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:
Aug. 27, 2024
Filed:
Jan. 17, 2020
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Ryosuke Shigitani, Osaka, JP;
Shumpei Fujii, Osaka, JP;
Abstract
A lighting device which outputs output light includes: a light source; and an optical member which includes at least one of reflection wavelength selectivity or transmission wavelength selectivity depending on an incidence angle θ of incident light from the light source, wherein the incident light is incident on the optical member at a plurality of different incidence angles θ, the incident light is converted into outgoing light through the optical member, the outgoing light includes reflected light reflected by the optical member and transmitted light transmitted through the optical member, the output light is light based on the outgoing light, and chromaticity of the output light continuously changes on a surface irradiated by the output light.