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:
Jun. 05, 2007
Filed:
Apr. 22, 2003
Yasuko Hayashi, Kanagawa, JP;
Tomoyoshi Yamashita, Kanagawa, JP;
Yasuko Hayashi, Kanagawa, JP;
Tomoyoshi Yamashita, Kanagawa, JP;
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Abstract
A light guide which guides light emitted from an LED includes a light incident end surface for receiving light, a light outputting surface for outputting a guided light, and a lens forming surface that has a plurality of elongated lenses arranged in parallel to each other and formed along the directivity of light incident from the LED, such that a plurality of micro regions are defined over the plurality of elongated lens. In the vicinity of the LED, a distribution of micro regions having an inclination angle between 20° and 50° is at least 10% over all micro regions. A light deflection element disposed adjacent to the light guide light outputting surface includes a light entrance surface having a plurality of lenses formed thereon that are parallel to each other and extend in a direction parallel to the light guide light incident end surface.