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:
Dec. 21, 2021
Filed:
Aug. 26, 2020
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Toshiaki Takenaka, Osaka, JP;
Hirofumi. Konishi, Osaka, JP;
Abstract
Lighting system includes light source that includes at least one light-emitting device and emits first light (laser light); wavelength conversion member that converts part of the first light into second light having a different wavelength from that of the first light; an optical system (light guide member) where the first light enters and that applies the first light to wavelength conversion member; optical sensor that receives part of the second light as monitor light and outputs monitor signal corresponding to the intensity of monitor light; and output control circuit that controls light source and optical sensor. Output control circuit performs an optical system inspection of conditions of the optical system and wavelength conversion member and a light source inspection of a condition of light source in accordance with monitor signal, using a time division method.