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. 30, 2022
Filed:
May. 26, 2021
Nichia Corporation, Anan, JP;
Toshinobu Katsumata, Fujiyoshida, JP;
Toshiyuki Hashimoto, Anan, JP;
Naoya Kashiwagi, Tokushima, JP;
NICHIA CORPORATION, Anan, JP;
Abstract
A planar light source includes an irregular-shaped mounting substrate, light sources arranged along first and second directions in a plan view, and a light diffusion plate including a thick plate portion and a thin plate portion outward of outermost light sources in the plan view. In the first direction, a distance between an optical axis of one first distal-end light source of one array and an outer edge of the light diffusion plate is greater than a distance between that of another first distal-end light source of another array and the outer edge. In a plan view, the thin plate portion has a width along a straight line along the first direction from the optical axis of the one first distal-end light source toward the outer edge greater than a width along a straight line from the optical axis of the second distal-end light source toward the outer edge.