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:
Apr. 05, 2011
Filed:
Feb. 22, 2008
Toshimitsu Fujiwara, Kusatsu, JP;
Atsushi Sawada, Ritto, JP;
Kosuke Sanari, Kusatsu, JP;
Yusuke Akioka, Kyoto, JP;
Toshimitsu Fujiwara, Kusatsu, JP;
Atsushi Sawada, Ritto, JP;
Kosuke Sanari, Kusatsu, JP;
Yusuke Akioka, Kyoto, JP;
OMRON Corporation, Kyoto-shi, Kyoto, JP;
Abstract
An aspect of the present invention provides a compact light guide device and a light guide apparatus having high productivity and an even light emission property. A light guide device is made of a translucent material, and LED is disposed in a notch step portion formed by cutting at least a part of an inner peripheral surface, thereby guiding light from LED to emit the light to the outside. Particularly, in a surface and a backside of a sidewall portion of the notch step portion, the sidewall portion facing a light-emitting portion of the light-emitting element, at least an inward surface constitutes a reflecting surface diffusing the light, and a pair of facing surface adjacent to each other on both sides of the sidewall portion constitutes a light acceptance surface receiving the light reflected from the reflecting surface.