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. 03, 2002
Filed:
Jun. 26, 1996
Applicant:
Inventors:
Kenji Kyuma, Saitama-ken, JP;
Hiroto Ohkawara, Ibaraki-ken, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 1/700 ;
U.S. Cl.
CPC ...
G03B 1/700 ;
Abstract
In an interchangeable-lens type camera to which a lens unit is removably secured, information relative to the amount of variation per unit time of the focal length of the magnification varying lens of the lens unit is transmitted from the lens unit to a camera-body side, and zoom control is performed on the camera-body side on the basis of such information.