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. 07, 2021
Filed:
Dec. 12, 2018
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Naotake Okada, Anjo, JP;
Iwao Ohwada, Nagoya, JP;
Shoichiro Yamaguchi, Ichinomiya, JP;
Keiichiro Asai, Nagoya, JP;
Jungo Kondo, Miyoshi, JP;
Assignee:
NGK INSULATORS, LTD., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/50 (2010.01); F21V 7/30 (2018.01); G02B 5/28 (2006.01); G02B 5/26 (2006.01); C09K 11/00 (2006.01); G02B 5/08 (2006.01); G02B 5/20 (2006.01); F21V 13/08 (2006.01); F21K 9/64 (2016.01); F21Y 115/30 (2016.01);
U.S. Cl.
CPC ...
F21V 7/30 (2018.02); C09K 11/00 (2013.01); F21K 9/64 (2016.08); F21V 13/08 (2013.01); G02B 5/08 (2013.01); G02B 5/20 (2013.01); G02B 5/26 (2013.01); G02B 5/28 (2013.01); H01L 33/507 (2013.01); F21Y 2115/30 (2016.08);
Abstract
A phosphor device includes a phosphor layer composed of a phosphor glass or phosphor single crystal, a reflective film provided on the phosphor layer, a warping suppression layer provided on the reflective film, and a supporting body bonded to the warping suppression layer by direct bonding. An excitation light incident into the phosphor layer is converted to fluorescence, and the fluorescence and excitation light are reflected by the reflective film and emitted from the phosphor layer.