The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 2010
Filed:
Sep. 18, 2007
Takako Yamamoto, Kusatsu, JP;
Masafumi Danno, Kusatsu, JP;
Mamoru Yabe, Sakado, JP;
Gen Sakai, Sakado, JP;
Yoshihiro Ueno, Kusatsu, JP;
Takako Yamamoto, Kusatsu, JP;
Masafumi Danno, Kusatsu, JP;
Mamoru Yabe, Sakado, JP;
Gen Sakai, Sakado, JP;
Yoshihiro Ueno, Kusatsu, JP;
OMRON Corporation, Kyoto, JP;
Abstract
A surface light source apparatus including a point light source, a light guide plate which spreads light introduced from the point light source into a planar shape to output the light from a light outgoing plane, and a light blocking member which covers parts of the point light source and the light outgoing plane of the light guide plate. A gap shielding member is projected toward the light outgoing plane from a surface on a side facing the light outgoing plane of the light blocking member. At least a portion facing the light outgoing plane in the gap shielding member is made of a material having a light blocking property.