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Fast liquid crystal light shutter

Journal article
Authors Lachezar Komitov
Gurumurthy Hegde
Dimitar Kolev
Published in JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 44
Issue 44
Pages 442002
ISSN 0022-3727
Publication year 2011
Published at Department of Physics (GU)
Pages 442002
Language en
Links dx.doi.org/10.1088/0022-3727/44/44/...
Subject categories Physical Sciences

Abstract

By proper assembling and electronic driving of two parallel single nematic liquid crystal cells with planar and vertical alignment of the liquid crystal molecules, respectively, arranged in a double cell, fast switching between bright and dark states, back and forth, is achieved. The switching rise and fall time of the device corresponds to the switching rise time of the cells from the relaxed to the switched state. The simultaneous transition of the cells from the switched to the relaxed state, however, remains optically hidden from the observer due to the optical compensation effect during this transition.

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