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. 02, 2016
Filed:
Sep. 24, 2013
Applicant:
Nalux Co., Ltd., Osaka-shi, Osaka, JP;
Inventors:
Daisuke Seki, Osaka, JP;
Katsumoto Ikeda, Osaka, JP;
Assignee:
NALUX CO., LTD., Osaka-Shi, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 13/04 (2006.01); F21V 5/04 (2006.01); F21V 7/00 (2006.01); F21Y 101/02 (2006.01); H01L 33/58 (2010.01);
U.S. Cl.
CPC ...
F21V 13/04 (2013.01); F21V 5/04 (2013.01); F21V 5/046 (2013.01); F21V 7/0091 (2013.01); F21Y 2101/02 (2013.01); H01L 33/58 (2013.01);
Abstract
An optical element according to the present invention includes a light receiving surface which is designed to cover an emitting surface of a planar light source device, a reflecting surface, a light exit surface which is contiguous to the periphery of the reflecting surface. When the center of the emitting surface is designated as a point O and an axis which passes through the point O and is perpendicular to the emitting surface is designated as an optical axis of the optical element, the reflecting surface has a concave portion around the optical axis and an outer edge surrounding the concave portion.