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:
Jul. 08, 2014
Filed:
Jul. 05, 2012
Yosuke Fukai, Kawasaki, JP;
Yosuke Fukai, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A lens barrel which can be extended over a larger amount without increasing the length of the lens barrel in a collapsed state. A movable barrel having a cam formed on an inner periphery thereof is movable in an optical axis direction. The movable barrel is extended toward an object in a shooting state, and is housed in a collapsed state. A lens holding frame holds a first lens group disposed closest to an object side of lens groups arranged in the optical axis direction. The lens holding frame including a fitting portion for slidably fitting to the cam is capable of moving in the optical axis direction, following a profile line of the cam. Barrier blades are disposed on the object side of the first lens group. A barrier drive ring is connected to the lens holding frame is rotatable to open and close the barrier blades.