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:
Jun. 24, 2025
Filed:
Jul. 07, 2022
Nichia Corporation, Anan, JP;
Toshiyuki Hirai, Komatsushima, JP;
Gentaro Tanaka, Tokushima, JP;
NICHIA CORPORATION, Anan, JP;
Abstract
Provided is a light emitting device, including a light emitting element having a light emission peak wavelength in a range of 380 nm or more and 500 nm or less, and a wavelength converting member including a ceramic composite including an inorganic fluorescent material having a light emission peak wavelength in a range of 510 nm or more and 570 nm or less and an inorganic oxide, and a translucent thin film having a physical film thickness in a range of 82 nm or more and 140 nm or less and a refractive index smaller than the refractive index of the ceramic composite, disposed on a light emission side of the ceramic composite, the translucent thin film including a fluoride containing at least one kind of an element selected from the group consisting of an alkali metal element, an alkaline earth metal element, and a Group 13 metal element.