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:
Aug. 10, 2010
Filed:
Jan. 16, 2009
Applicant:
Hiroshi Endo, Utsunomiya, JP;
Inventor:
Hiroshi Endo, Utsunomiya, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A zoom lens includes a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a rear unit including one or more lens units, which are arranged in order from the object side to the image side. The zoom lens performs zooming by changing distances between the first, second, and rear lens units. A first focusing unit and a second focusing unit which move independently of each other during focusing are provided. The first and second focusing units are adequately set.