CN209265093U - Based on gradual change slit grating without crosstalk double vision 3D display device - Google Patents
Based on gradual change slit grating without crosstalk double vision 3D display device Download PDFInfo
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- CN209265093U CN209265093U CN201920124936.3U CN201920124936U CN209265093U CN 209265093 U CN209265093 U CN 209265093U CN 201920124936 U CN201920124936 U CN 201920124936U CN 209265093 U CN209265093 U CN 209265093U
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- 208000003164 Diplopia Diseases 0.000 title abstract description 8
- 208000029444 double vision Diseases 0.000 title abstract description 8
- 230000010287 polarization Effects 0.000 claims abstract description 61
- 239000011521 glass Substances 0.000 claims abstract description 16
- 241001000340 Sitticus Species 0.000 claims description 3
- 230000031700 light absorption Effects 0.000 abstract 1
- 238000003384 imaging method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Abstract
The utility model discloses based on gradual change slit grating without crosstalk double vision 3D display device, including backlight, polarization grating, gradual change slit grating, display screen, polarising glass 1, polarising glass 2；In gradual change slit grating, the thickness of all slits is identical, and the pitch of the slit of any one column is identical, and the aperture of the slit of any one column is identical, and the pitch of gradual change slit grating and aperture are gradually increased from centre to both sides；Gradual change slit grating is reflective layer close to the face of backlight, and the hole wall of slit is light-absorption layer；Eliminate crosstalk between image primitive 1, the crosstalk between image primitive 2 and the crosstalk between image primitive 1 and image primitive 2.
Description
Technical Field
The utility model relates to a double vision 3D shows, more specifically says, the utility model relates to a double vision 3D display device of no crosstalk based on gradual change slit grating.
Background
The one-dimensional integrated imaging double-view 3D display is the fusion of a double-view display technology and a one-dimensional integrated imaging 3D display technology. It may enable the viewer to see different 3D pictures in different viewing directions. The one-dimensional integrated imaging double-vision 3D display has the advantages of high resolution and the like. However, the existing one-dimensional integrated imaging dual-view 3D display has crosstalk, thereby limiting its wide application.
Disclosure of Invention
The utility model provides a double-vision 3D display device without crosstalk based on gradual change slit grating, as shown in figure 1, which is characterized in that the device comprises a backlight source, a polarization grating, a gradual change slit grating, a display screen, polarization glasses 1 and polarization glasses 2; the backlight source, the polarization grating, the gradual change slit grating and the display screen are arranged in parallel and are correspondingly aligned; the gradient slit grating is positioned between the backlight source and the display screen, and the polarization grating is attached to the display screen; in the gradient slit grating, the thickness of all slits is the same, the pitch of the slits in any row is the same, the aperture width of the slits in any row is the same, and the pitch and the aperture width of the gradient slit grating are gradually increased from the middle to two sides; the surface of the gradient slit grating close to the backlight source is a light reflecting layer, and the hole wall of the slit is a light absorbing layer; as shown in fig. 2, the polarization grating is formed by alternately arranging a polarization unit 1 and a polarization unit 2, the polarization directions of the polarization unit 1 and the polarization unit 2 are orthogonal, and the pitch of the polarization unit is equal to that of the corresponding slit; the display screen is used for displaying a micro-image array, and the micro-image array is formed by alternately arranging image elements 1 and 2, as shown in the attached figure 3; the image element 1 is obtained through a 3D scene 1, and the image element 2 is obtained through a 3D scene 2; each picture element 1 is entirely illuminated by light passing through the corresponding slit and light passing through each slit illuminates only the corresponding picture element 1, thereby eliminating crosstalk between the picture elements 1; each picture element 2 is entirely illuminated by light passing through the corresponding slit and light passing through each slit illuminates only the corresponding picture element 2, thereby eliminating crosstalk between the picture elements 2; the polarization direction of the polarization glasses 1 is the same as that of the polarization unit 1, and the polarization direction of the polarization glasses 2 is the same as that of the polarization unit 2, so that crosstalk between the image elements 1 and 2 is eliminated;
aperture width of slit at central position of gradient slit gratingwComprises the following steps:
（1）
wherein,pis the pitch of the slit in the center of the graded slit grating,tis the thickness of the gradual-change slit grating,gis the distance between the gradual change slit grating and the display screen,dthe distance between the backlight source and the gradual change slit grating;
gradual change slit gratingiPitch of column slitH i And a firstiAperture width of column slitA i Respectively as follows:
（2）
（3）
wherein,mthe number of the slits in the gradual change slit grating,iis less than or equal tomIs a positive integer of (a) to (b),lis the viewing distance.
Drawings
FIG. 1 is a structural and parameter diagram of the present invention
FIG. 2 is a schematic diagram of the arrangement of the polarization grating of the present invention
FIG. 3 is a schematic diagram of the arrangement of the micro-image array of the present invention
The reference numbers in the figures are:
1 backlight source, 2 display screens, 3 polarization gratings, 4 gradient slit gratings, 5 polarization glasses 1, 6 polarization glasses 2, 7 polarization units 1, 8 polarization units 2, 9 micro-image arrays, 10 image elements 1, 11 image elements 2, 123D images 1, 133D images 2.
Detailed Description
The following detailed description is of an exemplary embodiment of the invention in which the invention is utilized and further detailed. It is necessary to point out here that the following examples are only used for further illustration of the present invention, and should not be understood as limiting the scope of the present invention, and those skilled in the art can make some non-essential improvements and modifications to the present invention according to the above-mentioned contents of the present invention, and still fall into the scope of the present invention.
The utility model provides a double-vision 3D display device without crosstalk based on gradual change slit grating, as shown in figure 1, which is characterized in that the device comprises a backlight source, a polarization grating, a gradual change slit grating, a display screen, polarization glasses 1 and polarization glasses 2; the backlight source, the polarization grating, the gradual change slit grating and the display screen are arranged in parallel and are correspondingly aligned; the gradient slit grating is positioned between the backlight source and the display screen, and the polarization grating is attached to the display screen; in the gradient slit grating, the thickness of all slits is the same, the pitch of the slits in any row is the same, the aperture width of the slits in any row is the same, and the pitch and the aperture width of the gradient slit grating are gradually increased from the middle to two sides; the surface of the gradient slit grating close to the backlight source is a light reflecting layer, and the hole wall of the slit is a light absorbing layer; as shown in fig. 2, the polarization grating is formed by alternately arranging a polarization unit 1 and a polarization unit 2, the polarization directions of the polarization unit 1 and the polarization unit 2 are orthogonal, and the pitch of the polarization unit is equal to that of the corresponding slit; the display screen is used for displaying a micro-image array, and the micro-image array is formed by alternately arranging image elements 1 and 2, as shown in the attached figure 3; the image element 1 is obtained through a 3D scene 1, and the image element 2 is obtained through a 3D scene 2; each picture element 1 is entirely illuminated by light passing through the corresponding slit and light passing through each slit illuminates only the corresponding picture element 1, thereby eliminating crosstalk between the picture elements 1; each picture element 2 is entirely illuminated by light passing through the corresponding slit and light passing through each slit illuminates only the corresponding picture element 2, thereby eliminating crosstalk between the picture elements 2; the polarization direction of the polarization glasses 1 is the same as that of the polarization unit 1, and the polarization direction of the polarization glasses 2 is the same as that of the polarization unit 2, so that crosstalk between the image elements 1 and 2 is eliminated;
aperture width of slit at central position of gradient slit gratingwComprises the following steps:
（1）
wherein,pis the pitch of the slit in the center of the graded slit grating,tis the thickness of the gradual-change slit grating,gis the distance between the gradual change slit grating and the display screen,dthe distance between the backlight source and the gradual change slit grating;
gradual change slit gratingiPitch of column slitH i And a firstiAperture width of column slitA i Respectively as follows:
（2）
（3）
wherein,mthe number of the slits in the gradual change slit grating,iis less than or equal tomIs a positive integer of (a) to (b),lis the viewing distance.
The pitch of the slit positioned at the central position of the gradual change slit grating isp=5mm, the thickness of the gradual change slit grating ist=2mm, the distance between the gradual change slit grating and the display screen isg=6mm, and the distance between the backlight source and the gradual change slit grating isd=1mm, viewing distancelIf the number of slits in the gradient slit grating is 6, the aperture width of the slit located at the center of the gradient slit grating is 1.6mm as calculated by formula (1), the pitch of the slits in the 1 st to 5 th rows of slits is 6mm, 5.5mm, 5mm, 5mm, 5.5mm, and 6mm as calculated by formula (2), and the aperture width of the slits in the 1 st to 5 th rows of slits is 1.94mm, 1.76mm, 1.6mm, 1.6mm, 1.76mm, and 1.94mm as calculated by formula (3).
Claims (1)
1. The crosstalk-free double-view 3D display device based on the gradient slit grating is characterized by comprising a backlight source, a polarization grating, the gradient slit grating, a display screen, polarization glasses 1 and polarization glasses 2; the backlight source, the polarization grating, the gradual change slit grating and the display screen are arranged in parallel and are correspondingly aligned; the gradient slit grating is positioned between the backlight source and the display screen, and the polarization grating is attached to the display screen; in the gradient slit grating, the thickness of all slits is the same, the pitch of the slits in any row is the same, the aperture width of the slits in any row is the same, and the pitch and the aperture width of the gradient slit grating are gradually increased from the middle to two sides; the surface of the gradient slit grating close to the backlight source is a light reflecting layer, and the hole wall of the slit is a light absorbing layer; the polarization grating is formed by alternately arranging a polarization unit 1 and a polarization unit 2, the polarization directions of the polarization unit 1 and the polarization unit 2 are orthogonal, and the pitch of the polarization unit is equal to that of the corresponding slit; the display screen is used for displaying a micro-image array, and the micro-image array is formed by alternately arranging image elements 1 and 2; the image element 1 is obtained through a 3D scene 1, and the image element 2 is obtained through a 3D scene 2; each picture element 1 is entirely illuminated by light passing through the corresponding slit and light passing through each slit illuminates only the corresponding picture element 1, thereby eliminating crosstalk between the picture elements 1; each picture element 2 is entirely illuminated by light passing through the corresponding slit and light passing through each slit illuminates only the corresponding picture element 2, thereby eliminating crosstalk between the picture elements 2; the polarization direction of the polarization glasses 1 is the same as that of the polarization unit 1, and the polarization direction of the polarization glasses 2 is the same as that of the polarization unit 2, so that crosstalk between the image elements 1 and 2 is eliminated;
aperture width of slit at central position of gradient slit gratingwComprises the following steps:
wherein,pis the pitch of the slit in the center of the graded slit grating,tis the thickness of the gradual-change slit grating,gis the distance between the gradual change slit grating and the display screen,dthe distance between the backlight source and the gradual change slit grating;
gradual change slit gratingiPitch of column slitH i And a firstiAperture width of column slitA i Respectively as follows:
wherein,mthe number of the slits in the gradual change slit grating,iis less than or equal tomIs a positive integer of (a) to (b),lis the viewing distance.
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| CN201920124936.3U CN209265093U (en) | 2019-01-25 | 2019-01-25 | Based on gradual change slit grating without crosstalk double vision 3D display device |
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| CN201920124936.3U CN209265093U (en) | 2019-01-25 | 2019-01-25 | Based on gradual change slit grating without crosstalk double vision 3D display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458897A (en) * | 2020-06-02 | 2020-07-28 | 上海济丽信息技术有限公司 | Crosstalk quantitative estimation method of slit grating naked eye 3D display |
| CN114815296A (en) * | 2022-05-18 | 2022-07-29 | 成都工业学院 | Double-vision 3D display device based on composite polaroid and gradient slit grating |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458897A (en) * | 2020-06-02 | 2020-07-28 | 上海济丽信息技术有限公司 | Crosstalk quantitative estimation method of slit grating naked eye 3D display |
| CN111458897B (en) * | 2020-06-02 | 2022-02-08 | 上海济丽信息技术有限公司 | Crosstalk quantitative estimation method of slit grating naked eye 3D display |
| CN114815296A (en) * | 2022-05-18 | 2022-07-29 | 成都工业学院 | Double-vision 3D display device based on composite polaroid and gradient slit grating |
| CN114815296B (en) * | 2022-05-18 | 2024-05-14 | 成都工业学院 | Double-vision 3D display device based on composite polaroid and gradient slit grating |
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