CN109343229B - Stereoscopic display device for far vision - Google Patents
Stereoscopic display device for far vision Download PDFInfo
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- CN109343229B CN109343229B CN201811486636.6A CN201811486636A CN109343229B CN 109343229 B CN109343229 B CN 109343229B CN 201811486636 A CN201811486636 A CN 201811486636A CN 109343229 B CN109343229 B CN 109343229B
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- 230000000737 periodic effect Effects 0.000 claims abstract description 20
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- 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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- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention provides a stereoscopic display device with far vision. The stereoscopic display device for the far vision distance consists of a 2D display panel, a first cylindrical lens grating, a scattering layer and a second cylindrical lens grating. The 2D display panel, the first cylindrical lens grating, the scattering layer and the second cylindrical lens grating are sequentially arranged front and back. The pixels on the 2D display panel are arranged according to a periodic unit. The period unit includes pixels from different parallax images. Each periodic unit may be demagnified imaged at the scattering layer by a first lenticular lens. The scattering layer can scatter the image of the periodic unit forward and project the image to a designated direction through the second lenticular lens to form a viewpoint. When the eyes are positioned at different viewpoint positions, the parallax images corresponding to the eyes can be seen, so that stereoscopic vision is realized.
Description
Technical Field
The present invention relates to display technology, and more particularly, to 3D stereoscopic display technology.
Background
The 3D display technology is a display technology that can realize real reproduction of stereoscopic scenes, which can respectively provide different parallax images for human eyes, thereby enabling a person to generate stereoscopic vision. It generally uses a slit grating, a lenticular lens, as a light-splitting element, to project pixels on a 2D display panel to a specified direction, thereby forming a viewpoint. When the eyes are positioned at different viewpoint positions, parallax images corresponding to the eyes can be seen, so that stereoscopic vision is realized. When the traditional stereoscopic display device is used for splitting light, the geometric relationship of the light rays from different parallax image pixels meets the principle of similar triangles when the light rays are projected to the corresponding viewpoint positions. Therefore, when the viewing distance is far, that is, the viewpoint position is far from the display, the pixel pitch on the 2D display panel should be reduced as much as possible due to the similar triangle principle described above. However, the distance between pixels is limited by the manufacturing process of the display, so the invention proposes a stereoscopic display device with far vision.
Disclosure of Invention
The invention provides a stereoscopic display device with far vision. Fig. 1 is a schematic structural diagram of the stereoscopic display device with far vision. The stereoscopic display device for the far vision distance consists of a 2D display panel, a first cylindrical lens grating, a scattering layer and a second cylindrical lens grating. The 2D display panel, the first cylindrical lens grating, the scattering layer and the second cylindrical lens grating are sequentially arranged front and back. The pixels on the 2D display panel are arranged according to a periodic unit. The period unit includes pixels from different parallax images. Each periodic unit may be demagnified imaged at the scattering layer by a first lenticular lens. The scattering layer can scatter the image of the periodic unit forward and project the image to a designated direction through the second lenticular lens to form a viewpoint. When the eyes are positioned at different viewpoint positions, the parallax images corresponding to the eyes can be seen, so that stereoscopic vision is realized.
The first cylindrical lens grating does not have imaging effect in the vertical direction and does not influence the propagation of light in the vertical direction, so the scattering layer is also a one-dimensional scattering layer and can only scatter light in the horizontal direction, and therefore, when the pixels on the 2D display panel pass through the first cylindrical lens grating, the scattering layer and the second cylindrical lens grating, the transmission of light in the vertical direction is not influenced and the direction is kept unchanged. Preferably the scattering layer may be made of lenticular gratings with a small pitch and focal length.
The focal length of the first cylindrical lens grating of the stereoscopic display device with far vision distance is set asfThe pixel pitch of the 2D display panel isp 1 The distance from the 2D display panel to the first cylindrical lens grating isl 1 The distance from the first cylindrical lens grating to the scattering layer isl 2 The distance from the scattering layer to the second cylindrical lens grating isl 3 The distance from the second cylindrical lens grating to the viewpoint isl 4 The viewpoint distance isp 2 . Preferably, the above parameters should satisfy:，/>，/>。
andIn (C) due to item->And->The distance from the second lens grating to the viewpoint can be increased, thereby maintaining the pixel pitch of the 2D display panelp 1 Viewpoint distancep 2 Distance from scattering layer to second cylindrical lens gratingl 3 And under the condition of unchanged, realizing the display of the stereoscopic image of the far vision distance.
Optionally, to reduce crosstalk, a light barrier may be added between the periodic units.
Alternatively, each periodic unit may form a plurality of images on the scattering layer through the first lenticular lens grating.
Alternatively, the first lenticular lens grating may be replaced with a slit grating.
Alternatively, the second lenticular grating may be replaced with a slit grating.
In the invention, the stereoscopic display device with far vision can reduce the imaging of the pixel period unit on the 2D display panel on the scattering layer by utilizing the first cylindrical lens grating, so that the imaging interval of the pixels is reduced, and the display can obtain the far vision under the condition of not changing other conditions. Compared with the traditional stereoscopic display device, the stereoscopic display device with the far vision distance is more suitable for occasions with far vision distances, such as squares, cinema and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic diagram of the optical path principle of the present invention.
Icon: 010-distance-of-sight stereoscopic display device; a 100-2D display panel; 200-a first cylindrical lens grating; 300-scattering layer; 400-second cylindrical lens grating; 020-schematic diagram of the optical path principle of a stereoscopic display device with far vision distance; 500-light barrier; 110-pixels belonging to parallax image 1; 120-pixels belonging to parallax image 2; 130-pixels belonging to parallax image 3; 140-pixels belonging to the parallax image 4; 150-pixels belonging to the parallax image 5; 160-pixels belonging to the parallax image 6; 610—viewpoint area of parallax image 1; 620—viewpoint area of parallax image 2; 630—view region of parallax image 3; 640-viewpoint area of parallax image 4; 650-viewpoint area of parallax image 5; 660—view area of parallax image 6.
It should be understood that the above-described figures are merely schematic and are not drawn to scale.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In describing embodiments of the present invention, it should be noted that the terms "first," "second," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Examples
Fig. 1 is a schematic diagram of a structure of a stereoscopic display device 010 with far vision distance according to the present embodiment, in which x-coordinate represents a horizontal direction in space, y-coordinate represents a vertical direction in space, and z-direction represents an axial direction perpendicular to an x-y plane. Referring to fig. 1, the present embodiment provides a stereoscopic display device 010 with far vision, which includes a 2D display panel 100, a first lenticular lens 200, a scattering layer 300 and a second lenticular lens 400.
The stereoscopic display device 010 for distance vision provided in the present embodiment will be further described below.
The 2D display panel 100, the first lenticular lens grating 200, the diffusion layer 300, and the second lenticular lens grating 400 are sequentially disposed one after the other. The pixels on the 2D display panel 100 are arranged in a periodic unit. The period unit includes pixels from different parallax images. Pixels 110 belonging to the parallax image 1 to pixels 160 belonging to the parallax image 6 are sequentially arranged in a periodic unit. Each periodic unit may be demagnified by the first lenticular lens 200 to image at the scattering layer 300. The scattering layer 300 may scatter the image of the periodic unit forward and project it to a designated direction via the second lenticular lens 400, forming a viewpoint. When the eyes are positioned at different viewpoint positions, the parallax images corresponding to the eyes can be seen, so that stereoscopic vision is realized.
Since the first lenticular lens grating 200 does not have an imaging effect in the vertical direction and does not affect the propagation of light in the vertical direction, the scattering layer 300 is a one-dimensional scattering layer and can only scatter light in the horizontal direction, so that the transmission of light in the vertical direction is not affected and the direction remains unchanged when the pixels on the 2D display panel 100 pass through the first lenticular lens grating 200, the scattering layer 300 and the second lenticular lens grating 400. The scattering layer 300 is made of lenticular gratings with small pitch and focal length.
Fig. 2 is a schematic view of the optical path of the stereoscopic display device 010 according to the invention, in which x-coordinate represents the horizontal direction in space, y-coordinate represents the vertical direction in space, and z-direction represents the axial direction perpendicular to the x-y plane. Referring to fig. 2, a pixel 110 belonging to a parallax image 1, a pixel 120 belonging to a parallax image 2, a pixel 130 belonging to a parallax image 3, a pixel 140 belonging to a parallax image 4, a pixel 150 belonging to a parallax image 5, and a pixel 160 belonging to a parallax image 6 are sequentially arranged in the x direction to form a period unit. The first lenticular lens 200 may image pixels belonging to the pixels 110 of the parallax image 1 to pixels belonging to the pixels 160 of the parallax image 6 to the scattering layer 300 position. In the imaging process, the distance from the 2D display panel to the first cylindrical lens grating is the object distance, the distance from the first cylindrical lens grating to the scattering layer is the image distance, and when the object distance is larger than the image distance according to the lens imaging rule, the imaging is the inverted reduced real image. The first lenticular lens 200 may demagnifie a periodic unit composed of pixels belonging to the pixels 110 of the parallax image 1 to pixels belonging to the pixels 160 of the parallax image 6 at the scattering layer 300. In the imaging, the arrangement order of the pixels is opposite to that of the pixels on the 2D display panel 100. The scattering layer may scatter the reduced image formed by the periodic unit forward and project it to a designated direction via the second lenticular lens 400 to form a viewpoint. Similarly, according to the lens imaging rule, during the projection of the second cylindrical lens grating 400, the pixel arrangement order is reversed again, and finally, a set of viewpoint areas sequentially arranged from the viewpoint area 610 of the parallax image 1 to the viewpoint area 660 of the parallax image 6 is formed on the optimal viewing distance. The arrangement order of the viewpoint areas of the respective parallax images coincides with the arrangement order of the pixels of the parallax images on the 2D display panel.
Set the focal length of the first lenticular lens grating 200 of the stereoscopic display device 010 with far vision distancef4.5455 mm,2D display panel 100 pixel pitchp 1 Distance from the 2d display panel 100 to the first lenticular lens 200 is 0.3 mml 1 50 mm, the distance from the first cylindrical lens grating 200 to the scattering layer 300l 2 5 mm, the distance from the scattering layer 300 to the second cylindrical lens grating 400l 3 10 mm, the second lenticular lens 400 is spaced from the viewpointl 4 22m, inter-viewpoint distancep 2 At 66m, the above parameters satisfy:，/>，/>。
andIn (1) due to->The distance from the second cylindrical lens grating to the viewpoint can be increased to 22m, and the stereoscopic image display of far vision distance can be realized.
Claims (5)
1. A stereoscopic display device for distance vision, characterized in that: the stereoscopic display device with the far vision distance consists of a 2D display panel, a first cylindrical lens grating, a scattering layer and a second cylindrical lens grating, wherein the 2D display panel, the first cylindrical lens grating, the scattering layer and the second cylindrical lens grating are sequentially placed front and back, pixels on the 2D display panel are arranged according to periodic units, the periodic units comprise pixels from different parallax images, each periodic unit can be contracted and imaged at the scattering layer through the first cylindrical lens grating, the scattering layer can scatter the images of the periodic units forwards and project the images to a designated direction through the second cylindrical lens grating to form a view point, and when human eyes are positioned at different view point positions, parallax images corresponding to the human eyes can be seen, so that stereoscopic vision is realized; the focal length of the first cylindrical lens grating of the stereoscopic display device with far vision distance is set asfThe pixel pitch of the 2D display panel isp 1 The distance from the 2D display panel to the first cylindrical lens grating isl 1 The distance from the first cylindrical lens grating to the scattering layer isl 2 The distance from the scattering layer to the second cylindrical lens grating isl 3 The distance from the second cylindrical lens grating to the viewpoint isl 4 Inter-view pointDistance isp 2 The above parameters should be satisfied:，/>，/>。
2. a distance-stereo display device according to claim 1, wherein: a light barrier can be additionally arranged between the periodic units.
3. A distance-stereo display device according to claim 1, wherein: each periodic unit may form a plurality of images on the scattering layer through the first lenticular lens grating.
4. A distance-stereo display device according to claim 1, wherein: the first lenticular lens grating may be replaced with a slit grating.
5. A distance-stereo display device according to claim 1, wherein: the second lenticular grating may be replaced with a slit grating.
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| CN109725430B (en) * | 2019-03-06 | 2023-04-07 | 成都工业学院 | Virtual focusing mixed imaging stereo display device |
| CN110012286B (en) * | 2019-05-07 | 2023-04-25 | 成都工业学院 | High-viewpoint-density human eye tracking stereoscopic display device |
| CN110174767B (en) * | 2019-05-13 | 2024-02-27 | 成都工业学院 | Super-multi-view near-to-eye display device |
| CN110286495B (en) * | 2019-07-08 | 2023-12-29 | 成都工业学院 | Retroreflective stereoscopic display device based on light source array |
| CN110286496B (en) * | 2019-07-22 | 2024-01-30 | 成都工业学院 | Stereoscopic display device based on front directional light source |
| CN110286516B (en) * | 2019-08-02 | 2024-02-20 | 成都工业学院 | Three-dimensional display device with variable slit pitch |
| CN110456549B (en) * | 2019-09-26 | 2024-02-13 | 成都工业学院 | Stereoscopic display device with adjustable optimal viewing distance |
| CN113050294B (en) * | 2021-04-09 | 2022-08-26 | 成都工业学院 | Low-crosstalk three-dimensional display device without color moire fringes |
| CN116338975B (en) * | 2023-05-30 | 2023-07-28 | 成都工业学院 | Stereoscopic display device based on display bar array |
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