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. 17, 2025
Filed:
May. 28, 2024
Nichia Corporation, Anan, JP;
Norimasa Yoshida, Komatsushima, JP;
NICHIA CORPORATION, Anan, JP;
Abstract
An optical member includes: a plurality of light controllers, each including: a first surface, a convex surface that is located opposite to the first surface and is curved in a direction away from the first surface, and a concave surface that opens at the first surface and is curved from the first surface toward the convex surface. A radius of curvature of the concave surface is less than a radius of curvature of the convex surface. In a plan view, a center of the concave surface coincides with a center of the convex surface. A first distance from the first surface to a topmost portion of the convex surface is 4.5 times or more a second distance from the first surface to a deepest portion of the concave surface.