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. 14, 2014
Filed:
Sep. 14, 2012
Shuichi Idera, Kawasaki, JP;
Shuichi Idera, Kawasaki, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
An image pickup apparatus which can provide a rotational operation member around a lens barrel formed with a bayonet coupling section without increasing the apparatus size. Three female pawl grooves and three open grooves are formed in a mount base. A first ring member is formed with three male pawl portions for being engaged with the female pawl grooves and open grooves. An operation ring member is rotationally operated, and a second ring member rotates in unison therewith. Photo reflectors detect rotation of the second ring member. A restriction unit restricts rotation of the first ring member when the mount base and the operation ring member are bayonet-coupled. A rotation locking member restricts rotation of the operation ring member and the second ring member with respect to the first ring member in accordance with an operation for releasing rotation restriction of the first ring member.