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:
Apr. 30, 2024
Filed:
Nov. 19, 2019
Mitsubishi Electric Corporation, Tokyo, JP;
Masashi Fujita, Tokyo, JP;
Kazumasa Kawase, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
Provided are a light diffuser in which the brightness or hue in an emission surface of the light diffuser is controlled, a lighting device, and a method of manufacturing such a light diffuser. A light diffuser () includes: an incident surface () to receive first light (Li); a light scattering portion () that includes light scattering particles () present in a medium () and generates scattered light by guiding the received first light and scattering the received first light with the light scattering particles; and an emission surface () to emit the scattered light, wherein a concentration of the light scattering particles in the light scattering portion is distributed such that the concentration increases non-linearly and continuously or discontinuously with distance from an incident edge in a light guiding direction of the first light in the light scattering portion.