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:
Oct. 18, 2022
Filed:
Jul. 11, 2019
Asahi Rubber Inc., Saitama, JP;
National University Corporation Saitama University, Saitama, JP;
Naoya Mashiko, Saitama, JP;
Takashi Kanahira, Saitama, JP;
Masutsugu Tasaki, Saitama, JP;
Eiji Ishiguro, Saitama, JP;
Keiichi Watanuki, Saitama, JP;
Keiichi Muramatsu, Saitama, JP;
Kazunori Kaede, Saitama, JP;
ASAHI RUBBER INC., Saitama, JP;
NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY, Saitama, JP;
Abstract
A light source that emits light, wherein, in coordinates in a CIE 1931 chromaticity diagram, the light has a color purity included in a region of 2 to 50 in a region surrounded by a line segment WB and a line segment WG that connect coordinates W (0.33, 0.33) indicating an achromatic color with coordinates B (0.091, 0.133) of 480 nm and coordinates G (0.373, 0.624) of 560 nm on a spectral locus, and the spectral locus, and has an area occupied by a continuous spectral wavelength in a wavelength region of 480 to 540 nm, of 15% or more relative to an area of an overall spectral wavelength of the light source at 380 to 780 nm.