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. 10, 2006
Filed:
Jul. 30, 2004
Atsushi Koyama, Tochigi, JP;
Masahisa Tamura, Tochigi, JP;
Jun Sugita, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An interchangeable lens is disclosed which prevents the camera body and interchangeable lens from being damaged even if an attempt is made to erroneously mount therebetween. The interchangeable lens is a second interchangeable lens whose flange back is the same as that of a first interchangeable lens and includes a protruding portion protruding from a mount reference surface. The protruding amount of the protruding portion is set when the second interchangeable lens has a specific phase relationship with a first camera, so that the protruding portion contacts a first wall portion of the first camera, and is set when the second interchangeable lens has a phase relationship with the first camera other than the specific phase relationship and a bayonet lug of the second interchangeable lens contacts a bayonet lug of the first camera, so that the protruding portion is away from the first wall portion.