Method of characterization of liquid crystal cell

Details Method of characterization of liquid crystal cell Method of characterization of liquid crystal cell

2007-10-02

2007-10-02

Lee, Hwa (Andrew) (Department: 2886)

Optics: measuring and testing

By light interference

For dimensional measurement

Reexamination Certificate

active

10515123

ABSTRACT:
A method for simultaneous measuring a thickness of a liquid crystal layer and an average refractive index of the said liquid crystal in sealed liquid crystal cell is disclosed. The method is based on analysis of spectral positions of maxima and minima of interference oscillations, their magnitudes and their envelope in the spectrum of light mirrored by the liquid crystal cell at several different angles-of-incidence. The method is applicable to cells filled with different liquid crystals including cholesterics and smectics.

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