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:
May. 11, 2021
Filed:
Aug. 02, 2019
Applicant:
Sharp Kabushiki Kaisha, Sakai, JP;
Inventors:
Koji Takahashi, Sakai, JP;
Karl Peter Welna, Oxford, GB;
Assignee:
SHARP KABUSHIKI KAISHA, Sakai, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21K 9/64 (2016.01); F21K 9/68 (2016.01); F21K 9/61 (2016.01); F21S 41/176 (2018.01); F21S 41/365 (2018.01); F21S 41/40 (2018.01); F21S 41/16 (2018.01); F21S 45/70 (2018.01); F21Y 115/30 (2016.01);
U.S. Cl.
CPC ...
F21K 9/64 (2016.08); F21K 9/61 (2016.08); F21K 9/68 (2016.08); F21S 41/16 (2018.01); F21S 41/176 (2018.01); F21S 41/365 (2018.01); F21S 41/40 (2018.01); F21S 45/70 (2018.01); F21Y 2115/30 (2016.08);
Abstract
[Object] External leakage of laser light can be prevented in a reflective type light source device. [Solution] Laser light excites a first surface () of a phosphor light-emitting section. (), and a window portion () formed of a transparent member disposed spaced away from the first surface () is provided. A light leakage prevention portion (), which inhibits the laser light reflected at the first surface () of the phosphor light-emitting section () from leaking to the outside through the window portion () is provided to part of the window portion ().