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:
Jul. 14, 2026
Filed:
Oct. 18, 2023
Stanley Electric Co., Ltd., Tokyo, JP;
STANLEY ELECTRIC CO., LTD., Tokyo, JP;
Abstract
A light guide plate has a light distribution controlling surface. A concave pseudo half-spindle type reflection dot is provided in the light distribution controlling surface. The pseudo half-spindle type reflection dot includes a first curved sloped surface provided on a side of the light incident surface, and a second curved sloped surface provided on a side of the counter light incident surface against the first curved sloped surface and coupled to the first curved sloped surface. The first curved sloped surface forms a first circular arc shape viewed from the light distribution controlling surface. The second curved sloped surface forms a second circular arc shape viewed from the light distribution controlling surface. The first curved sloped surface forms a third circular arc shape viewed from the light incident surface. And the second curved sloped surface forms the third circular arc shape viewed from the counter light incident surface.