Low birefringence encapsulated liquid crystal and optical shutte

Details Low birefringence encapsulated liquid crystal and optical shutte Low birefringence encapsulated liquid crystal and optical shutte

1983-03-21

1985-12-03

Corbin, John K.

Compositions

Radioactive compositions

Nuclear reactor fuel

350347E, 350349, 25229901, G02F 113

Patent

active

045562890

ABSTRACT:
Briefly, a liquid crystal material composition has a low, preferably zero or near zero, birefringence characteristic. Such material is mixed with a quantity of pleochroic dye to form a solution therewith to increase absorption characteristics and is encapsulated; and such encapsulated material may be used as an optical light control device or optical shutter in which light intensity may be controlled without distorting or at least without substantially distorting the optical image transmitted therethrough.

REFERENCES:
patent: 3551026 (1970-12-01), Heilmeier
patent: 3600060 (1971-08-01), Churchill
patent: 3694053 (1972-09-01), Kahn
patent: 3720623 (1973-03-01), Cartmell et al.
patent: 3947183 (1976-03-01), Haas et al.
patent: 4029392 (1977-06-01), Moriyama et al.
patent: 4279152 (1981-07-01), Crossland
patent: 4435047 (1984-03-01), Fergason
Chang, R., "The Anisotropic Refractive Indices of Aligned MBBA Liquid Crystal Films," Molecular Crystals & Liquid Crystals, vol. 28, pp. 1-8, (1973).

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