a polarizing unit II and a pinhole corresponding to the image element 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 imaging efficiency η is calculated from the formula
Where p is the pitch of the polarizing elements I and w is the aperture width of the pinhole.
Preferably, the width a of the picture element I and the horizontal interval width b of the horizontally adjacent picture element I are respectively:
a＝3w (3)
b＝2w (4)
where w is the aperture width of the pinhole.
Preferably, the horizontal widths of the display screen, the polarization array and the pinhole array are the same; the vertical widths of the polarization array and the pinhole array are the same.
Preferably, the number of polarizing units I in the horizontal direction is equal to the number of polarizing units II in the horizontal direction; the number of polarizing units I in the vertical direction is equal to the number of polarizing units II in the vertical direction; the horizontal width x and the vertical width y of the display screen are calculated by the following formula
x＝2mp (5)
y＝2np (6)
Where p is the pitch of the polarization units I, m is the number of polarization units I in the horizontal direction, and n is the number of polarization units I in the vertical direction.
Preferably, the 3D image I has a horizontal viewing angle θ 1 Horizontal viewing angle θ of 3D image II 2 Vertical viewing angle θ of 3D image I 3 Vertical viewing angle θ of 3D image II 4 The method comprises the following steps:
where p is the pitch of the polarizing units I, a is the width of the picture elements I, b is the horizontal spacing width of the horizontally adjacent picture elements I, w is the aperture width of the pinholes, m is the number of polarizing units I in the horizontal direction, n is the number of polarizing units I in the vertical direction, l is the viewing distance, g is the spacing of the display screen from the pinhole array.
The beneficial effects are that: the invention provides a double-view 3D display method based on a polarization array, which on one hand ensures that the 3D image I and the 3D image II have no row or column pixel missing problem, on the other hand increases imaging efficiency, reduces the sizes of the polarization array, a display screen and a pinhole array, and reduces the cost of display equipment.
Drawings
FIG. 1 is a schematic view of the structure and horizontal parameters 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 polarization array according to the present invention
FIG. 4 is a schematic diagram showing the distribution of picture element 1 and picture element II according to the present invention
The graphic reference numerals in the above figures are:
1. the display screen, 2, polarization array, 3, pinhole array, 4, polarization glasses I,5, polarization glasses II,6, polarization unit I,7, polarization unit II,8, picture element I,9, picture element II,10, horizontal interval of horizontally adjacent picture element I, 11, horizontal interval of horizontally adjacent picture element II, 12, horizontal interval of vertically adjacent picture element I, 13, horizontal interval of vertically adjacent picture element II, 14.3D image I,15.3D image 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 the polarization array-based dual-view 3D display method of the present invention will be described in detail, 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-view 3D display method based on a polarization array, which realizes double-view 3D display through integrated imaging display equipment; the integrated imaging display device is characterized by comprising a display screen, a polarization array, a pinhole array, polarized glasses I and polarized glasses II; the display screen, the polarization array and the pinhole array are sequentially arranged in parallel, as shown in figures 1 and 2; the polarization array is attached to the display screen; the 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 figure 3; the polarization direction of the polarization unit I is orthogonal to the polarization direction of the polarization unit II; the polarization unit I and the polarization unit II are square; the pitches of the polarization unit I and the polarization unit II are the same; the display screen is used for displaying an image element I and an image element II, as shown in figure 4; image element I is acquired from 3D scene I, and image element II is acquired from 3D scene II; the image element I and the image element II are square; the width of picture element I is equal to the width of picture element II; the single polarization unit I corresponds to four image elements I, wherein two image elements I are corresponding to each other in the horizontal direction and two image elements I are corresponding to each other in the vertical direction; the single polarization unit II corresponds to four image elements II, wherein two image elements II are corresponding to each other in the horizontal direction and two image elements II are corresponding to each other in the vertical direction; the horizontal interval width of the horizontal adjacent image element I, the vertical interval width of the vertical adjacent image element I, the horizontal interval width of the horizontal adjacent image element II and the vertical interval width of the vertical adjacent image element II are the same; the horizontal interval width between the horizontally adjacent image elements I and the horizontally adjacent image elements II is equal to 0; the vertical interval width between the vertically adjacent picture elements I and the picture elements II is equal to 0; the pitch p of the polarization unit I is calculated from
p＝2a+b (1)
Where a is the width of the picture element I and b is the horizontal spacing width of the horizontally adjacent picture element I; the center of the pinhole is aligned with the center of the image element in a one-to-one correspondence; the image element I reconstructs a 3D image I through a polarizing unit I and a pinhole corresponding to the image element I, and the image element II reconstructs a 3D image II through a polarizing unit II and a pinhole corresponding to the image element 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 imaging efficiency η is calculated from the formula
Where p is the pitch of the polarizing elements I and w is the aperture width of the pinhole.
Preferably, the width a of the picture element I and the horizontal interval width b of the horizontally adjacent picture element I are respectively:
a＝3w (3)
b＝2w (4)
where w is the aperture width of the pinhole.
Preferably, the horizontal widths of the display screen, the polarization array and the pinhole array are the same; the vertical widths of the polarization array and the pinhole array are the same.
Preferably, the number of polarizing units I in the horizontal direction is equal to the number of polarizing units II in the horizontal direction; the number of polarizing units I in the vertical direction is equal to the number of polarizing units II in the vertical direction; the horizontal width x and the vertical width y of the display screen are calculated by the following formula
x＝2mp (5)
y＝2np (6)
Where p is the pitch of the polarization units I, m is the number of polarization units I in the horizontal direction, and n is the number of polarization units I in the vertical direction.
Preferably, the 3D image I has a horizontal viewing angle θ 1 Horizontal viewing angle θ of 3D image II 2 Vertical viewing angle θ of 3D image I 3 Vertical viewing angle θ of 3D image II 4 The method comprises the following steps:
where p is the pitch of the polarizing units I, a is the width of the picture elements I, b is the horizontal spacing width of the horizontally adjacent picture elements I, w is the aperture width of the pinholes, m is the number of polarizing units I in the horizontal direction, n is the number of polarizing units I in the vertical direction, l is the viewing distance, g is the spacing of the display screen from the pinhole array.
The width of the image element I is 3mm, the horizontal interval width of the horizontally adjacent image elements I is 2mm, the aperture width of the pinholes is 1mm, the distance between the display screen and the pinhole array is 5mm, the number of the polarizing units I in the horizontal direction is 4, the number of the polarizing units I in the vertical direction is 4, and the viewing distance is 500mm, and the pitch of the polarizing units is 8mm calculated by the formula (1); the imaging efficiency calculated from formula (2) was 6.25%; calculating from the formula (5) and the formula (6) to obtain the horizontal width and the vertical width of the display screen as 64mm and 64mm respectively; calculating from the formulas (7) and (8) to obtain a horizontal viewing angle of the 3D image I, a horizontal viewing angle of the 3D image II, a vertical viewing angle of the 3D image I and a vertical viewing angle of the 3D image II, wherein the angles of view are 41 degrees and 41 degrees respectively; in the prior art scheme based on the above parameters, the imaging efficiency is 4%, and the horizontal width and the vertical width of the display screen are 80mm and 80mm, respectively.
Claims (5)
1. The method realizes double-view 3D display through integrated imaging display equipment; the integrated imaging display device is characterized by comprising a display screen, a polarization array, a pinhole array, polarized glasses I and polarized glasses II; the display screen, the polarization array, the pinhole array is placed in parallel sequentially; the polarization array is attached to the display screen; the polarization array is formed by alternately arranging a polarization unit I and a polarization unit II in the horizontal direction and the vertical direction; the polarization direction of the polarization unit I is orthogonal to the polarization direction of the polarization unit II; the polarization unit I and the polarization unit II are square; the pitches of the polarization unit I and the polarization unit II are the same; the display screen is used for displaying the image element I and the image element II; image element I is acquired from 3D scene I, and image element II is acquired from 3D scene II; the image element I and the image element II are square; the width of picture element I is equal to the width of picture element II; the single polarization unit I corresponds to four image elements I, wherein two image elements I are corresponding to each other in the horizontal direction and two image elements I are corresponding to each other in the vertical direction; the single polarization unit II corresponds to four image elements II, wherein two image elements II are corresponding to each other in the horizontal direction and two image elements II are corresponding to each other in the vertical direction; the horizontal interval width of the horizontal adjacent image element I, the vertical interval width of the vertical adjacent image element I, the horizontal interval width of the horizontal adjacent image element II and the vertical interval width of the vertical adjacent image element II are the same; the horizontal interval width between the horizontally adjacent image elements I and the horizontally adjacent image elements II is equal to 0; the vertical interval width between the vertically adjacent picture elements I and the picture elements II is equal to 0; the pitch p of the polarization unit I is calculated from
p＝2a+b(1)
Where a is the width of the picture element I and b is the horizontal spacing width of the horizontally adjacent picture element I; the center of the pinhole is aligned with the center of the image element in a one-to-one correspondence; the image element I reconstructs a 3D image I through a polarizing unit I and a pinhole corresponding to the image element I, and the image element II reconstructs a 3D image II through a polarizing unit II and a pinhole corresponding to the image element 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 polarization array-based dual-view 3D display method of claim 1, wherein the imaging efficiency η is calculated by the following formula
Where p is the pitch of the polarizing elements I and w is the aperture width of the pinhole.
3. The polarization array-based dual-view 3D display method according to claim 1, wherein the width a of the picture element I and the horizontal interval width b of the horizontally adjacent picture element I are respectively:
a＝3w(3)
b＝2w(4)
where w is the aperture width of the pinhole.
4. The polarization array-based dual view 3D display method of claim 1, wherein the number of polarization units I in the horizontal direction is equal to the number of polarization units II in the horizontal direction; the number of polarizing units I in the vertical direction is equal to the number of polarizing units II in the vertical direction; the horizontal width x and the vertical width y of the display screen are calculated by the following formula
x＝2mp(5)
y＝2np(6)
Where p is the pitch of the polarization units I, m is the number of polarization units I in the horizontal direction, and n is the number of polarization units I in the vertical direction.
5. The polarization-array-based dual-view 3D display method of claim 4, wherein the horizontal viewing angle θ of the 3D image I 1 Horizontal viewing angle θ of 3D image II 2 Vertical viewing angle θ of 3D image I 3 Vertical viewing angle θ of 3D image II 4 The method comprises the following steps:
where p is the pitch of the polarizing units I, a is the width of the picture elements I, b is the horizontal spacing width of the horizontally adjacent picture elements I, w is the aperture width of the pinholes, m is the number of polarizing units I in the horizontal direction, n is the number of polarizing units I in the vertical direction, l is the viewing distance, g is the spacing of the display screen from the pinhole array.
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