CN109725430B - Virtual focusing mixed imaging stereo display device - Google Patents
Virtual focusing mixed imaging stereo display device Download PDFInfo
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- CN109725430B CN109725430B CN201910166505.8A CN201910166505A CN109725430B CN 109725430 B CN109725430 B CN 109725430B CN 201910166505 A CN201910166505 A CN 201910166505A CN 109725430 B CN109725430 B CN 109725430B
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Abstract
The invention provides a virtual convergence hybrid imaging three-dimensional display device. The virtual convergence hybrid imaging three-dimensional display device consists of a 2D display panel and a cylindrical lens grating. The lenticular lens is divided into a first lenticular lens sequence and a second lenticular lens sequence, which have different focal lengths and are alternately disposed. The first cylindrical lens sequence can enable pixels on the 2D display panel to form upright virtual images, and the formed virtual images are located behind the cylindrical lens grating plane; the second cylindrical lens sequence can focus the pixels to form parallel beams, and the pixels observed by human eyes are located on a cylindrical lens grating plane. Therefore, the invention can provide multi-depth stereo images to reduce the visual fatigue caused by the long-time fixation and focusing of human eyes on the plane of the cylindrical lens grating in the traditional stereo display. When human eyes are at different horizontal positions, corresponding parallax images can be seen, and therefore stereoscopic vision is achieved.
Description
Technical Field
The present invention relates to a display technology, and more particularly, to a 3D stereoscopic display technology.
Background
The 3D display technology is a display technology that can realize real reproduction of a stereoscopic scene, and can provide different parallax images to human eyes, respectively, thereby enabling a person to generate stereoscopic vision. The projection system uses slit grating and cylindrical lens as light splitting elements to project pixels on a 2D display panel to a specified direction, thereby forming a view point. When the human eyes are at different viewpoint positions, the parallax images corresponding thereto can be seen, thereby realizing stereoscopic vision. Generally, when a conventional lenticular-based stereoscopic display device is set, a 2D display panel needs to be placed at a focal length position of a lenticular lens. However, the stereoscopic image formed by such a structure is usually displayed at a cylindrical lens plane position, and when the displayed object is located behind the cylindrical lens plane, the human eyes cannot correctly zoom, and thus the occurrence of visual fatigue is easily caused.
Disclosure of Invention
The invention provides a virtual convergence hybrid imaging three-dimensional display device. Fig. 1 is a schematic structural diagram of the stereoscopic display device for virtual convergence hybrid imaging. The virtual convergence hybrid imaging three-dimensional display device consists of a 2D display panel and a cylindrical lens grating. The 2D display panel and the cylindrical lenticulation are sequentially arranged in front and at the back. The cylindrical lens grating is divided into a first cylindrical lens sequence and a second cylindrical lens sequence. And the pixels on the 2D display panel are correspondingly arranged according to the positions of the first cylindrical lens sequence and the second cylindrical lens sequence. The 2D display panel is provided with pixels with lower aperture opening ratios at positions corresponding to the first cylindrical lens sequences and is arranged in a ladder shape. The 2D display panel has pixels with a high aperture ratio at positions corresponding to the second lenticular sequence. In one period, pixels from different parallax images are distributed at different horizontal positions on the 2D display panel. The cylindrical lenses in the first cylindrical lens sequence and the cylindrical lenses in the second cylindrical lens sequence have different focal lengths and are alternately arranged. The distance from the 2D display panel to the cylindrical lenticular lens is smaller than the focal length of the first cylindrical lens sequence. The distance from the 2D display panel to the cylindrical lens grating is equal to the focal length of the second cylindrical lens sequence. The first and second cylindrical lens sequences may project pixels corresponding to positions thereof in different spatial directions and form a viewpoint. When the human eyes are at the corresponding viewpoint positions, the parallax images corresponding thereto can be seen, thereby generating stereoscopic vision.
On the 2D display panel, with the pixel that first post lens sequence position corresponds can form through the first post lens sequence that corresponds with it and just found the virtual image, forms virtual imaging mode, and the image distance that its formation of image is far away from the object distance, and then the pixel that people's eye watched should be in the planar rear of post lens grating.
On the 2D display panel, the light rays emitted by the pixels corresponding to the positions of the second cylindrical lens sequences can be focused by the corresponding second cylindrical lens sequences to form parallel light beams, so that a focusing imaging mode is formed, and the pixels are directionally projected. Any viewed pixel should be at the lenticular plane position at this time.
Optionally, when the requirement on crosstalk suppression capability is not high, the focal length of the second lenticular sequence may not be equal to the distance from the 2D display panel to the lenticular lens.
Alternatively, the second cylindrical lens sequence may be replaced by a slit grating sequence.
Optionally, an additional cylindrical lens sequence which is arranged alternately with the first cylindrical lens sequence and the second cylindrical lens sequence but has a different focal length may be set with reference to the principle of the first cylindrical lens sequence to image part of the pixels at other positions behind the grating plane of the cylindrical lenses but with different depth positions.
In the invention, because the first cylindrical lens sequence can display the corresponding pixel at the back of the cylindrical lens grating plane, and the second cylindrical lens sequence can display the corresponding pixel at the position of the cylindrical lens grating plane, the virtual convergence hybrid imaging stereo display device can provide multi-depth stereo images so as to reduce visual fatigue caused by long-time fixed focusing of human eyes on the cylindrical lens grating plane in the traditional stereo display.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a layout diagram of pixels on a 2D display panel according to the present invention.
Fig. 3 is a schematic diagram of the optical path of the first cylindrical lens array of the present invention.
Fig. 4 is a schematic diagram of the optical path of the second cylindrical lens sequence of the present invention.
Icon: 010-a stereoscopic display device for virtually polymerized hybrid imaging; a 100-2D display panel; 200-cylindrical lenticulation; 210-a first cylindrical lens sequence; 220-second cylindrical lens sequence; 020-pixel arrangement on a 2D display panel; a pixel region corresponding to the first cylindrical lens sequence on the 110-2D display panel; a pixel region corresponding to the second cylindrical lens sequence on the 120-2D display panel; 111-pixels corresponding to a first lenticular sequence; 121-pixels corresponding to a second column lens sequence; 030-first cylindrical lens series imaging optical path; 1101-virtual image; 040-second cylindrical lens sequence imaging optical path.
It should be understood that the above-described figures are merely schematic and are not drawn to scale.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of 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 present invention, 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the terms "first", "second", and the like are used for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Examples
Fig. 1 is a schematic structural diagram of a stereoscopic display device 010 for virtual convergence hybrid imaging according to this embodiment. In the figure, the x-coordinate represents the horizontal direction in space and the y-coordinate represents the vertical direction in space. Referring to fig. 1, the present embodiment provides a virtual convergence hybrid imaging stereoscopic display device 010, which includes a 2D display panel 100 and a lenticular lens 200. The lenticular sheet 200 is divided into a first lenticular series 210 and a second lenticular series 220.
The following further describes the stereoscopic display device 010 for virtual-aggregate hybrid imaging provided in this embodiment.
The 2D display panel 100 and the lenticular lens 200 are sequentially disposed in front of and behind each other. The cylindrical lenses in the first cylindrical lens sequence 210 and the cylindrical lenses in the second cylindrical lens sequence 220 have different focal lengths and are alternately arranged. The pixels on the 2D display panel 100 are arranged correspondingly according to the positions of the first cylindrical lens sequence 210 and the second cylindrical lens sequence 220. In one period, pixels from different parallax images are distributed at different horizontal positions on the 2D display panel 100.
As shown in fig. 2, a pixel arrangement 020 on the 2D display panel is shown. In a pixel region 110 corresponding to the first lenticular lens sequence on the 2D display panel, pixels 111 corresponding to the first lenticular lens sequence have a lower aperture ratio. The pixels 1a, 1b, 1c, 2a, 2b, and 2c form an arrangement period, which is arranged in a stepwise fashion. Pixels 1a, 1b, and 1c are from the parallax image 1, and pixels 2a, 2b, and 2c are from the parallax image 2. In the pixel region 120 corresponding to the second column lens sequence on the 2D display panel, the pixels 121 corresponding to the second column lens sequence have a higher aperture ratio. Pixel 1 is from the parallax image 1 and pixel 2 is from the parallax image 2.
As shown in FIG. 3, which is a first cylindrical lens series imaging optical path 030, the x coordinate represents the horizontal direction in space, and the z direction represents the axial direction perpendicular to the x-y plane. The distance from the 2D display panel 100 to the lenticular lens grating 200 is smaller than the focal length of the first lenticular lens sequence 210. According to the principle of lenticular imaging, pixels in the pixel region 110 corresponding to the first lenticular sequence on the 2D display panel will be in an erect virtual image 1101 via the lenticular sequence 210. At this point a virtual imaging mode is formed. And since the image distance of the virtual image 1101 is much larger than the object distance, the virtual image 1101 should be behind the lenticular plane. When the human eye is at different horizontal positions, different parts of the virtual image 1101 can be seen through the first cylindrical lens sequence 210, when the human eye sees the pixels 1a, 1b and 1c, the parallax image 1 is seen, and when the human eye sees the pixels 2a, 2b and 2c, the parallax image 2 is seen.
As shown in fig. 4, the second column lens sequence imaging optical path 040 is illustrated in which the x-coordinate represents the horizontal direction in space and the z-direction represents the axial direction perpendicular to the x-y plane. The distance from the 2D display panel 100 to the lenticular lens 200 is equal to the focal length of the second lenticular lens sequence 220. According to the lens imaging principle, the light emitted by the pixel 121 corresponding to the second cylinder lens sequence can be focused by the corresponding second cylinder lens sequence 220 to form a parallel light beam. At this time, a focusing imaging mode is formed, and the second column lens sequence 220 may directionally project the pixels 121 corresponding to the second column lens sequence. When the human eye is at a different horizontal position, a different pixel 1 or pixel 2 can be seen via the second cylindrical lens sequence 220. Any viewed pixel should be at the lenticular plane position at this time.
In the present invention, the first lenticular lens sequence 210 can display the pixels 111 corresponding to the first lenticular lens sequence on the rear side of the plane of the lenticular lens barrier 200, and the second lenticular lens sequence 220 can display the pixels 121 corresponding to the second lenticular lens sequence on the plane of the lenticular lens barrier 200, so that the virtual-convergence hybrid imaging stereoscopic display device 010 of the present invention can provide a multi-depth stereoscopic image, so as to reduce the visual fatigue caused by the long-term fixed focusing of human eyes on the plane of the lenticular lens barrier in the conventional stereoscopic display.
Claims (4)
1. A stereoscopic display device for virtual convergence hybrid imaging, comprising: the stereoscopic display device for virtually converging and mixing imaging is composed of a 2D display panel and a cylindrical lens grating, wherein the 2D display panel and the cylindrical lens grating are sequentially placed in front of and behind, the cylindrical lens grating is divided into a first cylindrical lens sequence and a second cylindrical lens sequence, pixels on the 2D display panel are correspondingly arranged according to the positions of the first cylindrical lens sequence and the second cylindrical lens sequence, the 2D display panel has pixels with lower opening ratios at the positions corresponding to the first cylindrical lens sequence and is arranged in a step shape, the 2D display panel has pixels with higher opening ratios at the positions corresponding to the second cylindrical lens sequence, cylindrical lenses in the first cylindrical lens sequence and cylindrical lenses in the second cylindrical lens sequence have different focal lengths and are alternately placed, the distance from the 2D display panel to the cylindrical lens grating is smaller than that of the first cylindrical lens sequence, the pixels corresponding to the first cylindrical lens sequence can form an erect image through a first cylindrical lens sequence corresponding to the first cylindrical lens sequence, the distance from the cylindrical lens sequence to the cylindrical lens grating is equal to that of the first cylindrical lens sequence, the parallax images can be formed through parallax images generated by the first cylindrical lens sequence and the parallax images generated by the second cylindrical lens sequence, and the parallax images can be formed in the parallax images after the parallax images are formed by the first cylindrical lens sequence and the second cylindrical lens sequence, and the parallax images are parallel to the parallax images, and the parallax images formed by the first cylindrical lens sequence.
2. A stereoscopic display apparatus for virtual convergent hybrid imaging as claimed in claim 1, characterized in that: when the requirement on crosstalk inhibition capacity is not high, the focal length of the second cylindrical lens sequence is not equal to the distance from the 2D display panel to the cylindrical lens grating.
3. A stereoscopic display apparatus for virtual-poly hybrid imaging as in claim 1, wherein: the second cylindrical lens sequence may be replaced by a slit grating sequence.
4. A stereoscopic display apparatus for virtual convergent hybrid imaging as claimed in claim 1, characterized in that: according to the principle of a first cylindrical lens sequence, additional cylindrical lens sequences which are alternately arranged with the first cylindrical lens sequence and the second cylindrical lens sequence and have different focal lengths are arranged to image partial pixels at other positions behind the grating plane of the cylindrical lenses and have different depth positions.
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| CN110989192B (en) * | 2020-01-11 | 2023-10-24 | 成都工业学院 | Display device with axial changeable image display |
| CN116047788B (en) * | 2023-03-31 | 2023-09-29 | 成都工业学院 | Super-resolution stereoscopic display device |
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