Brightness enhancement film with soft cutoff

Details Brightness enhancement film with soft cutoff Brightness enhancement film with soft cutoff

1996-02-05

1999-06-29

Spyrou, Cassandra

Optical: systems and elements

Prism

359834, 349 57, 349 62, G02F 11335, G02B 504, G02B 718

Patent

active

059176644

ABSTRACT:
A brightness enhancement film has a plurality of linear prisms. The prisms are disposed in pairs, each pair having first and second prisms and each prism has a prism angle and a valley angle. Either the prism angles or the valley angles, but not both, are equal.

REFERENCES:
patent: 2313947 (1943-03-01), Klinkum
patent: 4519675 (1985-05-01), Bar-Yonah
patent: 5040883 (1991-08-01), Cobb, Jr.
patent: 5467417 (1995-11-01), Nakamura et al.

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