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:
Jun. 29, 2021
Filed:
Feb. 20, 2020
Sharp Kabushiki Kaisha, Sakai, JP;
Hidekazu Miyata, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
A lighting device includes a light source emitting primary light rays that are included in a certain wavelength region, a wavelength conversion member, and a reflection layer. The wavelength conversion member has a function of converting some of the primary light rays that have passed through the wavelength conversion member into secondary light rays that are included in another wavelength region that is different from the certain wavelength region. The reflection layer has a function of reflecting light rays that reach a first surface on an opposite side from the light source. The reflection layer includes a light transmission section in a portion thereof, and light rays that reach a second surface on a light source side pass through the light transmission section to the first surface at a higher ratio than other section of the reflection layer.