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. 28, 2024
Filed:
Dec. 13, 2021
Ngk Spark Plug Co., Ltd., Nagoya, JP;
Yosuke Yatsuya, Nagoya, JP;
Toshiyuki Sakurai, Nagoya, JP;
Shohei Takaku, Nagoya, JP;
Hiroki Yamauchi, Nagoya, JP;
Tomoo Tanaka, Nagoya, JP;
Hiroki Takeuchi, Nagoya, JP;
Shinji Ban, Nagoya, JP;
NITERRA CO., LTD., Nagoya, JP;
Abstract
There is provided a wavelength conversion member including: a fluorescent body and a reflective film. The fluorescent body is configured to emit fluorescence by an excitation light and has an incident surface into which the excitation light comes and a rear surface which faces the incident surface. The reflective film is arranged on a side of the rear surface of the fluorescent body and includes a metal layer and ceramic particles dispersed in the metal layer. The ceramic particles are crystalline, and a melting point of the ceramic particles is higher than a melting point of a metal constructing the metal layer.