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:
Sep. 09, 2008
Filed:
Mar. 01, 2006
Yoshiharu Tenmyo, Yokohama, JP;
Yoshiharu Tenmyo, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A light-emitting device is disclosed which enables efficient use of luminous flux and achieves a desired light emission characteristic. The light-emitting device has an optical member which has an emergence surface and a plurality of optical portions, each of the optical portions including a first surface which directs light incident thereon to the emergence surface. The plurality of first surfaces are inclined on the same side with respect to the emergence surface. The light-emitting device also has a light guiding member which directs light from a light source to the plurality of optical portions from one side of a direction in which the plurality of optical portions are arranged.