CN206863360U - Wide viewing angle one-dimensional integrated imaging 3D display device based on polarization grating - Google Patents
Wide viewing angle one-dimensional integrated imaging 3D display device based on polarization grating Download PDFInfo
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- CN206863360U CN206863360U CN201720796415.3U CN201720796415U CN206863360U CN 206863360 U CN206863360 U CN 206863360U CN 201720796415 U CN201720796415 U CN 201720796415U CN 206863360 U CN206863360 U CN 206863360U
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- grating
- slit
- polarization
- image primitive
- polarization grating
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Abstract
The utility model discloses a kind of wide viewing angle one-dimensional integrated imaging 3D display device based on polarization grating, including 2D display screens, polarization grating I, polarization grating II, slit grating.Polarization grating I to be changed into the polarised light with different polarization direction by its light, and polarization grating II has modulating action to polarised light, so as to expand the imaging region of each image primitive；Positioned at the center of the slit of slit grating center and the center alignment of the image primitive positioned at micro- pattern matrix center, adjacent slots are arranged with constant spacing in slit grating, so that the imaging region of each image primitive overlaps at viewing ratio, so as to realize wide viewing angle one-dimensional integrated imaging 3D display.
Description
Technical field
Integration imaging 3D display is the utility model is related to, more specifically, one kind is the utility model is related to and is based on polarised light
The wide viewing angle one-dimensional integrated imaging 3D display device of grid.
Background technology
Integration imaging 3D display device make use of light path principle, by pinhole array or microlens array by 3D fields
The steric information of scape recorded on image recorder, generate micro- pattern matrix, and micro- pattern matrix, which is then shown in 2D, shows
In display screen, the stereo-picture of former 3D scenes is reconstructed through pinhole array or microlens array.But integration imaging 3D display
Device there is also some shortcoming and deficiency, such as：The narrow problem such as low with resolution ratio of viewing visual angle.Taken by using slit grating
For the pinhole array or microlens array in two-dimentional integration imaging 3D display, one-dimensional integrated imaging 3D display can increase 3D figures
The horizontal or vertical resolution ratio of picture.In addition, the one-dimensional integrated imaging 3D display device based on slit grating has, cost is low, weight
Small, the advantages that thickness of detector is thin and pitch is not limited by manufacture craft.But current one-dimensional based on slit grating is integrated into
As 3D display device still has the shortcomings of viewing visual angle is narrow, so as to limit its practical application.
As shown in Figure 1, in traditional integration imaging 3D display device based on slit grating, an image primitive is sent
Light normal 3D rendering is formd by slit corresponding to it；But one that the image primitive adjacent with the image primitive is sent
Light splitter causes the crosstalk between neighbor map pixel, so as to reduce the imaging region of each image primitive also by the slit.
In addition, in traditional integration imaging 3D display device based on slit grating, viewing vision area is the imaging area of all image primitives
The common portion in domain, as shown in Fig. 2 at viewing distance l, traditional integration imaging 3D display device based on slit grating
Viewing visual angle θ is：
Wherein, w is the aperture of slit, and p is the width of image primitive, and g is the spacing of 2D display screens and slit grating, m
For the number of image primitive in micro- pattern matrix.In traditional integration imaging 3D display device based on slit grating, viewing regards
The aperture of angle and slit is inversely proportional, and is inversely proportional with the number of image primitive in micro- pattern matrix.That is, traditional based on slit
In the integration imaging 3D display device of grating, viewing visual angle can be increased by reducing the aperture of slit, but can subtract
Small optical efficiency；Viewing visual angle can be increased by reducing the number of image primitive in micro- pattern matrix, but resolution can be reduced
Rate.
The content of the invention
The utility model proposes a kind of wide viewing angle one-dimensional integrated imaging 3D display device based on polarization grating.Such as accompanying drawing 3
Shown, the device includes 2D display screens, polarization grating I, polarization grating II, slit grating.2D display screens are used to show micro- image
Array.Polarization grating I and 2D display screens are brought into close contact, and polarization grating II is brought into close contact with slit grating.Polarization grating I is by a system
The grid line unit close-packed arrays composition of identical size is arranged, each grid line unit only has a kind of polarization direction, and the two of arbitrary neighborhood
The polarization direction of individual grid line unit is orthogonal.The number of grid line unit and the number of image primitive in micro- pattern matrix in polarization grating I
Equal, the width of grid line unit is equal with the width of image primitive in micro- pattern matrix in polarization grating I.Polarization grating II is by a system
The grid line unit close-packed arrays composition of identical size is arranged, each grid line unit only has a kind of polarization direction, and the two of arbitrary neighborhood
The polarization direction of individual grid line unit is orthogonal.The number of grid line unit and the number phase of slit in slit grating in polarization grating II
Deng the width of grid line unit is equal with the width of slit in slit grating in polarization grating II.Corresponding to each image primitive partially
Shake in grating I the inclined of grid line unit in polarization grating II corresponding to the polarization direction slit corresponding with the image primitive of grid line unit
The direction that shakes is identical, and polarization grating I to be changed into the polarised light with different polarization direction by its light, and II pairs of polarization grating
Polarised light has modulating action so that each image primitive reconstructs normally through slit corresponding to the image primitive in micro- pattern matrix
3D rendering, and the light that the image primitive adjacent with the image primitive is sent can not pass through the slit.Characterized in that, polarization grating makes
The light that sends of each image primitive can only be by its corresponding slit image, so as to expand the imaging area of each image primitive
Domain；Positioned at the center of the slit of slit grating center and the center pair of the image primitive positioned at micro- pattern matrix center
Together, adjacent slots are arranged with constant spacing in slit grating so that the imaging region of each image primitive is at viewing ratio
Overlap, so as to realize wide viewing angle one-dimensional integrated imaging 3D display.
As shown in Figure 3, the width of image primitive is p, viewing ratio l, 2D display screen and slit grating spacing
For g, micro- pattern matrix includes m unit with slit grating, and the aperture positioned at the slit of slit grating center is
W, then the spacing d of adjacent slots is calculated by following formula in slit grating：
The viewing visual angle of wide viewing angle one-dimensional integrated imaging 3D display device described in the utility model based on polarization grating
θ ' is calculated as follows：
Therefore, the viewing visual angle of wide viewing angle one-dimensional integrated imaging 3D display device based on polarization grating and the aperture of slit
Width is directly proportional, unrelated with the number of image primitive in micro- pattern matrix.Therefore the utility model is not reducing optical efficiency and divided
On the premise of resolution, wide viewing angle one-dimensional integrated imaging 3D display is realized.
Brief description of the drawings
Accompanying drawing 1 is neighbor map pixel crosstalk schematic diagram in traditional integration imaging 3D display based on slit grating
Accompanying drawing 2 is the viewing visual angle schematic diagram of traditional integration imaging 3D display device based on slit grating
Accompanying drawing 3 is the principle and parameter schematic diagram of integration imaging 3D display device of the present utility model.
Shown by reference numeral in above-mentioned accompanying drawing is：
1. micro- pattern matrix, 2. slit gratings, 3. image primitives, 4. traditional integration imaging 3D displays based on slit grating
Middle single image member forms the stoichiometric region of normal 3D rendering, single in 5. traditional integration imaging 3D displays based on slit grating
Individual image primitive forms the actual area of normal 3D rendering, neighbor map in 6. traditional integration imaging 3D displays based on slit grating
The crosstalk zone that pixel is formed, 7.2D display screens, 8. polarization grating I of the present utility model, 9. polarization gratings of the present utility model
II, 10. slit gratings of the present utility model.
It should be appreciated that above-mentioned accompanying drawing is simply schematical, it is not drawn to draw.
5th, embodiment
The following detailed description of utilization wide viewing angle one-dimensional integrated imaging 3D display device of the utility model based on polarization grating
An exemplary embodiments, the utility model is further described specifically.It is necessarily pointed out that implement below
Example is served only for the utility model and is described further, it is impossible to is interpreted as the limitation to scope of protection of the utility model, the field
Person skilled in the art makes some nonessential modifications and adaptations to the utility model according to above-mentioned the utility model content, still belongs to
In the scope of protection of the utility model.
The utility model proposes a kind of wide viewing angle one-dimensional integrated imaging 3D display device based on polarization grating.Such as accompanying drawing 3
Shown, the device includes 2D display screens, polarization grating I, polarization grating II, slit grating.2D display screens are used to show micro- image
Array.Polarization grating I and 2D display screens are brought into close contact, and polarization grating II is brought into close contact with slit grating.Polarization grating I is by a system
The grid line unit close-packed arrays composition of identical size is arranged, each grid line unit only has a kind of polarization direction, and the two of arbitrary neighborhood
The polarization direction of individual grid line unit is orthogonal.The number of grid line unit and the number of image primitive in micro- pattern matrix in polarization grating I
Equal, the width of grid line unit is equal with the width of image primitive in micro- pattern matrix in polarization grating I.Polarization grating II is by a system
The grid line unit close-packed arrays composition of identical size is arranged, each grid line unit only has a kind of polarization direction, and the two of arbitrary neighborhood
The polarization direction of individual grid line unit is orthogonal.The number of grid line unit and the number phase of slit in slit grating in polarization grating II
Deng the width of grid line unit is equal with the width of slit in slit grating in polarization grating II.Corresponding to each image primitive partially
Shake in grating I the inclined of grid line unit in polarization grating II corresponding to the polarization direction slit corresponding with the image primitive of grid line unit
The direction that shakes is identical, and polarization grating I to be changed into the polarised light with different polarization direction by its light, and II pairs of polarization grating
Polarised light has modulating action so that each image primitive reconstructs normally through slit corresponding to the image primitive in micro- pattern matrix
3D rendering, and the light that the image primitive adjacent with the image primitive is sent can not pass through the slit.Characterized in that, polarization grating makes
The light that sends of each image primitive can only be by its corresponding slit image, so as to expand the imaging area of each image primitive
Domain；Positioned at the center of the slit of slit grating center and the center pair of the image primitive positioned at micro- pattern matrix center
Together, adjacent slots are arranged with constant spacing in slit grating so that the imaging region of each image primitive is at viewing ratio
Overlap, so as to realize wide viewing angle one-dimensional integrated imaging 3D display.
As shown in Figure 3, the width of image primitive is p, viewing ratio l, 2D display screen and slit grating spacing
For g, micro- pattern matrix includes m unit with slit grating, and the aperture positioned at the slit of slit grating center is
W, then the spacing d of adjacent slots is calculated by following formula in slit grating：
The viewing visual angle of wide viewing angle one-dimensional integrated imaging 3D display device described in the utility model based on polarization grating
θ ' is calculated as follows：
Therefore, the viewing visual angle of wide viewing angle one-dimensional integrated imaging 3D display device based on polarization grating and the aperture of slit
Width is directly proportional, unrelated with the number of image primitive in micro- pattern matrix.Therefore the utility model is not reducing optical efficiency and divided
On the premise of resolution, wide viewing angle one-dimensional integrated imaging 3D display is realized.
Micro- pattern matrix and slit grating include 48 units, and the spacing of 2D display screens and slit grating is g=5mm,
The width of image primitive is p=5mm, and the aperture of slit is w=1mm, viewing ratio l=490mm, then by formulaThe spacing d=3.95mm of adjacent slots in slit grating is calculated.According to formula
Viewing visual angle to integration imaging 3D display device described in the utility model is 62 °；And traditional collection based on above-mentioned parameter
Viewing visual angle into imaging 3D display device is 19 °.Therefore, integration imaging 3D display device described in the utility model realizes
Wide viewing angle one-dimensional integrated imaging 3D display.
Claims (1)
1. the wide viewing angle one-dimensional integrated imaging 3D display device based on polarization grating；The device includes 2D display screens, polarization grating
I, polarization grating II, slit grating；2D display screens are used to show micro- pattern matrix；Polarization grating I and 2D display screens are brought into close contact,
Polarization grating II is brought into close contact with slit grating；Polarization grating I is made up of the grid line unit close-packed arrays of series of identical size,
Each grid line unit only has a kind of polarization direction, and the polarization direction of two grid line units of arbitrary neighborhood is orthogonal；Polarization grating I
The number of middle grid line unit is equal with the number of image primitive in micro- pattern matrix, in polarization grating I the width of grid line unit with it is micro-
The width of image primitive is equal in pattern matrix；Polarization grating II is made up of the grid line unit close-packed arrays of series of identical size,
Each grid line unit only has a kind of polarization direction, and the polarization direction of two grid line units of arbitrary neighborhood is orthogonal；Polarization grating
The number of grid line unit is equal with the number of slit in slit grating in II, the width and slit of grid line unit in polarization grating II
The width of slit is equal in grating；The polarization direction of grid line unit and the image in polarization grating I corresponding to each image primitive
The polarization direction of grid line unit is identical in polarization grating II corresponding to slit corresponding to member, and polarization grating I causes the light by it
It is changed into the polarised light with different polarization direction, and polarization grating II has modulating action to polarised light so that micro- pattern matrix
In each image primitive reconstruct normal 3D rendering, and the image primitive adjacent with image primitive hair through slit corresponding to the image primitive
The light gone out can not pass through the slit；Characterized in that, polarization grating causes the light that each image primitive is sent to pass through it
Corresponding slit image, so as to expand the imaging region of each image primitive；In the slit of slit grating center
The center alignment of the heart and the image primitive positioned at micro- pattern matrix center, adjacent slots are arranged with constant spacing in slit grating
Row so that the imaging region of each image primitive overlaps at viewing ratio, so as to realize wide viewing angle one-dimensional integrated imaging 3D
Display；
The width of image primitive is p, and the spacing of viewing ratio l, 2D display screen and slit grating is g, micro- pattern matrix with
Slit grating includes m unit, and the aperture positioned at the slit of slit grating center is w, then phase in slit grating
The spacing d of adjacent slit is calculated by following formula：
<mrow>
<mi>d</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mi>l</mi>
<mi>p</mi>
</mrow>
<mrow>
<mi>l</mi>
<mo>+</mo>
<mi>g</mi>
</mrow>
</mfrac>
<mo>-</mo>
<mi>w</mi>
</mrow>
Viewing visual angle θ ' the meters of wide viewing angle one-dimensional integrated imaging 3D display device described in the utility model based on polarization grating
Calculate as follows：
<mrow>
<msup>
<mi>&theta;</mi>
<mo>&prime;</mo>
</msup>
<mo>=</mo>
<mn>2</mn>
<mi>a</mi>
<mi>r</mi>
<mi>c</mi>
<mi>t</mi>
<mi>a</mi>
<mi>n</mi>
<mrow>
<mo>(</mo>
<mfrac>
<mrow>
<mi>p</mi>
<mo>+</mo>
<mi>w</mi>
</mrow>
<mrow>
<mn>2</mn>
<mi>g</mi>
</mrow>
</mfrac>
<mo>)</mo>
</mrow>
</mrow>
Therefore, the viewing visual angle of wide viewing angle one-dimensional integrated imaging 3D display device and the aperture of slit based on polarization grating
It is directly proportional, it is unrelated with the number of image primitive in micro- pattern matrix；Therefore the utility model is not reducing optical efficiency and resolution ratio
On the premise of, realize wide viewing angle one-dimensional integrated imaging 3D display.
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| CN201720796415.3U CN206863360U (en) | 2017-07-04 | 2017-07-04 | Wide viewing angle one-dimensional integrated imaging 3D display device based on polarization grating |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108776387A (en) * | 2018-08-13 | 2018-11-09 | 成都工业学院 | The double vision 3D display device and method of non-uniform resolution and uniform visual angle |
| CN109254413A (en) * | 2018-11-20 | 2019-01-22 | 成都工业学院 | Double vision 3D display device based on gradual change grating |
| CN109298536A (en) * | 2018-11-20 | 2019-02-01 | 成都工业学院 | A kind of one-dimensional double vision 3D display device |
| CN113031297A (en) * | 2021-04-01 | 2021-06-25 | 成都工业学院 | Double-vision 3D display method based on polarized glasses |
| CN114895479A (en) * | 2022-05-18 | 2022-08-12 | 成都工业学院 | Wide-viewing-angle double-view 3D display device |
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2017
- 2017-07-04 CN CN201720796415.3U patent/CN206863360U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108776387A (en) * | 2018-08-13 | 2018-11-09 | 成都工业学院 | The double vision 3D display device and method of non-uniform resolution and uniform visual angle |
| CN109254413A (en) * | 2018-11-20 | 2019-01-22 | 成都工业学院 | Double vision 3D display device based on gradual change grating |
| CN109298536A (en) * | 2018-11-20 | 2019-02-01 | 成都工业学院 | A kind of one-dimensional double vision 3D display device |
| CN109254413B (en) * | 2018-11-20 | 2023-09-12 | 成都航空职业技术学院 | Double-vision 3D display device based on gradual change grating |
| 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 |
| CN113031297A (en) * | 2021-04-01 | 2021-06-25 | 成都工业学院 | Double-vision 3D display method based on polarized glasses |
| CN114895479A (en) * | 2022-05-18 | 2022-08-12 | 成都工业学院 | Wide-viewing-angle double-view 3D display device |
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Granted publication date: 20180109 Termination date: 20210704 |