Surface light source device

Details Surface light source device Surface light source device

1998-05-26

1999-10-26

Husar, Stephen

Illumination

Revolving

362 27, F21V 800

Patent

active

059715596

ABSTRACT:
A surface light source device using a light conducting member, in which a multiplicity of concave portions are formed on an opposite surface of a light emitting surface of the light conducting member and the concave portions are arranged to have specific shapes to obtain a bright surface light source with a uniform brightness. A light diffusing material is fulfilled within the concave portions of the light conducting member so that a more uniform brightness can be obtained in an easy manner.

REFERENCES:
patent: 5349503 (1994-09-01), Blonder et al.
patent: 5377084 (1994-12-01), Kojima et al.
patent: 5408388 (1995-04-01), Kobayashi et al.
patent: 5420761 (1995-05-01), DuNah et al.
patent: 5461547 (1995-10-01), Ciupke et al.
patent: 5485291 (1996-01-01), Qiao et al.
patent: 5485354 (1996-01-01), Ciupke et al.

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