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:
Sep. 15, 2020
Filed:
Oct. 16, 2018
Applicant:
Nichia Corporation, Anan-shi, Tokushima, JP;
Inventor:
Yohei Kawano, Tokushima, JP;
Assignee:
Nichia, Anan-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 5/04 (2006.01); F21V 8/00 (2006.01); G02B 5/02 (2006.01); F21V 13/04 (2006.01); F21V 7/00 (2006.01); F21V 5/00 (2018.01); G02B 19/00 (2006.01); F21Y 101/00 (2016.01); F21Y 115/10 (2016.01); G02B 27/09 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0096 (2013.01); F21V 5/008 (2013.01); F21V 7/0091 (2013.01); F21V 13/04 (2013.01); G02B 5/0215 (2013.01); G02B 5/0221 (2013.01); G02B 6/0045 (2013.01); G02B 6/0055 (2013.01); G02B 19/0023 (2013.01); G02B 19/0066 (2013.01); F21Y 2101/00 (2013.01); F21Y 2115/10 (2016.08); G02B 5/02 (2013.01); G02B 27/0994 (2013.01);
Abstract
A light pipe includes an emission end portion with a light exit surface and a back surface opposite the light exit surface; a columnar light-guide portion protruding from the back surface; and at least one annular light-guide portion protruding from the back surface and concentrically surrounding the columnar light-guide portion; and a gap separating the annular light-guide portion and the columnar light-guide portion. An illumination device includes a light source unit having an annular array of light emitting diodes; a reflector; and the light pipe positioned between the light source unit and the reflector.