Spread illuminating apparatus

Details Spread illuminating apparatus Spread illuminating apparatus

2007-12-20

2010-10-12

Ton, Anabel M (Department: 2875)

Illumination

Edge lighted panel

Light source

C362S613000, C362S800000, C362S606000, C362S608000

Reexamination Certificate

active

07810978

ABSTRACT:
A spread illuminating apparatus includes: a light conductor plate having a light inlet surface and a light outlet surface; a point light source disposed at the light inlet surface of the light conductor plate; and a light diffuser sheet disposed on the light outlet surface of the light conductor plate, wherein the light diffuser sheet has one end thereof extending beyond the light inlet surface and thereby covers at least a part of the point light source, whereby light which conventionally does not enter the light conductor plate directly from the light inlet surface is adapted to impinge on the light diffuser sheet and to fall incident on the light inlet surface and is efficiently utilized. A recess may be formed at the one end of the light diffuser sheet so as to expose a part of the light exit surface of the light conductor plate.

REFERENCES:
patent: 6065848 (2000-05-01), Tucker et al.
patent: 7364338 (2008-04-01), Chang
patent: 2008/0030650 (2008-02-01), Kitagawa et al.
patent: 2008/0170415 (2008-07-01), Han et al.
patent: 2008/0259641 (2008-10-01), Suzuki et al.
patent: A 2001-43721 (2001-02-01), None
patent: A 2002-343122 (2002-11-01), None

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