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:
Nov. 01, 2022
Filed:
Jul. 30, 2020
Applicant:
Nichia Corporation, Anan, JP;
Inventors:
Chihiro Yamada, Anan, JP;
Daisuke Iwakura, Komatsushima, JP;
Assignee:
Nichia Corporation, Anan, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/50 (2010.01); H04N 5/33 (2006.01); H04N 5/225 (2006.01); H01L 33/00 (2010.01);
U.S. Cl.
CPC ...
H01L 33/504 (2013.01); H01L 33/0075 (2013.01); H04N 5/2256 (2013.01); H04N 5/33 (2013.01);
Abstract
A illumination device comprises an excitation light source, a first fluorescent material that converts the wavelength of light emitted from the excitation light source and emits light having a light emission peak wavelength in a range of 780 nm or more and 1,600 nm or less, and a cut filter that blocks light in a wavelength range of 870 nm or less, wherein the first fluorescent material contains a fluorescent material having a composition of rare earth aluminate containing Ce and Nd.