CN108776388B - Double-view 3D display device and method based on gradient slit grating - Google Patents
Double-view 3D display device and method based on gradient slit grating Download PDFInfo
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- 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
- G02B30/27—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 lenticular arrays
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- 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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Abstract
The invention discloses a double-vision 3D display device and a method based on a gradual change slit grating, wherein a 1 st polarization unit and a 2 nd polarization unit are alternately arranged in the horizontal and vertical directions, a 1 st image element and a 2 nd image element are respectively corresponding to and aligned with the 1 st polarization unit and the 2 nd polarization unit, and on the premise of not increasing the resolution of a 3D image, the resolution of the 3D image is more uniform, and the display effect is improved; switching different 3D images by wearing different polarized glasses without moving the viewing position; the aperture width of the gradual change slit grating is gradually increased from the middle to the two sides, so that the brightness is increased; the thickness of the gradual change slit grating is gradually increased from the middle to the two sides, so that the light rays emitted by any two 1 st image elements are not interfered with each other, and the light rays emitted by any two 2 nd image elements are not interfered with each other, thereby eliminating crosstalk.
Description
Technical Field
The present invention relates to a dual-view 3D display, and more particularly, to a dual-view 3D display device and method based on a gradation slit grating.
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, there are four distinct disadvantages to existing integrated imaging dual vision 3D displays: 1. the two 3D visual areas are separated, and a viewer needs to move the viewing position to see another 3D picture; 2. the resolution is not uniform; 3. there is crosstalk; 4. the brightness is low.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a double-vision 3D display device and a method based on a gradient slit grating, and the display device based on the display method can simultaneously provide two different crosstalk-free 3D images with uniform resolution in the same visual area.
In order to achieve the above object, the present invention provides the following technical solutions:
the double-vision 3D display device based on the gradual change slit grating is shown in figure 1, and is characterized by comprising a display screen, a polarization array, the gradual change slit grating, a 1 st polarized glasses and a 2 nd polarized glasses; the display screen is characterized in that the centers of the polarization array and the gradient slit grating are corresponding and aligned, the thickness of any row of slits in the gradient slit grating is the same, the aperture width of any row of slits is the same, and the thickness and the aperture width of the slits are gradually increased from the middle to the two sides; the polarization array is formed by alternately arranging a 1 st polarization unit and a 2 nd polarization unit in the horizontal direction and the vertical direction, the 1 st polarization unit is orthogonal to the polarization direction of the 2 nd polarization unit, and the polarization directions of the adjacent polarization units in the horizontal direction and the vertical direction of the polarization array are orthogonal, as shown in figure 2; the polarization directions of the 1 st polarized glasses and the 1 st polarized unit are the same, and the polarization directions of the 2 nd polarized glasses and the 2 nd polarized unit are the same;
the display screen is used for displaying a micro-image array, and the micro-image array is formed by alternately arranging the 1 st image element and the 2 nd image element in the horizontal and vertical directions, as shown in figure 3; the 1 st image element is acquired through a 1 st three-dimensional scene, and the 2 nd image element is acquired through a 2 nd three-dimensional scene; the 1 st image element and the 2 nd image element respectively correspond to and are aligned with the 1 st polarization unit and the 2 nd polarization unit;
in the micro image array, the light rays emitted from the leftmost side and the rightmost side of the 1 st image element positioned in the odd columns cannot pass through the slits corresponding to the 1 st image elements positioned in other odd columns;
in the micro-image array, the light rays emitted from the leftmost side and the rightmost side of the 1 st image element positioned in the even number columns cannot pass through the slits corresponding to the 1 st image elements positioned in other even number columns;
in the micro-image array, the light rays emitted from the leftmost side and the rightmost side of the 2 nd image elements positioned in the odd columns cannot pass through the slits corresponding to the 2 nd image elements positioned in other odd columns;
in the micro image array, the light rays emitted from the leftmost and rightmost image elements of the 2 nd image element in the even number columns cannot pass through the slits corresponding to the 2 nd image elements in the other even number columns.
Preferably, the pitch of the 1 st image element, the pitch of the 2 nd image element, the pitch of the 1 st polarization unit, the pitch of the 2 nd polarization unit and the pitch of the slit are p, the gradient slit grating comprises m units, the distance between the display screen and the gradient slit grating is g, and the ith row of slits are positioned on the gradient slit gratingIs w is the aperture width of i Thickness t of the ith row of slits on the gradient slit grating i Calculated from the following formula:
wherein i is a positive integer less than or equal to m.
Preferably, the pitch of the 1 st image element, the pitch of the 2 nd image element, the pitch of the 1 st polarization unit, the pitch of the 2 nd polarization unit and the pitch of the slit are p, the gradient slit grating comprises m units, and the aperture width of the ith row of slits on the gradient slit grating is w i If the brightness of the display screen is b, the brightness a of the 1 st three-dimensional image and the 2 nd three-dimensional image is calculated as follows:
wherein i is a positive integer less than or equal to m.
Preferably, the polarization array is closely attached to the graded slit grating.
A double-view 3D display method based on a gradient slit grating comprises the following steps:
the 1 st polarization unit and the 2 nd polarization unit which are orthogonal in polarization direction are alternately arranged in the horizontal direction and the vertical direction, the polarization directions of the adjacent polarization units in the horizontal direction and the vertical direction are orthogonal,
the 1 st image element and the 2 nd image element acquired through the 1 st three-dimensional scene and the 2 nd three-dimensional scene correspond to and are aligned with the 1 st polarization unit and the 2 nd polarization unit respectively;
the 1 st polarization unit modulates the light rays emitted by the 1 st image element into polarized light, and the polarized light reconstructs a 1 st three-dimensional image through the slit corresponding to the 1 st image element and can only be seen through the 1 st polarized glasses;
the 2 nd polarization unit modulates the light rays emitted by the 2 nd image element into polarized light, and the polarized light reconstructs a 2 nd three-dimensional image through the slit corresponding to the 2 nd image element and can only be seen through the 2 nd polarization glasses;
in the gradual change slit grating, the thickness of any row of slits is the same, the aperture width of any row of slits is the same, and the thickness and the aperture width of the slits gradually increase from the middle to the two sides;
in the micro image array, the light rays emitted from the leftmost side and the rightmost side of the 1 st image element positioned in the odd columns cannot pass through the slits corresponding to the 1 st image elements positioned in other odd columns;
in the micro-image array, the light rays emitted from the leftmost side and the rightmost side of the 1 st image element positioned in the even number columns cannot pass through the slits corresponding to the 1 st image elements positioned in other even number columns;
in the micro-image array, the light rays emitted from the leftmost side and the rightmost side of the 2 nd image elements positioned in the odd columns cannot pass through the slits corresponding to the 2 nd image elements positioned in other odd columns;
in the micro image array, the light rays emitted from the leftmost and rightmost image elements of the 2 nd image element in the even number columns cannot pass through the slits corresponding to the 2 nd image elements in the other even number columns.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the 1 st polarization unit and the 2 nd polarization unit are alternately arranged in the horizontal direction and the vertical direction, and the 1 st image element and the 2 nd image element are respectively corresponding to and aligned with the 1 st polarization unit and the 2 nd polarization unit, so that the resolution of a 3D image is more uniform on the premise of not increasing the resolution of the 3D image, and the display effect is improved; 2. further, the viewing position does not need to be moved, and different 3D images are switched by wearing different polarized glasses;
3. further, the aperture width of the gradual change slit grating is gradually increased from the middle to the two sides, so that the brightness is increased; 4. further, the thickness of the gradual change slit grating is gradually increased from the middle to the two sides, so that the light rays emitted by any two 1 st image elements are not interfered with each other, and the light rays emitted by any two 2 nd image elements are not interfered with each other, thereby eliminating crosstalk.
Drawings
FIG. 1 is a block diagram of a dual view 3D display of the present invention
FIG. 2 is a schematic diagram of an arrangement of a polarizing array according to the present invention
FIG. 3 is a schematic diagram showing the arrangement of a microimage array according to the present invention
The graphic reference numerals in the above figures are:
the three-dimensional display comprises a display screen 1, a polarization array 2, a gradient slit grating 3, a pair of polarized glasses 4, a pair of polarized glasses 5, a pair of polarized glasses 6, a pair of polarized units 1, a pair of polarized units 7, a pair of microimage arrays 8, a pair of picture elements 9, a pair of picture elements 10, a pair of picture elements 2, a pair of three-dimensional images 11, and a pair of three-dimensional images 12.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description of an exemplary embodiment of the invention. It 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 double-vision 3D display device based on the gradual change slit grating is shown in figure 1, and is characterized by comprising a display screen, a polarization array, the gradual change slit grating, a 1 st polarized glasses and a 2 nd polarized glasses; the display screen is characterized in that the centers of the polarization array and the gradient slit grating are corresponding and aligned, the thickness of any row of slits in the gradient slit grating is the same, the aperture width of any row of slits is the same, and the thickness and the aperture width of the slits are gradually increased from the middle to the two sides; the polarization array is formed by alternately arranging a 1 st polarization unit and a 2 nd polarization unit in the horizontal direction and the vertical direction, the 1 st polarization unit is orthogonal to the polarization direction of the 2 nd polarization unit, and the polarization directions of the adjacent polarization units in the horizontal direction and the vertical direction of the polarization array are orthogonal, as shown in figure 2; the polarization directions of the 1 st polarized glasses and the 1 st polarized unit are the same, and the polarization directions of the 2 nd polarized glasses and the 2 nd polarized unit are the same;
the display screen is used for displaying a micro-image array, and the micro-image array is formed by alternately arranging the 1 st image element and the 2 nd image element in the horizontal and vertical directions, as shown in figure 3; the 1 st image element is acquired through a 1 st three-dimensional scene, and the 2 nd image element is acquired through a 2 nd three-dimensional scene; the 1 st image element and the 2 nd image element respectively correspond to and are aligned with the 1 st polarization unit and the 2 nd polarization unit;
in the micro image array, the light rays emitted from the leftmost side and the rightmost side of the 1 st image element positioned in the odd columns cannot pass through the slits corresponding to the 1 st image elements positioned in other odd columns;
in the micro-image array, the light rays emitted from the leftmost side and the rightmost side of the 1 st image element positioned in the even number columns cannot pass through the slits corresponding to the 1 st image elements positioned in other even number columns;
in the micro-image array, the light rays emitted from the leftmost side and the rightmost side of the 2 nd image elements positioned in the odd columns cannot pass through the slits corresponding to the 2 nd image elements positioned in other odd columns;
in the micro image array, the light rays emitted from the leftmost and rightmost image elements of the 2 nd image element in the even number columns cannot pass through the slits corresponding to the 2 nd image elements in the other even number columns.
Preferably, the pitch of the 1 st image element, the pitch of the 2 nd image element, the pitch of the 1 st polarization unit, the pitch of the 2 nd polarization unit and the pitch of the slit are p, the gradient slit grating comprises m units, the distance between the display screen and the gradient slit grating is g, and the aperture width of the ith row of slits on the gradient slit grating is w i Thickness t of the ith row of slits on the gradient slit grating i Calculated from the following formula:
wherein i is a positive integer less than or equal to m.
Preferably, the pitch of the 1 st image element, the pitch of the 2 nd image element, the pitch of the 1 st polarization unit, the pitch of the 2 nd polarization unit and the pitch of the slit are p, and the graded slit grating comprises mThe unit is positioned on the gradient slit grating, and the aperture width of the ith row of slits is w i The optical efficiency a of the dual-view 3D display device is calculated as follows:
wherein i is a positive integer less than or equal to m.
Preferably, the polarization array is closely attached to the graded slit grating.
A double-view 3D display method based on a gradient slit grating comprises the following steps:
the 1 st polarization unit and the 2 nd polarization unit which are orthogonal in polarization direction are alternately arranged in the horizontal direction and the vertical direction, the polarization directions of the adjacent polarization units in the horizontal direction and the vertical direction are orthogonal,
the 1 st image element and the 2 nd image element acquired through the 1 st three-dimensional scene and the 2 nd three-dimensional scene correspond to and are aligned with the 1 st polarization unit and the 2 nd polarization unit respectively;
the 1 st polarization unit modulates the light rays emitted by the 1 st image element into polarized light, and the polarized light reconstructs a 1 st three-dimensional image through the slit corresponding to the 1 st image element and can only be seen through the 1 st polarized glasses;
the 2 nd polarization unit modulates the light rays emitted by the 2 nd image element into polarized light, and the polarized light reconstructs a 2 nd three-dimensional image through the slit corresponding to the 2 nd image element and can only be seen through the 2 nd polarization glasses;
in the gradual change slit grating, the thickness of any row of slits is the same, the aperture width of any row of slits is the same, and the thickness and the aperture width of the slits gradually increase from the middle to the two sides;
in the micro image array, the light rays emitted from the leftmost side and the rightmost side of the 1 st image element positioned in the odd columns cannot pass through the slits corresponding to the 1 st image elements positioned in other odd columns;
in the micro-image array, the light rays emitted from the leftmost side and the rightmost side of the 1 st image element positioned in the even number columns cannot pass through the slits corresponding to the 1 st image elements positioned in other even number columns;
in the micro-image array, the light rays emitted from the leftmost side and the rightmost side of the 2 nd image elements positioned in the odd columns cannot pass through the slits corresponding to the 2 nd image elements positioned in other odd columns;
in the micro image array, the light rays emitted from the leftmost and rightmost image elements of the 2 nd image element in the even number columns cannot pass through the slits corresponding to the 2 nd image elements in the other even number columns.
The micro image array and the polarization array both comprise 10×10 units, wherein 10 units in the horizontal direction and 10 units in the vertical direction, the gradient slit grating comprises 10 units, the pitch of the 1 st image element, the pitch of the 2 nd image element, the pitch of the 1 st polarization element, the pitch of the 2 nd polarization element and the pitch of the slit are p=4 mm, the distance between the display screen and the gradient slit grating is g=4 mm, the aperture widths of the 1 st to 10 th row pinholes in the gradient slit grating are respectively 0.8mm, 0.7mm, 0.6mm, 0.5mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm and 0.8mm, and the brightness of the display screen is b=400 cd/m 2 The method comprises the steps of carrying out a first treatment on the surface of the Then by the formulaThe thicknesses of the 1 st to 10 th row pinholes in the gradual change pinhole array are respectively 0.571mm, 0.496mm, 0.421mm, 0.349mm, 0.275mm, 0.349mm, 0.421mm, 0.496mm and 0.571mm; by the formula->Calculating to obtain brightness a of the 1 st three-dimensional image and the 2 nd three-dimensional image to be 30cd/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The 1 st three-dimensional image and the 2 nd three-dimensional image have 10 rows and 10 columns of pixels; the number of pixels in each row of the 1 st three-dimensional image and the 2 nd three-dimensional image is 5, and the number of pixels in each column is 5; in the conventional integrated imaging double-view 3D display based on the parameters, the number of pixels in the odd-numbered lines of the 1 st three-dimensional image is 10, and the number of pixels in the even-numbered lines is 0; the number of pixels in the odd-numbered lines of the 2 nd three-dimensional image is 0, the number of pixels in the even-numbered lines is 10, the 2 nd three-dimensional image isThe brightness of the 1 st three-dimensional image and the 2 nd three-dimensional image are 20cd/m 2 。
Claims (2)
1. The double-vision 3D display device based on the gradual change slit grating is characterized by comprising a display screen, a polarization array, the gradual change slit grating, a 1 st polarized glasses and a 2 nd polarized glasses; the polarization array is tightly attached to the gradient slit grating; the display screen is characterized in that the centers of the polarization array and the gradient slit grating are corresponding and aligned, the thickness of any row of slits in the gradient slit grating is the same, the aperture width of any row of slits is the same, and the thickness and the aperture width of the slits are gradually increased from the middle to the two sides; the polarization array is formed by alternately arranging a 1 st polarization unit and a 2 nd polarization unit in the horizontal direction and the vertical direction, wherein the 1 st polarization unit is orthogonal to the polarization direction of the 2 nd polarization unit, and the polarization directions of the adjacent polarization units in the horizontal direction and the vertical direction of the polarization array are orthogonal; the polarization directions of the 1 st polarized glasses and the 1 st polarized unit are the same, and the polarization directions of the 2 nd polarized glasses and the 2 nd polarized unit are the same; the display screen is used for displaying a micro-image array, and the micro-image array is formed by alternately arranging the 1 st image element and the 2 nd image element in the horizontal and vertical directions; the 1 st image element is acquired through a 1 st three-dimensional scene, and the 2 nd image element is acquired through a 2 nd three-dimensional scene; the 1 st image element and the 2 nd image element respectively correspond to and are aligned with the 1 st polarization unit and the 2 nd polarization unit; in the micro image array, the light rays emitted from the leftmost side and the rightmost side of the 1 st image element positioned in the odd columns cannot pass through the slits corresponding to the 1 st image elements positioned in other odd columns; in the micro-image array, the light rays emitted from the leftmost side and the rightmost side of the 1 st image element positioned in the even number columns cannot pass through the slits corresponding to the 1 st image elements positioned in other even number columns; in the micro-image array, the light rays emitted from the leftmost side and the rightmost side of the 2 nd image elements positioned in the odd columns cannot pass through the slits corresponding to the 2 nd image elements positioned in other odd columns; in the micro image array, the leftmost and rightmost light rays of the 2 nd image elements positioned in even columns cannot pass through the light rays positioned in other even columnsA slit corresponding to the 2 nd picture element; the pitch of the 1 st image element, the pitch of the 2 nd image element, the pitch of the 1 st polarization unit, the pitch of the 2 nd polarization unit and the pitch of the slit are p, the gradient slit grating comprises m units, the distance between the display screen and the gradient slit grating is g, and the aperture width of the ith row of slits on the gradient slit grating is w i Thickness t of the ith row of slits on the gradient slit grating i Calculated from the following formula:
wherein i is a positive integer less than or equal to m; the brightness a of the 1 st three-dimensional image and the 2 nd three-dimensional image is calculated as follows:
2. the display method of the gradient slit grating-based dual-view 3D display device according to claim 1, comprising: the 1 st polarization unit and the 2 nd polarization unit with orthogonal polarization directions are alternately arranged in the horizontal direction and the vertical direction, the polarization directions of the adjacent polarization units in the horizontal direction and the vertical direction in the polarization array are orthogonal, and the 1 st image element and the 2 nd image element acquired through the 1 st three-dimensional scene and the 2 nd three-dimensional scene are respectively corresponding to and aligned with the 1 st polarization unit and the 2 nd polarization unit; the 1 st polarization unit modulates the light rays emitted by the 1 st image element into polarized light, and the polarized light reconstructs a 1 st three-dimensional image through the slit corresponding to the 1 st image element and can only be seen through the 1 st polarized glasses; the 2 nd polarization unit modulates the light rays emitted by the 2 nd image element into polarized light, and the polarized light reconstructs a 2 nd three-dimensional image through the slit corresponding to the 2 nd image element and can only be seen through the 2 nd polarization glasses; in the gradual change slit grating, the thickness of any row of slits is the same, the aperture width of any row of slits is the same, and the thickness and the aperture width of the slits gradually increase from the middle to the two sides; in the micro image array, the light rays emitted from the leftmost side and the rightmost side of the 1 st image element positioned in the odd columns cannot pass through the slits corresponding to the 1 st image elements positioned in other odd columns; in the micro-image array, the light rays emitted from the leftmost side and the rightmost side of the 1 st image element positioned in the even number columns cannot pass through the slits corresponding to the 1 st image elements positioned in other even number columns; in the micro-image array, the light rays emitted from the leftmost side and the rightmost side of the 2 nd image elements positioned in the odd columns cannot pass through the slits corresponding to the 2 nd image elements positioned in other odd columns; in the micro image array, the light rays emitted from the leftmost and rightmost image elements of the 2 nd image element in the even number columns cannot pass through the slits corresponding to the 2 nd image elements in the other even number columns.
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| CN109298536B (en) * | 2018-11-20 | 2023-09-12 | 成都航空职业技术学院 | One-dimensional double-view 3D display device |
| CN109239936B (en) * | 2018-11-20 | 2023-10-10 | 成都航空职业技术学院 | Integrated imaging 3D display device based on gradual change grating |
| CN109298538B (en) * | 2018-11-20 | 2024-03-26 | 成都航空职业技术学院 | Dual-view 3D display device with uniform optical efficiency |
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| CN108776388A (en) | 2018-11-09 |
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