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:
Mar. 18, 2014
Filed:
Dec. 25, 2009
Kenji Yagi, Yokohama, JP;
Tadashi Suga, Tokyo, JP;
Masafumi Kitamura, Otake, JP;
Satoshi Miyadera, Yokohama, JP;
Takeo Ookura, Yokohama, JP;
Tetsuya Suda, Yokohama, JP;
Kenji Yagi, Yokohama, JP;
Tadashi Suga, Tokyo, JP;
Masafumi Kitamura, Otake, JP;
Satoshi Miyadera, Yokohama, JP;
Takeo Ookura, Yokohama, JP;
Tetsuya Suda, Yokohama, JP;
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Abstract
A light guide for a light source device includes a core layer which is formed from a transparent resin and has a refractive index nand cladding layers which are provided on both surfaces thereof and have a refractive index nwhich is lower than the refractive index nof the core layer. A light reflecting layer which scatters and reflects light is provided in the front surface of one cladding layer, the front surface of the other cladding layer is set as a light emitting face, and a recess is provided which reaches from at least one of either of the front surface of the one cladding layer or the front surface of the other cladding layer to the core layer passing through the cladding layer.