CN109283691B - Optical path transformation-based light field reconstruction three-dimensional display method and system - Google Patents
Optical path transformation-based light field reconstruction three-dimensional display method and system Download PDFInfo
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- CN109283691B CN109283691B CN201811277958.XA CN201811277958A CN109283691B CN 109283691 B CN109283691 B CN 109283691B CN 201811277958 A CN201811277958 A CN 201811277958A CN 109283691 B CN109283691 B CN 109283691B
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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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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
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Abstract
The invention discloses a light field reconstruction three-dimensional display method and a light field reconstruction three-dimensional display system based on optical path conversion.A projector array in the traditional method and the traditional system is replaced by the combination of an image output device, a concave mirror array, a first aperture array and a second aperture array, a video image is obtained through an optical path, a virtual image is projected onto a concave arc directional scattering screen and a three-dimensional image is formed in a three-dimensional light field area, so that the visual effect of three-dimensional stereoscopic display is brought to a user, the system is light and energy-saving, the method and the system disclosed by the invention can ensure that the size of a visual angle range can be flexibly converted along with the swinging of a plane mirror by controlling the position and the focal length parameter of each component, the three-dimensional image reconstructed by the concave arc scattering screen can more highlight the depth of image display, and the system has a simple structure and.
Description
Technical Field
The invention belongs to the technical field of three-dimensional image display, and particularly relates to a light field reconstruction three-dimensional display method and system based on optical path transformation.
Background
With the increasing requirements of people on display modes and display equipment and the rising water demand of display modes such as stereoscopic display, the traditional multi-projection three-dimensional display system and method mainly rely on a projector array to output images, and then project the output images onto a directional scattering screen to obtain three-dimensional images.
However, as the number of projectors increases, the whole system becomes very large and consumes much energy. Meanwhile, the projection angle of view of the projector is fixed, so that the angle of view of an image projected to the scattering screen is small, and the change is not flexible. These problems will cause much inconvenience to the user's visual experience.
Disclosure of Invention
In view of the above deficiencies of the prior art, the present invention provides a method and a system for reconstructing a three-dimensional display based on an optical path transformation, which are used to solve all or one of the above technical problems.
In order to solve the technical problems, the invention adopts the technical scheme that:
a light field reconstruction three-dimensional display system based on optical path changes, comprising:
image output means for outputting a two-dimensional image;
the concave lens array is arranged on an output path of the image output device, refracts the two-dimensional image output by the image output device and forms an erect and enlarged virtual image on the other side;
the first aperture array is arranged on an output path of the concave lens array, receives a virtual image output by the concave lens array, and outputs the virtual image on the other side;
the plane mirror is arranged on an output path of the first aperture array, receives a virtual image output by the first aperture array, and forms a virtual image on the other side;
the second aperture array is arranged on the output path of the plane mirror, receives the virtual image output by the plane mirror, and outputs the virtual image on the other side;
the convex lens array is arranged on an output path of the second aperture array, refracts a virtual image output by the second aperture array, and forms an upright reduced virtual image on the other side;
the concave arc directional scattering screen is arranged on an output path of the convex lens array, directionally scatters a virtual image output by the convex lens array, and reconstructs a three-dimensional image in a three-dimensional light field area on the other side;
preferably, the plane mirror is provided with a rotation axis around which the plane mirror is rotatable.
Preferably, the image output device is an LED screen.
A light field reconstruction three-dimensional display method based on optical path transformation comprises the following steps:
A. the image output device outputs a two-dimensional image;
B. the concave lens array refracts the two-dimensional image output by the image output device and then forms an erect and enlarged virtual image on the other side;
C. the first aperture array receives a virtual image output by the concave lens array and outputs the virtual image to the plane mirror;
D. the plane mirror receives the virtual image output by the first aperture array, and the virtual image with the same size is formed on the other side;
E. the second aperture array receives the virtual image output by the plane mirror and transmits the virtual image to the convex lens array;
F. the convex lens array refracts the virtual image output by the second aperture array, and an upright reduced virtual image is formed on the other side;
G. the concave arc-shaped directional scattering screen carries out directional scattering on a virtual image output by the convex lens array, and a corresponding three-dimensional display image is reconstructed in the three-dimensional light field area on the other side.
Preferably, the flat mirror in step D is rotatable along its central axis.
Preferably, the image output device is an LED screen.
The invention has the beneficial effects that:
1. the method and the system disclosed by the invention replace a projector array in the traditional method and the traditional system by utilizing the combination of the image output device, the concave mirror array, the first aperture array and the second aperture array, obtain a video image through an optical path, project a virtual image onto the concave arc-shaped directional scattering screen and form a three-dimensional image in a three-dimensional light field area, bring the visual effect of three-dimensional display to a user, and enable the system to be light and energy-saving.
2. According to the method and the system disclosed by the invention, the size of the visual angle range can be flexibly converted along with the swinging of the plane mirror only by controlling the position and the focal length parameter of each component, the three-dimensional image reconstructed by the concave arc-shaped scattering screen can highlight the image display depth, and the system is simple in structure and convenient to adjust.
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The contents of the drawings and the reference numerals in the drawings are briefly described as follows:
FIG. 1 is a structural diagram of a light field reconstruction three-dimensional display system based on optical path transformation according to an embodiment of the present invention.
Detailed Description
The following embodiments are provided to describe the embodiments of the present invention, and to further describe the detailed description of the embodiments of the present invention, such as the shapes, configurations, mutual positions and connection relationships of the components, the functions and operation principles of the components, the manufacturing processes and operation methods, etc., so as to help those skilled in the art to more fully, accurately and deeply understand the inventive concept and technical solutions of the present invention.
A light field reconstruction three-dimensional display method based on optical path transformation comprises the following steps:
A. the image output device outputs a two-dimensional image;
B. the concave lens array refracts the two-dimensional image output by the image output device and then forms an erect and enlarged virtual image on the other side;
C. the first aperture array receives a virtual image output by the concave lens array and outputs the virtual image to the plane mirror;
D. the plane mirror receives the virtual image output by the first aperture array, and the virtual image with the same size is formed on the other side;
E. the second aperture array receives the virtual image output by the plane mirror and transmits the virtual image to the convex lens array;
F. the convex lens array refracts the virtual image output by the second aperture array, and an upright reduced virtual image is formed on the other side;
G. the concave arc-shaped directional scattering screen carries out directional scattering on a virtual image output by the convex lens array, and a corresponding three-dimensional display image is reconstructed in the three-dimensional light field area on the other side.
Optionally, the plane mirror in step D can rotate along its central axis.
Optionally, the image output device is an LED screen.
An optical path transformation-based light field reconstruction three-dimensional display system is sequentially provided with an image output device, a concave lens array 2, a first aperture array 3, a plane mirror 4, a second aperture array 5, a convex lens array 6 and a concave arc-shaped directional scattering screen 7 from left to right.
Alternatively, the flat mirror 4 is provided with a rotation axis around which the flat mirror 4 is rotatable.
Alternatively, the image output device may be the LED screen 1.
Two-dimensional image that LED screen 1 output forms just enlarged virtual image at the opposite side through concave lens array to transmit this virtual image to rotatable level crossing 4 through corresponding first aperture array 3, later, become the virtual image of equidimension through level crossing 4, and can change the angle of image transmission through the angle of adjustment level crossing, enlarge visual angle range, the virtual image transmits to corresponding convex lens array 6 through corresponding second aperture array 5, become just the virtual image that reduces at convex lens array 6's opposite side. Finally, virtual images formed by a plurality of convex lenses in the convex lens array are projected to the concave arc directional scattering screen 7, so that corresponding three-dimensional display images are reconstructed in the three-dimensional light field area 8 on the other side of the concave arc directional scattering screen, and a 3D display video image effect is brought to a user.
The invention has been described in an illustrative manner, and it is to be understood that the invention is not limited to the precise form disclosed, and that various insubstantial modifications of the inventive concepts and solutions, or their direct application to other applications without such modifications, are intended to be covered by the scope of the invention. The protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (6)
1. A light field reconstruction three-dimensional display system based on optical path changes, comprising:
image output means for outputting a two-dimensional image;
the concave lens array is arranged on an output path of the image output device, refracts the two-dimensional image output by the image output device and forms an erect and enlarged virtual image on the other side;
the first aperture array is arranged on an output path of the concave lens array, receives a virtual image output by the concave lens array, and outputs the virtual image on the other side;
the plane mirror is arranged on an output path of the first aperture array, receives a virtual image output by the first aperture array, and forms a virtual image on the other side;
the second aperture array is arranged on an output path of the plane mirror, receives a virtual image output by the plane mirror, and outputs the virtual image on the other side;
the convex lens array is arranged on an output path of the second aperture array, refracts a virtual image output by the second aperture array, and forms an upright reduced virtual image on the other side;
the concave arc-shaped directional scattering screen is arranged on an output path of the convex lens array, directionally scatters a virtual image output by the convex lens array, and reconstructs a three-dimensional image in a three-dimensional light field area on the other side;
two-dimensional image that image output device output forms upright enlarged virtual image at the opposite side through concave lens array, and transmit this virtual image to rotatable level crossing through corresponding first aperture array, afterwards, become the virtual image of equidimension through the level crossing, and can change the angle of image transmission through the angle of adjusting the level crossing, enlarge visual angle scope, the virtual image transmits to corresponding convex lens array through corresponding second aperture array, become upright reduced virtual image at convex lens array 6's opposite side, finally, the virtual image that a plurality of convex lens formed in the convex lens array is thrown to concave surface arc directional scattering screen, make the three-dimensional image of the three-dimensional light field region of its opposite side in the reconstruction of corresponding three-dimensional display, bring the video image effect of 3D demonstration for the user.
2. The optical path change based light field reconstruction three-dimensional display system as claimed in claim 1, wherein: the plane mirror is provided with a rotating shaft, and the plane mirror can rotate around the rotating shaft.
3. The optical path change based light field reconstruction three-dimensional display system as claimed in claim 1, wherein: the image output device is an LED screen.
4. A light field reconstruction three-dimensional display method based on optical path transformation is characterized by comprising the following steps:
A. the image output device outputs a two-dimensional image;
B. the concave lens array refracts the two-dimensional image output by the image output device and then forms an erect and enlarged virtual image on the other side;
C. the first aperture array receives a virtual image output by the concave lens array and outputs the virtual image to the plane mirror;
D. the plane mirror receives the virtual image output by the first aperture array, and the virtual image with the same size is formed on the other side;
E. the second aperture array receives the virtual image output by the plane mirror and transmits the virtual image to the convex lens array;
F. the convex lens array refracts the virtual image output by the second aperture array, and an upright reduced virtual image is formed on the other side;
G. the concave arc-shaped directional scattering screen carries out directional scattering on a virtual image output by the convex lens array, and a corresponding three-dimensional display image is reconstructed in the three-dimensional light field area on the other side.
5. The optical path transformation-based light field reconstruction three-dimensional display method according to claim 4, wherein: the plane mirror in the step D can rotate along the central axis thereof.
6. The optical path transformation-based light field reconstruction three-dimensional display method according to claim 4, wherein: the image output device is an LED screen.
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| CN201811277958.XA CN109283691B (en) | 2018-10-30 | 2018-10-30 | Optical path transformation-based light field reconstruction three-dimensional display method and system |
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| CN1225668C (en) * | 2003-12-08 | 2005-11-02 | 中国科学技术大学 | Digital two dimensional color schlieren light source and flow field display method |
| EP1699246A3 (en) * | 2005-03-03 | 2008-08-20 | Samsung Electronics Co., Ltd. | Display |
| CN106154567B (en) * | 2016-07-18 | 2018-12-04 | 北京邮电大学 | A kind of imaging method and device of 3 d light fields display system |
| CN106249331B (en) * | 2016-10-25 | 2018-10-09 | 宁波维真显示科技股份有限公司 | Switchable combination optical grating construction |
| CN108761817A (en) * | 2018-08-16 | 2018-11-06 | 深圳市眸合科技有限公司 | A kind of bore hole 3D optical films |
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