Surface light source equipment and apparatus using the same

Details Surface light source equipment and apparatus using the same Surface light source equipment and apparatus using the same

2008-05-13

2008-05-13

Sawhney, Hargobind S. (Department: 2885)

Illumination

Edge lighted panel

Light guide

C362S616000

Reexamination Certificate

active

07371000

ABSTRACT:
A light emission part in the form of a point light source composed of LED, etc., and a light conductive plate, and the light emission part is arranged in opposition to a light incident surface of the light conductive plate. First diffusion patterns and second diffusion patterns are provided alternately on the light incident surface. The first diffusion patterns comprise a V-groove provided on an inner surface of a rectangular-shaped recess provided concavely on the light incident surface. The second diffusion patterns comprise a V-groove provided on the light incident surface. When a virtual line segment in parallel to a line segment drawn from the light emission part to a corner of the surface light emission region of the light conductive plate is drawn from an end of the recess, the V-groove and the second diffusion patterns are provided not to get over the virtual line segment.

REFERENCES:
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patent: 10-199316 (1998-07-01), None
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patent: 11-203923 (1999-07-01), None
patent: 2000-30520 (2000-01-01), None
patent: 2001255415 (2001-09-01), None
Patent Abstracts of Japan, Publication No. 10-255530, Publication Date: Sep. 25, 1998, 30 pages.
Patent Abstracts of Japan, Publication No. 11-203923, Publication Date: Jul. 30, 1999, 22 pages.
Patent Abstracts of Japan, Publication No. 2000-030520, Publication Date: Jan. 28, 2000, 24 pages.
Patent Abstracts of Japan, Publication No. 10-293202, Publication Date: Nov. 4, 1998, 14 pages.
Patent Abstracts of Japan, Publication No. 10-199316, Publication Date: Jul. 31, 1998, 13 pages.
International Search Report issued for International application No. PCT/JP2004/017421 mailed on Dec. 28, 2004 and English translation thereof, 6 pages.

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