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:
Oct. 20, 2009
Filed:
Apr. 23, 2007
Applicants:
Kenji Saitoh, Atsugi, JP;
Hiroshi Yoshikawa, Kawasaki, JP;
Kenichi Saito, Tokyo, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/232 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is an image pickup optical system capable of performing focusing in a wide region without a large increase in tilt angle in the case where an image of an object is picked up from a low angle. The image pickup optical system includes a first optical system and a second optical system, for enlarging an image formed by the first optical system and forming the enlarged image. A principal plane of the first optical system is tilted relative to an image plane of the second optical system.