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:
Dec. 16, 2014
Filed:
Apr. 22, 2011
Eiichi Sato, Hachioji, JP;
Hiroyasu Sato, Hachioji, JP;
Rihito Sato, Hachioji, JP;
Opto Design, Inc., , JP;
Abstract
[Purpose] To provide a surface illumination fixture using a point light source having strong directivity. [Constitution] In the surface illumination fixtureincluding a surface illumination light-source deviceconverting light from a plurality of point light sourceshaving strong directivity into surface illumination and an illumination fixture main body, the surface illumination light-source deviceincludes a casinghaving a flat plate partbeing used to attach the surface illumination light-source device to the illumination fixture main body, lateral plate parts standing from the flat plate part, and an opening on a surface opposite to the flat plate part, and includes a light-guide reflection plate covering the opening. The flat plate part, the lateral plate partsand, and the light-guide reflection plateare formed by members having a high light reflectance and a low light transmittance. The light-guide reflection plateis formed to have a lower light reflectance and a higher light transmittance as the distance from the corresponding point light source increases. The illumination fixture main bodyhaving attaching means for attachment to a ceiling or a wall.