Illumination – Revolving
Patent
1997-01-16
1998-07-14
Lazarus, Ira S.
Illumination
Revolving
362 26, 362 32, 362 29, 362 30, F21V 704, G01D 1128
Patent
active
057793395
ABSTRACT:
A surface light source apparatus is constituted such that an overhang portion overhanging a light source is provided on part of an end surface where the light source of an optical guide plate is arranged in such a manner that it is flush with the front surface of the optical guide plate and that an incident light control unit formed from a resin for diffusing and attenuating light is provided integratedly on at least an overhang portion side out of the overhang portion and the end surface of the optical guide plate, and accordingly light from the light source is transmitted through the overhang portion, radiated in an illumination direction, and diffused and attenuated by the incident light control unit to equalize the amount of light so that it can be used as illumination light. Thereby, the total area of the light emitting portions is increased.
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Kawada Koji
Konishi Satoru
Obata Takashi
Ohta Kazushige
Lam Nhat-Hang H.
Lazarus Ira S.
Stanley Electric Co. Ltd.
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