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. 12, 2019
Filed:
Feb. 23, 2016
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
Masaki Inoue, Tokyo, JP;
Seiji Kitamura, Tokyo, JP;
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention has as its object the provision of a fluorescence light source apparatus that is prevented from a drop in reflectance and can provide high emission efficiency over a long period of time without causing the problem of exfoliation of a reflection layer from a fluorescent plate. The fluorescence light source apparatus according to the present invention includes a fluorescent plate that is made of a phosphor for emitting fluorescence under excitation light and a metal oxide and has a front surface serving as an excitation light incident surface, a reflection layer disposed on a back surface side of the fluorescent layer, and a heat dissipation substrate. A sealing layer covering the back surface and a peripheral side surface of the reflection layer is provided in close contact with a peripheral area of the back surface of the fluorescent plate via an adhesion layer.