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. 22, 2019
Filed:
Nov. 08, 2016
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/20 (2006.01); F21K 9/64 (2016.01); G02B 19/00 (2006.01); G02B 27/10 (2006.01); G02B 27/14 (2006.01); G02B 27/28 (2006.01); G02B 5/02 (2006.01); G02B 5/30 (2006.01); G03B 21/00 (2006.01); G03B 21/16 (2006.01); F21V 9/30 (2018.01); G02B 27/09 (2006.01); F21Y 115/30 (2016.01);
U.S. Cl.
CPC ...
G03B 21/204 (2013.01); F21K 9/64 (2016.08); F21V 9/30 (2018.02); G02B 5/3083 (2013.01); G02B 27/0905 (2013.01); G02B 27/0961 (2013.01); G02B 27/1006 (2013.01); G02B 27/141 (2013.01); G03B 21/005 (2013.01); G03B 21/16 (2013.01); G03B 21/2013 (2013.01); F21Y 2115/30 (2016.08); G02B 5/0284 (2013.01); G02B 19/0009 (2013.01); G02B 27/149 (2013.01); G02B 27/283 (2013.01);
Abstract
A wavelength conversion device includes a rotating device and a base member which is rotated by the rotating device. The base member includes a wavelength conversion portion which is disposed in an annular shape on a first surface of the base member, a first region which is located further inside than the wavelength conversion portion, and a second region which is located further outside than the wavelength conversion portion, and is larger in surface area than the first region.