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:
Oct. 15, 2013
Filed:
Sep. 12, 2008
Makoto Takamura, Kyoto, JP;
Masashi Tanaka, Kyoto, JP;
Makoto Takamura, Kyoto, JP;
Masashi Tanaka, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
Provided is a lighting device having high luminance in-plane uniformity without a dark part occurring at a connecting part between surface light source panels. The lighting device () is provided with a plurality of surface light source panel (), and a plurality of light diffusion passive reflectors () disposed at the light-emitting side of the surface light source panel (). In the light diffusion passive reflector (), a rectangular-shaped bottom surface is disposed on a light emitting region of the surface light source panel (), and a light-emitting surface () has substantially the same size as a planar outline of the surface light source panel (), and a side surface () is formed to incline diagonally outward towards the light-emitting surface () from the bottom surface. The light diffusion passive reflectors () which are mutually adjoining are disposed to contact with each other without a gap in between, and are disposed so that the light-emitting surface () is continuously arranged.