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1 December 2004 Simple method for controlled variation of liquid crystal cell thickness
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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.
©(2004) Society of Photo-Optical Instrumentation Engineers (SPIE)
Eldad Bahat-Treidel, Boris Apter, and Uzi Efron "Simple method for controlled variation of liquid crystal cell thickness," Optical Engineering 43(12), (1 December 2004).
Published: 1 December 2004

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