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:
Oct. 15, 2019
Filed:
Oct. 18, 2017
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventor:
Kazuyuki Yamae, Nara, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 13/04 (2006.01); F21S 8/02 (2006.01); F21V 5/04 (2006.01); F21V 17/06 (2006.01); F21V 19/02 (2006.01); F21V 21/04 (2006.01); G02B 7/02 (2006.01); F21V 5/00 (2018.01); G02B 3/08 (2006.01); G02B 27/09 (2006.01); F21K 9/20 (2016.01); F21K 9/68 (2016.01); F21Y 115/10 (2016.01); F21S 8/00 (2006.01); F21V 21/28 (2006.01); F21V 23/00 (2015.01); F21V 21/30 (2006.01); F21Y 115/20 (2016.01); F21Y 115/15 (2016.01);
U.S. Cl.
CPC ...
F21V 13/04 (2013.01); F21S 8/02 (2013.01); F21V 5/004 (2013.01); F21V 5/04 (2013.01); F21V 5/045 (2013.01); F21V 17/06 (2013.01); F21V 19/02 (2013.01); F21V 21/04 (2013.01); G02B 3/08 (2013.01); G02B 7/02 (2013.01); G02B 27/095 (2013.01); G02B 27/0938 (2013.01); G02B 27/0983 (2013.01); F21K 9/20 (2016.08); F21K 9/68 (2016.08); F21S 8/00 (2013.01); F21V 5/008 (2013.01); F21V 21/28 (2013.01); F21V 21/30 (2013.01); F21V 23/002 (2013.01); F21Y 2115/10 (2016.08); F21Y 2115/15 (2016.08); F21Y 2115/20 (2016.08);
Abstract
A lighting device includes a light source and a light distributor disposed on a light emission side of the light source. The light distributor includes an entrance surface through which light enters and an exit surface through which the light that enters through the entrance surface exits. At least one of the entrance surface and the exit surface includes concave regions. Each of the concave regions includes a smooth concave surface. The concave regions control distribution of light from the light source that is refracted or reflected by an optical lens or a reflective component.