Unlock instant, AI-driven research and patent intelligence for your innovation.

Hybrid-aligned dual-frequency liquid crystal polarization grating

A liquid crystal polarization grating, dual-frequency liquid crystal technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of high driving voltage, light leakage response speed, etc., and achieve the effect of reducing driving voltage, reducing light leakage, and eliminating transition thresholds

Active Publication Date: 2018-09-28
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
View PDF6 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hybrid arrangement dual-frequency liquid crystal polarization grating, which solves the problems of high driving voltage, light leakage and slow response speed in the traditional liquid crystal polarization grating

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hybrid-aligned dual-frequency liquid crystal polarization grating
  • Hybrid-aligned dual-frequency liquid crystal polarization grating
  • Hybrid-aligned dual-frequency liquid crystal polarization grating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] 1. Preparation of mixed-arrangement dual-frequency liquid crystal polarization grating

[0032] 1) figure 1 It is a mixed-arrangement dual-frequency liquid crystal polarization grating structure, which includes a light-controlled alignment liquid crystal substrate, a vertical alignment liquid crystal substrate and a dual-frequency liquid crystal. ITO conductive film, light control alignment agent, and vertical alignment side liquid crystal substrate include substrate, ITO conductive film, and vertical alignment agent.

[0033] 2) The preparation of the optically controlled alignment liquid crystal substrate, at first the substrate is cleaned, and after drying, an ITO conductive film is evaporated on one side of the substrate with a thickness of about 20nm, and then a photoalignment agent is spin-coated on the ITO conductive film. The thickness is about 80nm, and the photoalignment agent is cured at 230°C, and finally the above substrate is placed on figure 2 Exposure...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a hybrid-aligned dual-frequency liquid crystal polarization grating, belongs to the technical field of non-mechanical light beam deflection in an active optoelectronic system,and mainly aims at the problems of light leakage, high driving voltage and low response speed of the conventional active liquid crystal polarization grating in a light beam deflection process. The hybrid-aligned dual-frequency liquid crystal polarization grating mainly comprises a photo-aligned liquid crystal substrate, a vertical-aligned liquid crystal substrate and dual-frequency liquid crystals, and a sandwich structure is formed. The liquid crystal polarization grating is prepared with the photo-alignment technique and the vertical-alignment technique, and light beam deflection with ultrahigh diffraction efficiency can be realized; by means of the hybrid-aligned structure, Freedericksz transition threshold can be eliminated and the driving voltage can be reduced; phase modulation quantity of the hybrid-aligned structure is increased substantially by the dual-frequency liquid crystals, and sub-millisecond response speed is realized.

Description

technical field [0001] The invention belongs to the technical field of non-mechanical light beam deflection in active photoelectric systems, and specifically refers to a mixed-arrangement dual-frequency liquid crystal polarization grating. Background technique [0002] In the active optoelectronic system, the deflection and scanning device of the laser beam is a core component, such as the precise control of the deflection angle of the laser beam by the antenna in the laser communication system, and the control of the coherent combined laser beam by the aimer in the laser weapon system, etc. According to the classification of the working carrier, the beam deflection system can be mainly divided into mechanical beam deflection system and non-mechanical beam deflection system. The non-mechanical beam deflection system has the advantages of small size, light weight, low power consumption, high sensitivity, and programmable agile control. , no inertial effect and other obvious a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337G02F1/137G02F1/29
CPCG02F1/1337G02F1/133788G02F1/137G02F1/29
Inventor 王启东穆全全刘永刚李松振彭增辉姚丽双赵志伟王承邈鲁兴海曹召良宣丽李大禹杨程亮张佩光徐焕宇张杏云
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com