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. 13, 2010
Filed:
May. 20, 2005
Applicant:
Yoshiharu Tenmyo, Yokohama, JP;
Inventor:
Yoshiharu Tenmyo, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 15/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
An illumination apparatus which can efficiently condense light from a light source such as an LED. The illumination apparatus has a light source and an optical member disposed on the side of light irradiation of the light source. The optical member has an incident surface, an emergent surface having a positive optical power, and a reflecting surface reflecting part of light from the incident surface and leading it to the emergent surface. The reflecting surface is formed further away from an irradiation optical axis than a normal to the emergent surface at a position of the emergent surface closest to the reflecting surface.