CN110908133A - Integrated imaging 3D display device based on dihedral corner reflector array - Google Patents
Integrated imaging 3D display device based on dihedral corner reflector array Download PDFInfo
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- CN110908133A CN110908133A CN201911140156.9A CN201911140156A CN110908133A CN 110908133 A CN110908133 A CN 110908133A CN 201911140156 A CN201911140156 A CN 201911140156A CN 110908133 A CN110908133 A CN 110908133A
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Abstract
The invention provides an integrated imaging 3D display device based on a dihedral angle reflector array, which consists of a 2D display screen, a lens array and the dihedral angle reflector array. The 2D display screen is used for displaying the integrated imaging micro-image array. The lens array is used for modulating light rays emitted by pixels on the 2D display screen and reconstructing a depth-reversed 3D image. The dihedral corner reflector array is arranged above the 2D display screen and the lens array and used for converging the reconstructed 3D image with the depth inversion into a 3D image without the depth inversion in the air.
Description
One, the technical field
The invention relates to the technical field of 3D display, in particular to an integrated imaging 3D display device based on a dihedral angle reflector array.
Second, background Art
The traditional integrated imaging technology acquires direction and space information of an original 3D scene by means of a lens array, records the information in the form of a micro-image array, and reconstructs a 3D image by using the lens array with the same parameters. The optical path symmetry of the integrated imaging acquisition and display process causes the depth inversion problem of the reconstructed 3D image, i.e. the 3D image is an artifact which is exactly the inverse of the depth of the original 3D scene.
At present, most of mainstream depth inversion elimination methods adopt a rendering algorithm based on a viewpoint, a camera array is built to simulate a viewing viewpoint of human eyes to acquire 3D information, and a generated micro image array can reconstruct a 3D image with correct depth. However, with the rapid increase of the number of viewing viewpoints, the rendering cost is high, and it is difficult to generate a micro-image array in real time, which affects the 3D display performance. Besides a rendering algorithm based on a viewpoint, the depth reversal problem can be solved by adopting a negative refractive index lens array, but the problems of high processing difficulty and the like of the negative refractive index lens array exist.
The dihedral angle reflector array is one new type of imaging optical element comprising regularly arranged square mirror holes with inner wall of the mirror hole being metal plane reflector. The image after being imaged by the dihedral angle reflector array is mirror-symmetrical with the image source about the dihedral angle reflector array, and is mainly used for realizing 2D suspension display.
Third, the invention
The invention provides an integrated imaging 3D display device based on a dihedral corner reflector array. The device utilizes the secondary reflection function of the dihedral angle reflector array to realize 3D image display without depth inversion. The integrated imaging 3D display device based on the dihedral corner reflector array comprises a 2D display screen, a lens array and the dihedral corner reflector array, as shown in figure 1.
The 2D display screen is used for displaying the integrated imaging micro-image array.
The lens array is arranged right in front of the 2D display screen, is parallel to the plane where the 2D display screen is located, and is used for modulating light rays emitted by pixels on the 2D display screen and reconstructing a depth-reversed 3D image at a certain distance in front.
The dihedral corner reflector array is arranged above the 2D display screen and the lens array and used for converging the reconstructed 3D image with the depth inversion into a 3D image without the depth inversion in the air. As shown in fig. 2, a part of incident light emitted from the reconstructed 3D image surface with depth inversion is reflected twice by the dihedral corner mirror array, the horizontal component of the emergent light is opposite to the horizontal component of the incident light, the vertical component of the emergent light is the same as the vertical component of the incident light, and the emergent light can directly enter the pupil of the viewer. The non-depth-inverted 3D image and the reconstructed 3D image with depth inversion are symmetric about the dihedral mirror array. The 3D image without depth inversion seen by the viewer is exactly the same as the original 3D scene.
The invention provides an integrated imaging 3D display device based on a dihedral corner reflector array, which can realize naked-eye 3D display without depth inversion by utilizing integrated imaging 3D display and the dihedral corner reflector array.
Description of the drawings
Fig. 1 is a structural diagram of an integrated imaging 3D display device based on a dihedral corner reflector array according to the present invention.
FIG. 2 is a schematic diagram of the imaging principle of the dihedral mirror array of the present invention.
Fig. 3 is a comparison of disparity maps of 3D images according to an embodiment of the present invention.
The figures of the drawings are numbered:
12D display screen, 2 lens array, 3 reconstructed 3D image with depth inversion, 4 incident rays, 5 dihedral mirror array, 6 emergent rays, 7 3D image without depth inversion, 8 viewer.
It should be understood that the above-described figures are merely schematic and are not drawn to scale.
Fifth, detailed description of the invention
The present invention will be described in further detail below with reference to a detailed description of an exemplary embodiment of an integrated imaging 3D display device based on a dihedral mirror array according to the present invention. It should be noted that the following examples are only for illustrative purposes and should not be construed as limiting the scope of the present invention, and that the skilled person in the art may make modifications and adaptations of the present invention without departing from the scope of the present invention.
The invention provides an integrated imaging 3D display device based on a dihedral corner reflector array. The device utilizes the secondary reflection function of the dihedral angle reflector array to realize 3D image display without depth inversion. The integrated imaging 3D display device based on the dihedral corner reflector array comprises a 2D display screen, a lens array and the dihedral corner reflector array, as shown in the attached figure 1.
The 2D display screen is used for displaying the integrated imaging micro-image array, and preferably, the 2D display screen is a liquid crystal screen, an OLED (organic light emitting diode) and a projection screen. In one embodiment, a liquid crystal display screen is selected, the resolution is 3840 × 2160, and the size is 5.8 inches.
The lens array is arranged right in front of the 2D display screen, is parallel to the plane where the 2D display screen is located, and is used for modulating light rays emitted by pixels on the 2D display screen and reconstructing a rotated 3D image at a certain distance in front. In one embodiment, the lens element pitch is 10mm, the focal length is 15mm, and the lens array is 18mm to the 2D display screen.
The dihedral corner reflector array is used for converging the reconstructed 3D image with the depth inversion into a 3D image without the depth inversion in the air. As shown in fig. 2, a part of incident light emitted from the reconstructed 3D image surface with depth inversion is reflected twice by the dihedral corner mirror array, the horizontal component of the emergent light is opposite to the horizontal component of the incident light, the vertical component of the emergent light is the same as the vertical component of the incident light, and the emergent light can directly enter the pupil of the viewer. The non-depth-inverted 3D image and the reconstructed 3D image with depth inversion are symmetric about the dihedral mirror array. The 3D image without depth inversion seen by the viewer is exactly the same as the original 3D scene.
In one embodiment, the dihedral mirror array based integrated imaging 3D display flow is divided into three steps. The first step is to acquire 3D information of an original 3D scene, the original 3D scene being: the letter "Q" is located before the letter "B", with "Q" at the lower right side and "B" at the upper left side; secondly, synthesizing the micro-image array and reconstructing a 3D image with depth inversion, wherein the letter Q is changed to be positioned behind the letter B; and thirdly, placing a dihedral angle reflector array above the 2D display screen and the lens array, imaging a 3D image without depth inversion, and changing the letter Q back to the letter B, so that the 3D information seen by a viewer is consistent with the original 3D scene. The disparity map of the 3D scene corresponding to each step is shown in fig. 3.
Claims (1)
1. An integrated imaging 3D display device based on a dihedral corner reflector array comprises a 2D display screen, a lens array and the dihedral corner reflector array, wherein the 2D display screen is used for displaying an integrated imaging micro-image array; the lens array is arranged right in front of the 2D display screen, is parallel to the plane of the 2D display screen, and is used for modulating light rays emitted by pixels on the 2D display screen and reconstructing a depth-reversed 3D image at a certain distance in front; the dihedral corner reflector array is arranged above the 2D display screen and the lens array and used for converging the reconstructed 3D image with the depth inversion into a 3D image without the depth inversion in the air, and is characterized in that part of incident light rays emitted from the surface of the 3D image with the depth inversion are reflected twice by the dihedral corner reflector array, the horizontal direction component of emergent light rays is opposite to the horizontal component of the incident light rays, the vertical direction component of the emergent light rays is the same as the vertical component of the incident light rays, the emergent light rays can directly enter pupils of a viewer, the formed 3D image without the depth inversion and the 3D image with the depth inversion are in mirror symmetry with respect to the dihedral corner reflector array, and the 3D image without the depth inversion seen by the viewer is completely the same as an original 3D scene.
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| CN201911140156.9A CN110908133A (en) | 2019-11-20 | 2019-11-20 | Integrated imaging 3D display device based on dihedral corner reflector array |
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| CN201911140156.9A CN110908133A (en) | 2019-11-20 | 2019-11-20 | Integrated imaging 3D display device based on dihedral corner reflector array |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111240034A (en) * | 2020-03-25 | 2020-06-05 | 北京航空航天大学 | 3D display device |
| CN114002861A (en) * | 2021-10-14 | 2022-02-01 | 北京航空航天大学 | Integrated imaging 3D display device with enhanced depth |
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| CN101405627A (en) * | 2006-03-23 | 2009-04-08 | 独立行政法人情报通信研究机构 | Imageing element and display |
| CN102460269A (en) * | 2009-05-11 | 2012-05-16 | 独立行政法人情报通信研究机构 | Display device |
| CN106773087A (en) * | 2017-01-09 | 2017-05-31 | 中国科学技术大学 | A kind of floating integration imaging 3 d display device |
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| CN101405627A (en) * | 2006-03-23 | 2009-04-08 | 独立行政法人情报通信研究机构 | Imageing element and display |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111240034A (en) * | 2020-03-25 | 2020-06-05 | 北京航空航天大学 | 3D display device |
| CN111240034B (en) * | 2020-03-25 | 2021-06-15 | 北京航空航天大学 | 3D display device |
| CN114002861A (en) * | 2021-10-14 | 2022-02-01 | 北京航空航天大学 | Integrated imaging 3D display device with enhanced depth |
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Application publication date: 20200324 |