A dual-view 3D display device based on a gradient pitch rectangular pinhole array

Abstract

The invention discloses a dual-view 3D display device based on a gradient pitch rectangular pinhole array, which is characterized in that it comprises a display screen, a gradient pitch polarization grating, a gradient pitch rectangular pinhole array, polarization glasses I and polarization glasses II; the number of columns of a plurality of continuous columns of rectangular pinholes with the same horizontal pitch located at the center of the gradient pitch rectangular pinhole array is equal to twice the number of rows of a plurality of continuous rows of rectangular pinholes with the same vertical pitch located at the center of the gradient pitch rectangular pinhole array; the number of rectangular pinholes in the horizontal direction of the gradient pitch rectangular pinhole array is equal to twice the number of rectangular pinholes in the vertical direction; the horizontal pitch of the gradient pitch rectangular pinhole array gradually increases from the center to the left and right sides; and the vertical pitch of the gradient pitch rectangular pinhole array gradually increases from the center to the upper and lower sides.

Description

Technical Field

[0001] The present invention relates to 3D display, and more particularly to a dual-view 3D display device based on a gradient pitch rectangular pinhole array. Background Art

[0002] Integrated imaging dual-view 3D display is a fusion of dual-view display technology and integrated imaging 3D display technology. It allows viewers to see different 3D images in different viewing directions. The traditional integrated imaging dual-view 3D display device based on a gradient pitch pinhole array has the following disadvantages:

[0003] (1) The pitch between two adjacent pinholes changes in geometric proportion, which increases the difficulty and cost of production.

[0004] (2) The distance between two adjacent 3D pixels increases in geometric proportion, which affects the uniformity of 3D pixels and the viewing experience.

[0005] (3) The horizontal resolution is not equal to the vertical resolution, which further exacerbates the problem of poor viewing experience caused by low resolution.

[0006] (4) Narrow viewing angle. Summary of the invention

[0007] The present invention proposes a dual-view 3D display device based on a gradient pitch rectangular pinhole array, as shown in the attached Figure 1 , 2 As shown in and 3, it is characterized in that it includes a display screen, a gradient pitch polarization grating, a gradient pitch rectangular pinhole array, polarization glasses I and polarization glasses II; the display screen, the gradient pitch polarization grating and the gradient pitch rectangular pinhole array are placed in parallel and aligned accordingly; the gradient pitch polarization grating is attached to the display screen and is located between the display screen and the gradient pitch rectangular pinhole array; the horizontal pitches of the continuous columns of rectangular pinholes located at the center of the gradient pitch rectangular pinhole array are the same, and the horizontal pitch of the gradient pitch rectangular pinhole array gradually increases from the center to the left and right sides; the vertical pitches of the continuous rows of rectangular pinholes located at the center of the gradient pitch rectangular pinhole array are the same, and the vertical pitch of the gradient pitch rectangular pinhole array gradually increases from the center to the upper and lower sides; the first i Horizontal pitch of rectangular pinholes P i , No. j Vertical pitch of the rows of rectangular pinholes Q j Calculated by the following formula

[0008] (1)

[0009] (2)

[0010] in, p is the horizontal pitch of the rectangular pinhole at the center of the gradient pitch rectangular pinhole array, q is the vertical pitch of the rectangular pinhole at the center of the gradient pitch rectangular pinhole array, m is the number of rectangular pinholes in the horizontal direction in the gradient pitch rectangular pinhole array, n is the number of rectangular pinholes in the vertical direction of the gradient pitch rectangular pinhole array, a is the number of consecutive rows of rectangular pinholes with the same horizontal pitch located at the center of the gradient pitch rectangular pinhole array, b is the number of rows of consecutive rectangular pinholes with the same vertical pitch located at the center of the gradient pitch rectangular pinhole array, l is the viewing distance, g is the distance between the display screen and the gradient pitch rectangular pinhole array; Figure 4 As shown, the gradient pitch polarization grating is composed of grating I and grating II arranged alternately, the polarization direction of grating I is orthogonal to the polarization direction of grating II; the pitch of grating I is equal to the horizontal pitch of the corresponding rectangular pinhole, and the pitch of grating II is equal to the horizontal pitch of the corresponding rectangular pinhole; the polarization direction of polarization glasses I is the same as the polarization direction of grating I, and the polarization direction of polarization glasses II is the same as the polarization direction of grating II; the display screen is used to display the gradient pitch rectangular micro-image array; as shown in the attached Figure 5 As shown, the gradient pitch rectangular micro-image array is composed of rectangular image elements I and rectangular image elements II arranged alternately; the horizontal pitch and vertical pitch of rectangular image element I are respectively equal to the horizontal pitch and vertical pitch of the corresponding rectangular pinhole; the horizontal pitch and vertical pitch of rectangular image element II are respectively equal to the horizontal pitch and vertical pitch of the corresponding rectangular pinhole; rectangular image element I is aligned with grating I, and rectangular image element II is aligned with grating II; rectangular image element I reconstructs 3D image I through the corresponding grating I and rectangular pinhole, and can only be seen through polarized glasses I; rectangular image element II reconstructs 3D image II through the corresponding grating II and rectangular pinhole, and can only be seen through polarized glasses II.

[0011] Preferably, the number of consecutive columns of rectangular pinholes with the same horizontal pitch located at the center of the gradient pitch rectangular pinhole array is equal to twice the number of consecutive rows of rectangular pinholes with the same vertical pitch located at the center of the gradient pitch rectangular pinhole array.

[0012] Preferably, the horizontal widths of the display screen, the gradient pitch polarization grating and the gradient pitch rectangular pinhole array are all equal, and the vertical widths of the display screen, the gradient pitch polarization grating and the gradient pitch rectangular pinhole array are all equal.

[0013] Preferably, the number of rectangular pinholes in the gradient pitch rectangular pinhole array in the horizontal direction is equal to twice the number of rectangular pinholes in the vertical direction.

[0014] Preferably, the horizontal pitch of the rectangular pinhole located at the center of the gradient pitch rectangular pinhole array is p With vertical pitch q Satisfy the following formula

[0015] (3)

[0016] in, n is the number of rectangular pinholes in the vertical direction of the gradient pitch rectangular pinhole array, b is the number of rows of consecutive rectangular pinholes with the same vertical pitch located at the center of the gradient pitch rectangular pinhole array, c is the ratio of the vertical width to the horizontal width of the gradient pitch rectangular pinhole array, l is the viewing distance, g is the distance between the display screen and the gradient pitch rectangular pinhole array.

[0017] Preferably, the horizontal resolution and vertical resolution of 3D image I and 3D image II are respectively equal; the horizontal resolution of each 3D image is equal to the vertical resolution of each 3D image. R 1. Vertical resolution R 2 are:

[0018] (4)

[0019] (5)

[0020] in, n is the number of rectangular pinholes in the vertical direction of the gradient pitch rectangular pinhole array.

[0021] Preferably, the ratio of the vertical aperture width to the horizontal aperture width of the rectangular pinhole is equal to twice the ratio of the vertical width to the horizontal width of the gradient pitch rectangular pinhole array.

[0022] Preferably, the horizontal viewing angle and the vertical viewing angle of the 3D image I and the 3D image II are respectively equal; the horizontal viewing angle of each 3D image is equal to the vertical viewing angle of the 3D image I. θ 1. Vertical viewing angle θ 2 are:

[0023] (6)

[0024] (7)

[0025] in, P 1 is the horizontal pitch of the first row of rectangular pinholes in the gradient pitch rectangular pinhole array, Q1 is the vertical pitch of the first row of rectangular pinholes in the gradient pitch rectangular pinhole array, w is the horizontal aperture width of the rectangular pinhole, n is the number of rectangular pinholes in the vertical direction of the gradient pitch rectangular pinhole array, c is the ratio of the vertical width to the horizontal width of the gradient pitch rectangular pinhole array, l is the viewing distance, g is the distance between the display screen and the gradient pitch rectangular pinhole array. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Attached Figure 1 Schematic diagram of the structure and horizontal parameters of the present invention

[0027] Attached Figure 2 Schematic diagram of parameters in the vertical direction between the rectangular image element I and the grating I of the present invention

[0028] Attached Figure 3 Schematic diagram of parameters in the vertical direction between the rectangular image element II and the grating II of the present invention

[0029] Attached Figure 4 The schematic diagram of the structure of the gradient pitch polarization grating of the present invention is

[0030] Attached Figure 5 The schematic diagram of the structure of the gradient pitch rectangular micro-image array of the present invention is

[0031] The diagram numbers in the above drawings are:

[0032] 1. Display screen, 2. Gradient pitch polarization grating, 3. Gradient pitch rectangular pinhole array, 4. Polarization glasses I, 5. Polarization glasses II, 6. Grating I, 7. Grating II, 8. Rectangular image element I, 9. Rectangular image element II.

[0033] It should be understood that the above drawings are only schematic and are not drawn to scale. DETAILED DESCRIPTION

[0034] A typical embodiment of a dual-view 3D display device based on a gradient pitch rectangular pinhole array of the present invention is described in detail below, and the present invention is further described in detail. It is necessary to point out here that the following embodiments are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Persons skilled in the art in this field may make some non-essential improvements and adjustments to the present invention based on the above content of the present invention, which still fall within the scope of protection of the present invention.

[0035] The present invention proposes a dual-view 3D display device based on a gradient pitch rectangular pinhole array, as shown in the attached Figure 1 , 2As shown in and 3, it is characterized in that it includes a display screen, a gradient pitch polarization grating, a gradient pitch rectangular pinhole array, polarization glasses I and polarization glasses II; the display screen, the gradient pitch polarization grating and the gradient pitch rectangular pinhole array are placed in parallel and aligned accordingly; the gradient pitch polarization grating is attached to the display screen and is located between the display screen and the gradient pitch rectangular pinhole array; the horizontal pitches of the continuous columns of rectangular pinholes located at the center of the gradient pitch rectangular pinhole array are the same, and the horizontal pitch of the gradient pitch rectangular pinhole array gradually increases from the center to the left and right sides; the vertical pitches of the continuous rows of rectangular pinholes located at the center of the gradient pitch rectangular pinhole array are the same, and the vertical pitch of the gradient pitch rectangular pinhole array gradually increases from the center to the upper and lower sides; the first i Horizontal pitch of rectangular pinholes P i , No. j Vertical pitch of the rows of rectangular pinholes Q j Calculated by the following formula

[0036] (1)

[0037] (2)

[0038] in, p is the horizontal pitch of the rectangular pinhole at the center of the gradient pitch rectangular pinhole array, q is the vertical pitch of the rectangular pinhole at the center of the gradient pitch rectangular pinhole array, m is the number of rectangular pinholes in the horizontal direction in the gradient pitch rectangular pinhole array, n is the number of rectangular pinholes in the vertical direction of the gradient pitch rectangular pinhole array, a is the number of consecutive rows of rectangular pinholes with the same horizontal pitch located at the center of the gradient pitch rectangular pinhole array, b is the number of rows of consecutive rectangular pinholes with the same vertical pitch located at the center of the gradient pitch rectangular pinhole array, l is the viewing distance, g is the distance between the display screen and the gradient pitch rectangular pinhole array; Figure 4 As shown, the gradient pitch polarization grating is composed of grating I and grating II arranged alternately, the polarization direction of grating I is orthogonal to the polarization direction of grating II; the pitch of grating I is equal to the horizontal pitch of the corresponding rectangular pinhole, and the pitch of grating II is equal to the horizontal pitch of the corresponding rectangular pinhole; the polarization direction of polarization glasses I is the same as the polarization direction of grating I, and the polarization direction of polarization glasses II is the same as the polarization direction of grating II; the display screen is used to display the gradient pitch rectangular micro-image array; as shown in the attached Figure 5As shown, the gradient pitch rectangular micro-image array is composed of rectangular image elements I and rectangular image elements II arranged alternately; the horizontal pitch and vertical pitch of rectangular image element I are respectively equal to the horizontal pitch and vertical pitch of the corresponding rectangular pinhole; the horizontal pitch and vertical pitch of rectangular image element II are respectively equal to the horizontal pitch and vertical pitch of the corresponding rectangular pinhole; rectangular image element I is aligned with grating I, and rectangular image element II is aligned with grating II; rectangular image element I reconstructs 3D image I through the corresponding grating I and rectangular pinhole, and can only be seen through polarized glasses I; rectangular image element II reconstructs 3D image II through the corresponding grating II and rectangular pinhole, and can only be seen through polarized glasses II.

[0039] Preferably, the number of consecutive columns of rectangular pinholes with the same horizontal pitch located at the center of the gradient pitch rectangular pinhole array is equal to twice the number of consecutive rows of rectangular pinholes with the same vertical pitch located at the center of the gradient pitch rectangular pinhole array.

[0040] Preferably, the horizontal widths of the display screen, the gradient pitch polarization grating and the gradient pitch rectangular pinhole array are all equal, and the vertical widths of the display screen, the gradient pitch polarization grating and the gradient pitch rectangular pinhole array are all equal.

[0041] Preferably, the number of rectangular pinholes in the gradient pitch rectangular pinhole array in the horizontal direction is equal to twice the number of rectangular pinholes in the vertical direction.

[0042] Preferably, the horizontal pitch of the rectangular pinhole located at the center of the gradient pitch rectangular pinhole array is p With vertical pitch q Satisfy the following formula

[0043] (3)

[0044] in, n is the number of rectangular pinholes in the vertical direction of the gradient pitch rectangular pinhole array, b is the number of rows of consecutive rectangular pinholes with the same vertical pitch located at the center of the gradient pitch rectangular pinhole array, c is the ratio of the vertical width to the horizontal width of the gradient pitch rectangular pinhole array, l is the viewing distance, g is the distance between the display screen and the gradient pitch rectangular pinhole array.

[0045] Preferably, the horizontal resolution and vertical resolution of 3D image I and 3D image II are respectively equal; the horizontal resolution of each 3D image is equal to the vertical resolution of each 3D image. R 1. Vertical resolution R 2 are:

[0046] (4)

[0047] (5)

[0048] in, n is the number of rectangular pinholes in the vertical direction of the gradient pitch rectangular pinhole array.

[0049] Preferably, the ratio of the vertical aperture width to the horizontal aperture width of the rectangular pinhole is equal to twice the ratio of the vertical width to the horizontal width of the gradient pitch rectangular pinhole array.

[0050] Preferably, the horizontal viewing angle and the vertical viewing angle of the 3D image I and the 3D image II are respectively equal; the horizontal viewing angle of each 3D image is equal to the vertical viewing angle of the 3D image I. θ 1. Vertical viewing angle θ 2 are:

[0051] (6)

[0052] (7)

[0053] in, P 1 is the horizontal pitch of the first row of rectangular pinholes in the gradient pitch rectangular pinhole array, Q 1 is the vertical pitch of the first row of rectangular pinholes in the gradient pitch rectangular pinhole array, w is the horizontal aperture width of the rectangular pinhole, n is the number of rectangular pinholes in the vertical direction of the gradient pitch rectangular pinhole array, c is the ratio of the vertical width to the horizontal width of the gradient pitch rectangular pinhole array, l is the viewing distance, g is the distance between the display screen and the gradient pitch rectangular pinhole array.

[0054] The horizontal pitch of the rectangular pinhole located at the center of the gradient pitch rectangular pinhole array is p =10mm, the number of rectangular pinholes in the horizontal direction in the gradient pitch rectangular pinhole array is m =60, the number of rectangular pinholes in the vertical direction of the gradient pitch rectangular pinhole array is n =30, the number of consecutive rows of rectangular pinholes with the same horizontal pitch located in the center of the gradient pitch rectangular pinhole array is a = 20, the number of rows of continuous rectangular pinholes with the same vertical pitch located in the center of the gradient pitch rectangular pinhole array is b =10, viewing distance is l =5010mm, the distance between the display screen and the gradient pitch rectangular pinhole array is g =10mm, the ratio of the vertical width to the horizontal width of the gradient pitch rectangular pinhole array is c=0.58, the horizontal aperture width of the rectangular pinhole is w =1.9mm, the vertical aperture width of the rectangular pinhole is v =2.2mm. According to formula (1), the horizontal pitches of the 1st to 60th columns of the rectangular pinhole array in the gradient pitch rectangular pinhole array are 10.8mm, ... mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10mm, 10m m, 10mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm, 1 0.8mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm, 10.8mm; According to equations (2) and (3), the vertical pitches of the 1st to 30th rows of the rectangular pinhole array in the gradient pitch rectangular pinhole array are 12.5mm, ... m, 12mm, 12mm, 12mm, 12mm, 12mm, 12mm, 12mm, 12.5mm, 12.5mm, 12.5mm, 12.5mm, 12.5mm, 12.5mm, 12.5mm, 12.5mm, 12.5mm; according to formulas (4), (5), (6) and (7), the horizontal resolution, vertical resolution, horizontal viewing angle and vertical viewing angle of 3D image I and 3D image II are 30, 30, 60° and 52° respectively.

Claims

1. A dual-view 3D display device based on a gradient pitch rectangular pinhole array, characterized in that: It includes a display screen, a gradient pitch polarization grating, a gradient pitch rectangular pinhole array, polarization glasses I and polarization glasses II; The horizontal widths of the display screen, the gradient pitch polarization grating and the gradient pitch rectangular pinhole array are all equal, and the vertical widths of the display screen, the gradient pitch polarization grating and the gradient pitch rectangular pinhole array are all equal; The display screen, the gradient pitch polarization grating and the gradient pitch rectangular pinhole array are placed in parallel and aligned accordingly; The gradient pitch polarization grating is attached to the display screen and is located between the display screen and the gradient pitch rectangular pinhole array; The horizontal pitches of the continuous multiple columns of rectangular pinholes located at the center of the gradient pitch rectangular pinhole array are the same, and the horizontal pitch of the gradient pitch rectangular pinhole array gradually increases from the center to the left and right sides; the vertical pitches of the continuous multiple rows of rectangular pinholes located at the center of the gradient pitch rectangular pinhole array are the same, and the vertical pitch of the gradient pitch rectangular pinhole array gradually increases from the center to the top and bottom sides; the number of the continuous multiple columns of rectangular pinholes with the same horizontal pitch located at the center of the gradient pitch rectangular pinhole array is equal to twice the number of the continuous multiple rows of rectangular pinholes with the same vertical pitch located at the center of the gradient pitch rectangular pinhole array; the number of rectangular pinholes in the horizontal direction of the gradient pitch rectangular pinhole array is equal to twice the number of rectangular pinholes in the vertical direction; the horizontal pitch P of the i-th column of rectangular pinholes in the gradient pitch rectangular pinhole array is equal to twice the number of rectangular pinholes in the vertical direction. i , the vertical pitch Q of the j-th row of rectangular pinholes j Calculated by the following formula Wherein, p is the horizontal pitch of the rectangular pinhole located at the center of the gradient pitch rectangular pinhole array, q is the vertical pitch of the rectangular pinhole located at the center of the gradient pitch rectangular pinhole array, m is the number of rectangular pinholes in the horizontal direction of the gradient pitch rectangular pinhole array, n is the number of rectangular pinholes in the vertical direction of the gradient pitch rectangular pinhole array, a is the number of consecutive columns of rectangular pinholes with the same horizontal pitch located at the center of the gradient pitch rectangular pinhole array, b is the number of consecutive rows of rectangular pinholes with the same vertical pitch located at the center of the gradient pitch rectangular pinhole array, l is the viewing distance, g is the distance between the display screen and the gradient pitch rectangular pinhole array; the horizontal pitch and vertical pitch of the rectangular pinhole located at the center of the gradient pitch rectangular pinhole array satisfy the following formula Wherein, c is the ratio of the vertical width to the horizontal width of the gradient pitch rectangular pinhole array; the gradient pitch polarization grating is composed of grating I and grating II arranged alternately, and the polarization direction of grating I is orthogonal to the polarization direction of grating II; the pitch of grating I is equal to the horizontal pitch of the corresponding rectangular pinhole, and the pitch of grating II is equal to the horizontal pitch of the corresponding rectangular pinhole; the polarization direction of polarization glasses I is the same as that of grating I, and the polarization direction of polarization glasses II is the same as that of grating II; the display screen is used to display the gradient pitch rectangular micro-image array; the gradient pitch rectangular micro-image array is composed of rectangular image element I and rectangular image element II arranged alternately; the horizontal pitch and vertical pitch of rectangular image element I are equal to The horizontal pitch and vertical pitch of the rectangular pinhole corresponding to it are equal to the horizontal pitch and vertical pitch of the rectangular pinhole corresponding to it; the horizontal pitch and vertical pitch of the rectangular image element II are respectively equal to the horizontal pitch and vertical pitch of the rectangular pinhole corresponding to it; the rectangular image element I is aligned with the grating I, and the rectangular image element II is aligned with the grating II; the rectangular image element I reconstructs the 3D image I through the corresponding grating I and the rectangular pinhole, and can only be seen through the polarization glasses I; the rectangular image element II reconstructs the 3D image II through the corresponding grating II and the rectangular pinhole, and can only be seen through the polarization glasses II; the horizontal resolution and vertical resolution of the 3D image I are equal to that of the 3D image II; the horizontal resolution R1 and the vertical resolution R2 of each 3D image are respectively: R1=n R2=n.

2. A dual-view 3D display device based on a gradient pitch rectangular pinhole array according to claim 1, characterized in that: The ratio of the vertical aperture width to the horizontal aperture width of the rectangular pinhole is equal to twice the ratio of the vertical width to the horizontal width of the gradient pitch rectangular pinhole array.

3. The dual-view 3D display device based on a gradient pitch rectangular pinhole array according to claim 2, characterized in that: The horizontal viewing angle and the vertical viewing angle of the 3D image I and the 3D image II are respectively equal; the horizontal viewing angle θ1 and the vertical viewing angle θ2 of each 3D image are respectively: Among them, P1 is the horizontal pitch of the rectangular pinholes in the first column of the gradient pitch rectangular pinhole array, Q1 is the vertical pitch of the rectangular pinholes in the first row of the gradient pitch rectangular pinhole array, w is the horizontal aperture width of the rectangular pinholes, n is the number of rectangular pinholes in the vertical direction of the gradient pitch rectangular pinhole array, c is the ratio of the vertical width to the horizontal width of the gradient pitch rectangular pinhole array, l is the viewing distance, and g is the spacing between the display screen and the gradient pitch rectangular pinhole array.

Images