摘要
得益于光学各向异性以及自适应刺激响应特性,液晶已被用作制备各种功能光学器件的关键材料.其中具有视角控制特性的液晶显示器和液晶智能窗等光学器件在显示器防窥、太阳光调制、光场成形以及防反射等领域表现出巨大的应用前景.作为此类器件的核心装置,近年来一系列对光传输具有角度依赖性的光学单元被设计和集成,从而使液晶器件能够满足不同应用场景的视角控制需求,例如窄视角控制、指定视角控制或者动态视角可控.本文介绍了基于不同种类液晶或非液晶材料的视角控制单元,总结了不同单元在视角控制原理上的差别以及在实际应用中存在的问题,并对其未来的发展趋势以及潜在的应用场景进行了展望.
Abstract
Benefiting from optical anisotropy and adaptive stimulus-responsive properties,liquid crystals(LCs)have been utilized as critical materials in the preparation of various functional optical devices.Among these,optical devices with viewing angle control characteristics,such as LC display and LC smart window,show great potential in fields like display privacy protection,sunlight modulation,light field shaping and anti-reflection.As the core components of such devices,a series of optical units with angle-dependent light transmission properties have been designed and integrated in recent years,enabling LC devices to meet the viewing angle control requirements of different application scenarios,such as narrow viewing angle control,specified viewing angle control,or dynamic viewing angle adjust ability.This article introduces viewing angle control units based on different types of LC or non-LC materials,summarizes the differences in their view angle control mechanisms,discusses the challenges they face in practical applications,and offers a perspective on their future development trends and potential application scenarios.
国家科技期刊平台
NSTL
万方数据