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:
May. 07, 2019
Filed:
Dec. 05, 2017
Mitsubishi Electric Corporation, Tokyo, JP;
Hideyuki Murai, Tokyo, JP;
Masaaki Takeshima, Tokyo, JP;
Kengo Nishikawa, Tokyo, JP;
Nobuhiro Miura, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A surface light source device includes: a plurality of LEDs emitting a light; a substrate having the plurality of LEDs mounted thereon; a light distribution control element arranged on the substrate, and distributing the light emitted from the plurality of LEDs; a reflection sheet reflecting a part of the light distributed by the light distribution control element to a display surface side of the surface light source device; a housing accommodating the plurality of LEDs, the substrate, the light distribution control element, and the reflection sheet; and a retaining member retaining the light distribution control element and the substrate under a state in which the retaining member is in contact with a surface of the light distribution control element that is opposite to a surface of the light distribution control element in contact with the substrate.