Optical filter employing a copolyglutamate having thermotropic c

Details Optical filter employing a copolyglutamate having thermotropic c Optical filter employing a copolyglutamate having thermotropic c

1989-02-02

1991-08-06

Maples, John S.

Optical: systems and elements

Optical computing without diffraction

2522997, 25229901, G02F 113

Patent

active

050371860

ABSTRACT:
An optical filter consisting essentially of a glutamate copolymer having thermotropic cholesteric liquid crystal properties and represented by the general formula: ##STR1## wherein R.sub.1 is an alkyl group, a cycloalkyl group, an aryl group or an arylalkyl group having 10 or less carbon atoms, and R.sub.2 an alkyl group, a cycloalkyl group, an aryl group or an arylalkyl group having 6 to 30 carbon atoms, provided that R.sub.1 and R.sub.2 are different from each other; m and n are numbers satisfying the following relationships 50.ltoreq.m+n.ltoreq.2000 and m
=80 to 10/20 to 90.

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J. Adams et al., J. Appl. Phys. 42 (10), 4096-4098 (1971).
T. Tsutsui et al., Polymer, 22, 117-123 (1981).

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