CN103823308B - A kind of integration imaging double vision 3D display device based on polarization grating - Google Patents
A kind of integration imaging double vision 3D display device based on polarization grating Download PDFInfo
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Abstract
The present invention proposes a kind of integration imaging double vision 3D display device based on polarization grating.This device comprises the display screen showing micro-pattern matrix, microlens array, polarization grating I and polarization grating II.Display location is on the focal plane of microlens array, and the horizontal and vertical axis of display screen and the horizontal and vertical axis of microlens array is corresponding all respectively aligns.Polarization grating I and display screen fit tightly, and polarization grating II and microlens array fit tightly.Polarization grating I makes to become the linearly polarized light with different polarization direction by its light, and polarization grating II has modulating action to linearly polarized light, subgraph pixel in two micro-pattern matrixs of son rebuilds 3D scene through lens cells corresponding to this subgraph pixel to the left side of integration imaging image display or the right respectively, thus the double vision 3D realized based on integration imaging shows.
Description
Technical field
The present invention relates to double vision 3D to show, more particularly, the present invention relates to a kind of integration imaging double vision 3D display device based on polarization grating.
Background technology
Double vision display is the novel display of one occurred in recent years, its principle is the picture by display two is different on one display simultaneously, beholder on different view direction can only see one of them picture, thus realizes the different demands simultaneously meeting multiple beholder on one display.Existing double vision display by beam splitters such as parallax grating or post lens by two pictures separately, or allows beholder wear different filters, reaches the effect of an only display picture on a certain view direction.But existing double vision display existence obvious shortcoming: display frame is 2D picture, cannot realize 3D display.
Integration imaging 3D display is a kind of without the need to any true 3D display helping the equipment of looking.Integration imaging 3D display device make use of light path principle of reversibility, by pinhole array or microlens array, the steric information of 3D scene is recorded on image recorder, generate micro-pattern matrix, then this micro-pattern matrix is shown on display screen, reconstructs the stereo-picture of former 3D scene through pinhole array or microlens array.This display mode has the feature of bore hole viewing, and its record is relative with the process of display simple, and can show the stereo-picture of full parallax and authentic color, is one of major way during current 3D shows.
Summary of the invention
The present invention proposes a kind of integration imaging double vision 3D display device based on polarization grating.As shown in Figure 1, this device comprises the display screen (2) of the micro-pattern matrix of display (1), microlens array (3), polarization grating I(4) and polarization grating II(5).Display screen (2) is positioned on the focal plane of microlens array (3), and corresponding alignment is all distinguished with the horizontal and vertical axis of microlens array (3) in the horizontal and vertical axis of display screen (2).As shown in Figure 2, micro-pattern matrix (1) is by son micro-pattern matrix I(6) and the micro-pattern matrix II(7 of son) form, by 3D scene I(8) son micro-pattern matrix I(6 of obtaining) be positioned at the left-half of micro-pattern matrix (1), and by 3D scene II(9) son micro-pattern matrix II(7 of obtaining) be positioned at the right half part of micro-pattern matrix (1).The micro-pattern matrix I(7 of son) and son micro-pattern matrix II(8) be made up of the image primitive of series of identical size respectively, microlens array (3) is made up of the lens cells of series of identical size.Polarization grating I(4) fit tightly with display screen (2), polarization grating II(5) fit tightly with microlens array (3).Polarization grating I(4) by series of identical size grid line unit in the horizontal direction close-packed arrays form, each grid line unit only has a kind of polarization direction, and the polarization direction of two grid line unit of arbitrary neighborhood is orthogonal.Polarization grating II(5) by series of identical size grid line unit in the horizontal direction close-packed arrays form, being positioned at polarization grating II(5) the grid line unit of center is by two same sizes, the sub-grid line unit close-packed arrays composition in the horizontal direction that polarization direction is orthogonal, polarization grating II(5) in other grid line unit all only there is a kind of polarization direction, being positioned at polarization grating II(5) polarization direction of grid line unit that is adjacent respectively of the sub-grid line unit of the grid line unit of center is orthogonal, the polarization direction of two grid line unit of other arbitrary neighborhoods is orthogonal.
As shown in Figure 3, polarization grating I(4) make to become the linearly polarized light with different polarization direction by its light, and polarization grating II(5) to linearly polarized light, there is modulating action, make sub micro-pattern matrix I(6) in each image primitive reconstruct 3D scene I(8 through the lens cells in microlens array (3) corresponding to this image primitive on the right of integration imaging double vision 3D display device), the micro-pattern matrix II(7 of son) in each image primitive reconstruct 3D scene II(9 through the lens cells in microlens array (3) corresponding to this image primitive on the left side of integration imaging double vision 3D display device).In viewing ratio
lplace, present different 3D scenes, thus the integration imaging double vision 3D achieved based on polarization grating shows from the center of integration imaging double vision 3D display device respectively to left and right both direction.
Preferably, display screen comprises LCDs, plasma panel and organic EL display panel etc.
Preferably, more than the number of the lens cells in microlens array (3) horizontal direction one of the number of the image primitive in micro-pattern matrix (1) horizontal direction, the number of the image primitive in micro-pattern matrix (1) vertical direction is equal with the number of the lens cells in microlens array (3) vertical direction.
Preferably, the horizontal width of the image primitive of micro-pattern matrix (1) is greater than the horizontal width of the lens cells of microlens array (3), and the vertical width of the image primitive of micro-pattern matrix (1) equals the vertical width of the lens cells of microlens array (3).
Preferably, polarization grating I(4) can fit tightly in the dead ahead of display screen (2) or dead astern, polarization grating II(5) can fit tightly in the dead ahead of microlens array (3) or dead astern.
Preferably, polarization grating I(4) the number of grid line unit equal with the number of the image primitive in micro-pattern matrix (1) horizontal direction, polarization grating I(4) the horizontal width of grid line unit equal with the horizontal width of the image primitive of micro-pattern matrix (1), polarization grating I(4) the vertical width of grid line unit equal with the vertical width of micro-pattern matrix (1).
Preferably, polarization grating II(5) the number of grid line unit equal with the number of the lens cells in microlens array (3) horizontal direction, polarization grating II(5) the horizontal width of grid line unit equal with the horizontal width of the lens cells of microlens array (3), the horizontal width of sub-grid line unit is the half of the horizontal width of the lens cells of microlens array (3), polarization grating II(5) the vertical width of grid line unit equal with the vertical width of microlens array (3).
Preferably, viewing ratio
lwith the focal length of the lens cells of microlens array (3)
fmeet formula:
（1）
Wherein,
wfor the horizontal width of the image primitive of micro-pattern matrix (1),
pfor the horizontal width of the lens cells of microlens array (3),
ffor the focal length of the lens cells of microlens array (3).
Accompanying drawing explanation
Accompanying drawing 1 is the structural drawing of the double vision 3D display device based on polarization grating of the present invention
Accompanying drawing 2 is the arrangement schematic diagram of the micro-pattern matrix of son of the present invention
Accompanying drawing 3 is the vision area distribution plan of the double vision 3D display device based on polarization grating of the present invention
Shown by reference numeral in above-mentioned accompanying drawing is:
1 micro-pattern matrix, 2 display screens, 3 microlens arrays, 4 polarization grating I, 5 polarization grating II, 6 sub micro-pattern matrix I, 7 sub micro-pattern matrix II, 8 3D scene I, 9 3D scene II.
Embodiment
The following detailed description of the exemplary embodiments utilizing a kind of double vision 3D display device based on polarization grating of the present invention, the present invention is further described specifically.What be necessary to herein means out is; following examples are only described further for the present invention; limiting the scope of the invention can not be interpreted as; this art skilled person makes some nonessential improvement and adjustment according to the invention described above content to the present invention, still belongs to protection scope of the present invention.
As shown in Figure 1, this device comprises the display screen (2) of the micro-pattern matrix of display (1) to a kind of integration imaging double vision 3D display device based on polarization grating, microlens array (3), polarization grating I(4) and polarization grating II(5).Display screen (2) is positioned on the focal plane of microlens array (3), and corresponding alignment is all distinguished with the horizontal and vertical axis of microlens array (3) in the horizontal and vertical axis of display screen (2).As shown in Figure 2, micro-pattern matrix (1) is by two son micro-pattern matrix I(6) and the micro-pattern matrix II(7 of son) form, by 3D scene I(8) son micro-pattern matrix I(6 of obtaining) be positioned at the left-half of micro-pattern matrix (1), and by 3D scene II(9) son micro-pattern matrix II(7 of obtaining) be positioned at the right half part of micro-pattern matrix (1).The micro-pattern matrix I(7 of son) and the micro-pattern matrix II(8 of son) be made up of the image primitive of 24 ' 27 same sizes respectively, 24 image primitives in horizontal direction, 27 image primitives in vertical direction, the horizontal width of image primitive is
w=2.5mm, the vertical width of image primitive is 2.4mm; Microlens array (3) is made up of the lens cells of 47 ' 27 same sizes, 47 lens cells in horizontal direction, and 27 lens cells in vertical direction, the horizontal width of lens cells is
p=2.4mm, the vertical width of lens cells is 2.4mm, and the focal length of lens cells is
f=3mm.Polarization grating I(4) fit tightly with display screen (2), polarization grating II(5) fit tightly with microlens array (3).Polarization grating I(4) by 48 same sizes grid line unit in the horizontal direction close-packed arrays form, the horizontal width of grid line unit is 2.5mm, the vertical width of grid line unit is 64.8mm, each grid line unit only has a kind of polarization direction, and the polarization direction of two grid line unit of arbitrary neighborhood is orthogonal.Polarization grating II(5) by 47 same sizes grid line unit in the horizontal direction close-packed arrays form, the horizontal width of grid line unit is 2.4mm, the vertical width of grid line unit is 64.8mm, be positioned at polarization grating II(5) the grid line unit of center by the orthogonal sub-grid line unit in two polarization directions in the horizontal direction close-packed arrays form, the horizontal width of sub-grid line unit is 1.2mm, and the vertical width of sub-grid line unit is 64.8mm.Polarization grating II(5) in other grid line unit all only there is a kind of polarization direction, being positioned at polarization grating II(5) polarization direction of grid line unit that is adjacent respectively of the sub-grid line unit of the grid line unit of center is orthogonal, and the polarization direction of two grid line unit of other arbitrary neighborhoods is orthogonal.
As shown in Figure 3, polarization grating I(4) make to become the linearly polarized light with different polarization direction by its light, and polarization grating II(5) to linearly polarized light, there is modulating action, make sub micro-pattern matrix I(6) in each image primitive reconstruct 3D scene I(8 through the lens cells in microlens array (3) corresponding to this image primitive on the right of integration imaging double vision 3D display device), the micro-pattern matrix II(7 of son) in each image primitive reconstruct 3D scene II(9 through the lens cells in microlens array (3) corresponding to this image primitive on the left side of integration imaging double vision 3D display device).Viewing ratio is determined by following formula:
, wherein,
wfor the horizontal width of the image primitive of micro-pattern matrix (1),
pfor the horizontal width of the lens cells of microlens array (3),
ffor the focal length of the lens cells of microlens array (3).By calculating
l=75mm, presents different 3D scenes from the center of integration imaging double vision 3D display device respectively to left and right both direction, thus the integration imaging double vision 3D achieved based on polarization grating shows.
Claims (7)
1. the integration imaging double vision 3D display device based on polarization grating, it is characterized in that, this device comprises the display screen (2) of the micro-pattern matrix of display (1), microlens array (3), polarization grating I (4) and polarization grating II (5), display screen (2) is positioned on the focal plane of microlens array (3), and corresponding alignment is all distinguished with the horizontal and vertical axis of microlens array (3) in the horizontal and vertical axis of display screen (2), micro-pattern matrix (1) is made up of son micro-pattern matrix I (6) and the micro-pattern matrix II (7) of son, son micro-pattern matrix I (6) obtained by 3D scene I (8) is positioned at the left-half of micro-pattern matrix (1), and is positioned at the right half part of micro-pattern matrix (1) by son micro-pattern matrix II (7) that 3D scene II (9) obtains, the micro-pattern matrix I (7) of son and son micro-pattern matrix II (8) are made up of the image primitive of series of identical size respectively, and microlens array (3) is made up of the lens cells of series of identical size, polarization grating I (4) and display screen (2) fit tightly, and polarization grating II (5) and microlens array (3) fit tightly, polarization grating I (4) by series of identical size grid line unit in the horizontal direction close-packed arrays form, each grid line unit only has a kind of polarization direction, and the polarization direction of two grid line unit of arbitrary neighborhood is orthogonal, polarization grating II (5) by series of identical size grid line unit in the horizontal direction close-packed arrays form, be positioned at the grid line unit of polarization grating II (5) center by two same sizes, the sub-grid line unit close-packed arrays composition in the horizontal direction that polarization direction is orthogonal, in polarization grating II (5), other grid line unit all only has a kind of polarization direction, the polarization direction of the grid line unit that the sub-grid line unit being positioned at the grid line unit of polarization grating II (5) center is adjacent respectively is orthogonal, the polarization direction of two grid line unit of other arbitrary neighborhoods is orthogonal, polarization grating I (4) makes to become the linearly polarized light with different polarization direction by its light, and polarization grating II (5) has modulating action to linearly polarized light, the each image primitive in sub micro-pattern matrix I (6) is made to reconstruct 3D scene I (8) through the lens cells in microlens array (3) corresponding to this image primitive on the right of integration imaging double vision 3D display device, each image primitive in the micro-pattern matrix II (7) of son reconstructs 3D scene II (9) through the lens cells in microlens array (3) corresponding to this image primitive on the left side of integration imaging double vision 3D display device, at viewing ratio place, different 3D scenes is presented respectively to left and right both direction from the center of integration imaging double vision 3D display device, thus the integration imaging double vision 3D achieved based on polarization grating shows, the focal distance f of the lens cells of viewing ratio l and microlens array (3) meets formula
w is the horizontal width of the image primitive of micro-pattern matrix (1), and p is the horizontal width of the lens cells of microlens array (3), and f is the focal length of the lens cells of microlens array (3).
2. a kind of integration imaging double vision 3D display device based on polarization grating according to claim 1, it is characterized in that, display screen comprises LCDs, plasma panel and organic EL display panel.
3. a kind of integration imaging double vision 3D display device based on polarization grating according to claim 1, it is characterized in that, more than the number of the lens cells in microlens array (3) horizontal direction one of the number of the image primitive in micro-pattern matrix (1) horizontal direction, the number of the image primitive in micro-pattern matrix (1) vertical direction is equal with the number of the lens cells in microlens array (3) vertical direction.
4. a kind of integration imaging double vision 3D display device based on polarization grating according to claim 1, it is characterized in that, the horizontal width of the image primitive of micro-pattern matrix (1) is greater than the horizontal width of the lens cells of microlens array (3), and the vertical width of the image primitive of micro-pattern matrix (1) equals the vertical width of the lens cells of microlens array (3).
5. a kind of integration imaging double vision 3D display device based on polarization grating according to claim 1, it is characterized in that, polarization grating I (4) fits tightly in the dead ahead of display screen (2) or dead astern, and polarization grating II (5) fits tightly in the dead ahead of microlens array (3) or dead astern.
6. a kind of integration imaging double vision 3D display device based on polarization grating according to claim 1, it is characterized in that, the number of the grid line unit of polarization grating I (4) is equal with the number of the image primitive in micro-pattern matrix (1) horizontal direction, the horizontal width of the grid line unit of polarization grating I (4) is equal with the horizontal width of the image primitive of micro-pattern matrix (1), and the vertical width of the grid line unit of polarization grating I (4) is equal with the vertical width of micro-pattern matrix (1).
7. a kind of integration imaging double vision 3D display device based on polarization grating according to claim 1, it is characterized in that, the number of the grid line unit of polarization grating II (5) is equal with the number of the lens cells in microlens array (3) horizontal direction, the horizontal width of the grid line unit of polarization grating II (5) is equal with the horizontal width of the lens cells of microlens array (3), the horizontal width of sub-grid line unit is the half of the horizontal width of the lens cells of microlens array (3), the vertical width of the grid line unit of polarization grating II (5) is equal with the vertical width of microlens array (3).
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