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. 17, 2015
Filed:
Mar. 11, 2014
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Yasushi Hattori, Kanagawa, JP;
Masahiro Kato, Kanagawa, JP;
Yumi Fukuda, Tokyo, JP;
Iwao Mitsuishi, Tokyo, JP;
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Abstract
A light emitting device according to embodiments includes a light emitting element emitting light having a peak wavelength of 425 nm or more and 465 nm or less, a first phosphor emitting light having a peak wavelength of 485 nm or more and 530 nm or less, a second phosphor emitting light having a peak wavelength longer than that of the first phosphor, and a third phosphor emitting light having a peak wavelength longer than that of the second phosphor. Then, when the peak wavelength of the light emitting element is λ(nm) and the peak wavelength of the first phosphor is λ(nm), a relation of 30≦λ−λ≦70 is satisfied.