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. 16, 2020
Filed:
Apr. 24, 2019
Stanley Electric Co., Ltd., Meguro-ku, Tokyo, JP;
Yoji Oki, Tokyo, JP;
Lingwei Goh, Tokyo, JP;
STANLEY ELECTRIC CO., LTD., Tokyo, JP;
Abstract
A side-edge type surface light emitting apparatus includes: a light guide plate having a first light emitting surface, a light distribution controlling surface opposing the first light emitting surface and a light incident surface; a light source disposed on the light incident surface; a first prism sheet having multiple first prisms opposing the first light emitting surface and a second light emitting surface opposing the multiple first prisms; a light absorbing sheet opposing the light distribution controlling surface; and a second prism sheet having a flat surface opposing the light distribution controlling surface and multiple second prisms opposing the light absorbing sheet, the multiple second prisms being perpendicular to the light incident surface of the light guide plate.