Blue-phase liquid crystal PM (Phase Modulation) optical system

Abstract

The invention relates to a blue-phase liquid crystal PM (Phase Modulation) optical system. The blue phase liquid crystal PM optical system consists of a blue-phase liquid crystal PM device and an external optical system; the blue-phase liquid crystal PM device comprises a silicon substrate, a pixel electrode, a blue-phase liquid crystal, a public electrode and an upper substrate which are sequentially arranged from bottom to up; the external optical system comprises a first optical device, a second optical device and a third optical device, wherein the first optical device is used for receiving incident light and generating a first reflection light and a first transmission light which is opposite to the first reflection light, the second optical device is used for generating a second transmission light and a second reflection light which is vertical to the second transmission light, and the third optical device is used for forming the second transmission light by the first transmission light. The blue-phase liquid crystal PM device adopts a silicon substation reflection model for driving the blue-phase liquid crystal to control phase distribution, and an optical path is 2 times that a traditional reflection model by combining the external optical system; furthermore, the blue-phase liquid crystal PM optical system is low in voltage and quick to respond, the PM features can be improved by automatically compensating the phase deviation brought by a edge electric field, and the resolution can be improved.

Description

technical field [0001] The invention relates to a phase modulation optical system, in particular to a phase modulation optical system based on blue phase liquid crystal adaptive liquid crystal. Background technique [0002] Liquid crystal phase modulators, especially liquid crystal phase modulators with pure phase modulation, can only modulate the wavefront phase without causing absorption of light energy, so the diffraction efficiency is extremely high, and the control of the direction and spatial distribution of light beams shows Unique advantages have great potential application value in the fields of optical interconnection, optical communication, optical computing, and photoelectric countermeasures. [0003] At present, the phase modulator composed of nematic liquid crystal is used, and the liquid crystal screen composed of upper and lower glass substrates adopts parallel orientation to form parallel and uniformly arranged liquid crystals to generate phase modulation. ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to address the limitations of slow response speed and low resolution of existing liquid crystal phase modulators, and propose a blue-phase liquid crystal phase modulation optical system to improve response speed, improve phase modulation characteristics, and improve resolution

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