Color holographic display system and method based on controlling diffraction distance
A holographic display and display method technology, applied in the field of electronics, can solve the problems of increasing computational complexity, loss of original information, and reducing the total number of pixels in a hologram, achieving flexible and convenient loading methods, overcoming digital processing and frequency domain filtering, Overcome the effects of too many optics
Inactive Publication Date: 2016-01-13
XIDIAN UNIV
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The disadvantage of this method is that complex sampling rate calculations need to be performed before the hologram is generated, which increases the computational complexity. In addition, differential sampling will also reduce the total number of pixels contained in the hologram, resulting in the loss of part of the original information.
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[0035] The present invention will be further described below in conjunction with the drawings.
[0036] Reference attached figure 1 , To further describe the system of the present invention.
[0037] The system of the present invention includes a coherent light source array, a beam expanding collimation array, a control unit, a spatial light modulator array, a diffraction distance control unit, and an achromatic lens. The coherent light source array is used to provide three monochromatic coherent linearly polarized laser light sources of red, green and blue incident to the spatial light modulator array; the expanded beam collimating array is used to combine the three monochromatic coherent linearly polarized lasers of red, green and blue The Gaussian beam emitted by the light source is expanded and collimated into a plane light wave; the control unit is used to calculate and generate red, green and blue monochromatic computed holograms, and control the output of the red, green and ...
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The invention discloses a color holographic display system based on diffraction distance control and a method of the color holographic display system based on the diffraction distance control. The problem that color crosstalk exists in existing color holographic display is mainly solved. The system comprises a coherent light source array, an expanded beam collimating array, a control unit, a space light modulator array, a diffraction distance control unit and an achromatic lens. The implementation steps of the method comprise the first step of generating monochrome computing holograms, the second step of loading the holograms, the third step of reproducing the holograms and the fourth step of generating a color reproduction image. An optimal Fresnel diffraction distance obtained under different wave lengths in a calculating mode is utilized to generate the three monochrome computing holograms, and Fresnel diffraction with an optimal diffraction distance is respectively carried out on the three monochrome computing holograms. The color holographic display system and the method have the advantages that the hologram loading mode is flexible, light paths are simple and convenient to adjust, and the effect of eliminating the color crosstalk is good.
Description
Technical field [0001] The present invention belongs to the field of electronic technology, and further relates to a color holographic display system and method based on controlling the diffraction distance in the field of photoelectric display technology. The invention can be used to reproduce the color computed hologram, eliminate the color crosstalk in the reproduced image of the computed hologram and improve the imaging quality. Background technique [0002] Computer Generated Hologram (ComputerGenerated Hologram) is a new type of holographic imaging and display technology, and its principle is similar to traditional optical hologram. CGH calculates and simulates the diffraction and interference process of the light wave field, replaces the traditional holographic recording material with a light modulation device, simulates the complex amplitude of the diffracted light on a certain plane of the light wave transmission path, and finally obtains the original light wave field re...
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IPC IPC(8): G03H1/22G02B27/28
Inventor王晓蕊郭苗苗杨琛黄曦刘德连张建奇刘鑫
OwnerXIDIAN UNIV