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:
Nov. 21, 2006
Filed:
Aug. 15, 2003
Applicants:
Hiroki Matsumoto, Kanagawa, JP;
Tomoyoshi Yamashita, Kanagawa, JP;
Inventors:
Hiroki Matsumoto, Kanagawa, JP;
Tomoyoshi Yamashita, Kanagawa, JP;
Assignee:
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/10 (2006.01); F21V 7/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light guide () for guiding light emitted from a primary light source (), having a light incident face () which light emitted from the primary light source () enters and a light emitting face () from which the guided light is emitted. The light emitting face () is uneven surface having a large number of micro convex curved surface areas. The average slant angle θa is 0.3° to 30°. The ten-point average roughness Rz is 0.7 μm to 10 μm. A light deflector () composed of a prism sheet is disposed beside the light emitting face ().