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, 2008
Filed:
Oct. 29, 2004
Yoshinari Kawashima, Kanagawa, JP;
Youhei Yamazaki, Chiba, JP;
Nobuo Suematsu, Tokyo, JP;
Shiro Sugawara, Kanagawa, JP;
Nobuaki Kuribara, Saitama, JP;
Akira Koshimura, Saitama, JP;
Yoshinari Kawashima, Kanagawa, JP;
Youhei Yamazaki, Chiba, JP;
Nobuo Suematsu, Tokyo, JP;
Shiro Sugawara, Kanagawa, JP;
Nobuaki Kuribara, Saitama, JP;
Akira Koshimura, Saitama, JP;
Sony Corporation, Tokyo, JP;
Abstract
A light guiding plate includes: an X axis direction light distribution control section; and a diffuse reflection section. The X axis direction light distribution control section performs light distribution control by which the incident light is deflected such that a tilt of an X axis direction with respect to a normal direction approaches to zero, and outputted from the light emitting surface. A direction of the incident light is the X axis direction, a direction orthogonal to the X axis direction and parallel to the light emitting surface is a Y axis direction, and a direction vertical to the X axis direction and the Y axis direction is the normal direction. The diffuse reflection section reflects the guided incident light from the light incident surface to diffuse in the Y axis direction inside of the light guiding plate and guides to the X axis direction light distribution control section.