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Optical Engineering

Simple method for controlled variation of liquid crystal cell thickness
Author(s): Eldad Bahat-Treidel; Boris Apter; Uzi Efron
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Paper Abstract

A simple method of applying mechanical pressure to vary the cell thickness of a liquid crystal cell in a controlled, repeatable manner is presented. Experimental evaluation of several cells subjected to a controlled, mechanical point pressure show the capability of attaining a liquid crystal cell thickness range of 3 to 12 µm, at an accuracy of 5%, within a 2- to 6-mm radius around the pressure point, for the 22×25-mm cells studied. Temporal stability tests show no measurable drift in the cell thickness for more than 120 h. The method offers the advantages of simplicity (avoiding the need of multiple liquid crystal cells), accuracy, repeatability, and temporal stability, as well as speedy change of the cell thickness.

Paper Details

Date Published: 1 December 2004
PDF: 5 pages
Opt. Eng. 43(12) doi: 10.1117/1.1810143
Published in: Optical Engineering Volume 43, Issue 12
Show Author Affiliations
Eldad Bahat-Treidel, Ben-Gurion Univ. (Israel)
Boris Apter, Holon Institute of Technology (Israel)
Uzi Efron, Holon Institute of Technology (Israel)

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