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Liquid crystal laser steering gear

A diverter, laser technology, applied in instruments, optics, nonlinear optics, etc., can solve the problems of high driving voltage, large volume and weight, short stroke, etc., and achieve the effect of reducing wavefront distortion and high-precision tracking

Inactive Publication Date: 2019-02-15
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the different thickness of the liquid crystal wedge, there is a dynamic distortion of the wave front.
FSM has the disadvantages of high driving voltage, short stroke, large volume and weight, etc.

Method used

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  • Liquid crystal laser steering gear
  • Liquid crystal laser steering gear
  • Liquid crystal laser steering gear

Examples

Experimental program
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Embodiment Construction

[0016] This device is required to be able to deflect the light beam within a certain range, and the deflection accuracy is in the order of μrad. Due to the limited deflection angle of the 1-layer structure, a laminated structure is adopted. The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] Such as figure 1 As shown, a liquid crystal laser redirector includes a plurality of structural layers distributed up and down, and each structural layer sequentially includes a first substrate, a liquid crystal molecular layer and a second substrate;

[0018] The first substrate includes a first substrate glass 1, a first ITO electrode layer 2, and a first alignment layer 3 from top to bottom, and the second substrate includes a second alignment layer 6, a second ITO electrode layer from top to bottom 7 and the second substrate glass 8;

[0019] The liquid crystal molecular layer 9 is located between th...

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PUM

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Abstract

The invention discloses a liquid crystal laser steering gear. The liquid crystal laser steering gear comprises multiple structure layers distributed up and down. Each structure layer comprises a firstsubstrate, a liquid crystal molecular layer and a second substrate. Each first substrate sequentially comprises first substrate glass, a first ITO electrode layer and a first orientation layer from top to bottom. Each second substrate sequentially comprises a second orientation layer, a second ITO electrode layer and second substrate glass from top to bottom. The liquid crystal molecular layers are located between the first orientation layers and the second orientation layers, and multiple spacers with the same height are sprayed into the liquid crystal molecular layers for supporting. The edges of the first substrates and the edges of the second substrates are sealed and packaged through frame glue. The deflection angle of emergent light is adjusted by changing the width of each region,the thickness of a liquid crystal box and voltages, light beams are tracked at high precision, the liquid crystal laser steering gear has the advantages of high precision and rapid response, and meanwhile wavefront distortion can be reduced.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal optoelectronic devices, and specifically discloses a liquid crystal laser diverter, which can control the direction of laser light. It is used in space laser communication and space laser radar to track targets with high precision. Background technique [0002] Space laser communication is a communication method that uses laser as a carrier to transmit information through transmission channels such as free space and the atmosphere. It has a series of advantages such as large information capacity, high transmission rate, strong electronic countermeasures, small system size, light weight, low power consumption, and relatively high cost performance. It is recognized as one of the best ways for future aerospace communications and satellite communications. Space beam acquisition, alignment, tracking (APT—Acquisition, Pointing and Tracking) technology is an important key technology in space lase...

Claims

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Application Information

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IPC IPC(8): G02F1/29G02F1/1339G02F1/1345G02F1/1337
CPCG02F1/1337G02F1/13394G02F1/13452G02F1/29
Inventor 汪相如刘晓鹏张炼贺晓娴
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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