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:
Apr. 23, 2019
Filed:
Mar. 06, 2017
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 26/00 (2006.01); G03B 21/20 (2006.01);
U.S. Cl.
CPC ...
G03B 21/204 (2013.01); G02B 26/008 (2013.01);
Abstract
A phosphor wheel includes a disc-shaped substrate and a phosphor ring fixedly bonded to the substrate. At least three cut-out sections or openings are formed on a rim of the substrate. The shortest length from the center of the substrate to inner edges of the cut-out sections or inner edges of the openings is generally equal to a radius of an outer circumference of the phosphor ring.