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Preparation method of holographic polymer dispersion liquid crystal varied line-space grating

A technology of variable pitch grating and dispersed liquid crystal, applied in the directions of diffraction grating, optics, optical components, etc., can solve the problem of very high requirements, and achieve the effect of good beam splitting effect, small error and convenient viewing.

Inactive Publication Date: 2016-09-07
UNIV OF SHANGHAI FOR SCI & TECH +1
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Problems solved by technology

However, the former has a series of problems such as power, heat dissipation and cost, while the latter has very high requirements on process and equipment.

Method used

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  • Preparation method of holographic polymer dispersion liquid crystal varied line-space grating
  • Preparation method of holographic polymer dispersion liquid crystal varied line-space grating
  • Preparation method of holographic polymer dispersion liquid crystal varied line-space grating

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Embodiment Construction

[0019] The present invention utilizes grating to obtain interference phenomenon to realize stereo display. Described by the formula, when the diffraction angle θ satisfies the relationship dsinθ=mλ, the phenomenon of interference enhancement occurs, where d is the slit spacing, also known as the grating constant. θ is the angle of light diffraction. m is an integer, which is the spectral progression, and its value is 0, ±1, ±2,.... λ is the wavelength of the incident light. When d is constant, the absolute value of the diffraction angle θ cannot be greater than 90°, and the absolute value of sinθ cannot be greater than 1, which limits the value of m, so there is a maximum value, and this equation is a grating equation. (from the above equation can be transformed into) In order to calculate the grating period equation, Λ is the grating period, when we know the diffraction angle θ, we can calculate the grating period. Provide theoretical calculations for the preparation of ...

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Abstract

The invention relates to a preparation method of a holographic polymer dispersion liquid crystal varied line-space grating. According to the preparation method, a varied line-space grating exposure optical path is constructed, a beam splitting prism is adopted to carry out beam splitting in the left and in the right, and therefore, a varied line-space grating with a left and right eye stereo beam splitting function can be obtained. An optical path diagram in grating exposure is intuitive, and a stereo beam splitting function can be realized conveniently; based on the principle of the varied line-space grating, light on a display can be all emitted with different diffraction angles; and based on the left and right eye stereo beam splitting function, stereo display image splitting in different ranges can be realized, and a user can see a stereo display effect as long as the eyes of the user are in the diffraction range of the varied line-space grating; a polymer dispersion liquid crystal material can respond to the eye time of the user; circuit control can be carries out; and under an electric control condition, a display mode can be quickly converted into a 2D or 3D mode.

Description

technical field [0001] The invention relates to a stereoscopic display technology, in particular to a preparation method of a holographic polymer dispersed liquid crystal variable-pitch grating. Background technique [0002] Holographic polymer dispersed liquid crystal (H-PDLC) is a new type of optoelectronic information material and device, which has been extensively studied in recent years. Therefore, when the sample box filled with prepolymer is irradiated by the interference fringes produced by two beams of coherent light, a large amount of monomers in the bright fringes undergo polymerization reaction, and then the liquid crystal is squeezed to the dark fringes, and the monomers in the bright fringes are in the dark fringes. A large amount of monomers are consumed in the polymerization reaction, and the monomers in the dark stripes continue to diffuse and replenish to the bright stripes. Finally, a polymer-rich region corresponding to the bright stripe region and a poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/18G02B27/22G02F1/1334
CPCG02B5/1857G02B30/27G02F1/13342
Inventor 郑继红刘悠嵘王康妮刘璐李云章陆飞跃高辉桂坤
Owner UNIV OF SHANGHAI FOR SCI & TECH
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