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. 14, 2003
Filed:
Oct. 27, 2000
Applicant:
Inventors:
Teiji Kohara, Kanagawa-ken, JP;
Yuichiro Konishi, Tokyo, JP;
Junko Maruyama, Kanagawa-ken, JP;
Koji Minami, Kanagawa-ken, JP;
Issei Ishimaru, Kanagawa-ken, JP;
Assignee:
Nippon Zeon Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/10 ;
U.S. Cl.
CPC ...
G02B 6/10 ;
Abstract
A light guide plate which is made of a polymeric resin having an alicyclic structure and has recesses for reflection formed on a light reflecting surface, the recesses being so arranged that the density of the recesses increases with the distance from a light source. Each recess is preferably a V-shaped groove each having an angle of 70° to 150° and a depth of 1 &mgr;m to 1000 &mgr;m or a groove which is long and approximately perpendicular to the direction in which light is incident at any position on the light reflection surface.