Collimated light source for liquid crystal display utilizing int

Details Collimated light source for liquid crystal display utilizing int Collimated light source for liquid crystal display utilizing int

1987-11-03

1988-08-23

Miller, Stanley D.

350331R, 350339R, G02F 113

Patent

active

047657189

ABSTRACT:
A collimated light source for Liquid Crystal Display includes a light integrating sphere and an internally reflective light pipe means for producing a relatively collimated light beam for illuminating a liquid crystal display. Compensation for offset or skew angle of the collimated light near the edge of the light pipe is provided by a secondary collimator taking the form of crossed cylindrical lenses.

REFERENCES:
patent: 4299447 (1981-11-01), Soltan et al.
patent: 4330813 (1982-05-01), Deutsch
patent: 4487481 (1984-12-01), Suzawa
patent: 4560999 (1985-12-01), Tokuhara
patent: 4704004 (1987-11-01), Nosker

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