Illumination device, liquid crystal device, and electronic...

Details Illumination device, liquid crystal device, and electronic... Illumination device, liquid crystal device, and electronic...

2006-02-21

2006-02-21

Tso, Laura K. (Department: 2875)

Illumination

Revolving

C362S561000, C362S084000

Reexamination Certificate

active

07001035

ABSTRACT:
An illumination device is provided to solve locally high luminance near point-shaped light sources, while preventing overall decrease in luminance at the light-emitting face of a light guide member. The illumination device includes a light source for generating light, and a light guide member which receives light from the light source at a light input face and emits light from a light emitting face. A continuous optical pattern with prism faces and flat faces is provided on the light input face. Light emitted from the light source is diffused in the plane direction by the optical pattern, so there is no occurrence of locally-high-luminance areas near the LEDs in the light guide member. Moreover, the luminance of the light emitted in a planar manner from the light-emitting face does not decrease.

REFERENCES:
patent: 5521797 (1996-05-01), Kashima et al.
patent: 6065846 (2000-05-01), Kato et al.
patent: 6147725 (2000-11-01), Yuuki et al.
patent: 6601962 (2003-08-01), Ehara et al.
patent: 6648485 (2003-11-01), Colgan et al.
patent: 04-63402 (1992-05-01), None
patent: 09-145934 (1997-06-01), None
patent: 10-199316 (1998-07-01), None
patent: 10-199318 (1998-07-01), None
patent: 10-253957 (1998-09-01), None
patent: 10-260404 (1998-09-01), None
patent: 10-293202 (1998-11-01), None
patent: 030520 (2000-01-01), None
patent: 2000-057831 (2000-02-01), None
patent: 2000-306411 (2000-11-01), None
patent: 118416 (2001-04-01), None
patent: 135121 (2001-05-01), None
patent: 2001-236811 (2001-08-01), None
patent: 2001-345006 (2001-12-01), None
patent: 042534 (2002-02-01), None
patent: 2002-196151 (2002-07-01), None
Communication from Chinese Patent Office re: counterpart application.
Communication from Chinese Patent Office re: counterpart application.
Communication from Japanese Patent Office re: counterpart application.

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