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. 27, 2019
Filed:
Aug. 30, 2016
Applicant:
Enplas Corporation, Saitama, JP;
Inventor:
Toshihiko Mochida, Saitama, JP;
Assignee:
ENPLAS CORPORATION, Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 3/02 (2006.01); F21V 5/04 (2006.01); F21V 13/04 (2006.01); G02B 19/00 (2006.01); H01L 33/58 (2010.01); F21Y 105/16 (2016.01); F21Y 115/10 (2016.01); G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
F21V 5/045 (2013.01); F21V 3/02 (2013.01); F21V 13/04 (2013.01); G02B 19/0028 (2013.01); G02B 19/0061 (2013.01); F21Y 2105/16 (2016.08); F21Y 2115/10 (2016.08); G02F 1/133603 (2013.01); G02F 1/133606 (2013.01); G02F 1/133611 (2013.01); G02F 2001/133607 (2013.01); H01L 33/58 (2013.01);
Abstract
The purpose of the present invention is to provide a light flux control member capable of suppressing brightness variation due to light refracted by an inclined surface. The light flux control member comprises: an entry surface which is an inner surface of a recess portion formed on a back side; an emission surface which is formed on a front side; and an annular groove portion which is formed on the back side and outside the entry surface. The annular groove portion includes an outside inclined surface and an inside surface. The inside surface includes a plurality of retroreflective portions.