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:
Feb. 02, 2021
Filed:
Nov. 19, 2019
Applicant:
Sharp Kabushiki Kaisha, Osaka, JP;
Inventors:
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21K 9/64 (2016.01); G02B 27/30 (2006.01); G02B 5/02 (2006.01); F21V 9/35 (2018.01); F21Y 115/30 (2016.01);
U.S. Cl.
CPC ...
F21K 9/64 (2016.08); F21V 9/35 (2018.02); G02B 5/0294 (2013.01); G02B 27/30 (2013.01); F21Y 2115/30 (2016.08);
Abstract
[Object] Collection efficiency of a reflector that reflects a converted beam, which is converted from a pump beam by a phosphor, and projects the resultant as a projection beam is increased. [Solution] An optical member () of a light source unit () deflects a pump beam (PB) so that a first angle of incidence (α) of a pump beam (PBX) relative to a surface of a phosphor () is larger than a second angle of incidence (α) of the pump beam (PB), which is incident on the optical member (), relative to the surface of the phosphor ().