SURFACE ILLUMINATOR

WIPO Patent Application WO/2006/043344

A1

A surface illuminator in which the leak light from a point light source can be directed to the light input surface of a light guide plate with high efficiency and the luminance is improved without marring the uniformity. The surface illuminator (10) comprises a light guide plate (11) having light input surfaces (12a, 12b) at an edge part and point light sources (16a, 16b) arranged on the light input surfaces (12a, 12b). The surface illuminator (10) further comprises reflecting means (21) covering the point light sources (16a, 16b) from at least a major surface (for example, a surface (13)) of the light guide plate (11). The reflecting means (21) has a reflecting surface inclined with respect to the light input surfaces. With this, most of the light leaking from the point light sources (16a, 16b) toward the major surface (13) can be reflected toward the light input surfaces (12a, 12b), thus uniformly improving the luminance of the surface illuminator.

JP2001118405	APPARATUS FOR DIVIDING LIGHT OF LIGHT SOURCE INTO PLURALITY OF SEPARATE ILLUMINATION ELEMENTS
JP7044024	Light guide member and indicator
WO/2011/017204	MICROSTRUCTURES FOR LIGHT GUIDE ILLUMINATION

MIZUTANI HITOSHI (JP)
NAKAYAMA DAISUKE (JP)

PCT/JP2005/002555

April 27, 2006

February 18, 2005

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MINEBEA CO LTD (JP)
MIZUTANI HITOSHI (JP)
NAKAYAMA DAISUKE (JP)

F21V8/00; G02B6/42; G02F1/13357; H01L33/00; F21Y101/02; (IPC1-7): F21V8/00; F21Y101:02; G02B6/42; G02F1/13357; H01L33/00

JP2001135122A	2001-05-18
JP2003031015A	2003-01-31
JP2000036209A	2000-02-02
JPH1010533A	1998-01-16

Hanabusa, Tsuneo c/o Hanabusa, Patent Office (Shin-Ochanomizu Urban Trinity 2, Kandasurugadai 3-chom, Chiyodaku Tokyo 62, JP)

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