Light amount adjusting apparatus, lens barrel, and imaging apparatus

Patent metadata

Field	Value
Publication number	US-9104088-B2
Application number	US-201414168728-A
Country	US
Kind code	B2
Filing date	Jan 30, 2014
Priority date	Jan 30, 2013
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

Provided is a light amount adjusting apparatus wherein a base member has a plurality of supporting parts for supporting the plurality of light amount adjusting blades and a second contact part is located outside a circle extending through the plurality of supporting parts, wherein a contact part between the second contact part and a first contact part is constituted at the other surface of the base member with respect to a surface having a jointing part between a blade driving member and the base member, and wherein, when the blade driving member is pivoted in the circumferential direction of an opening, a part of the blade driving member overlaps at least one of the supporting parts for supporting the light amount adjusting blades at a position offset in a direction parallel to the center axis of the opening.

First claim

What is claimed is:

1. A light amount adjusting apparatus comprising:
a base member having an opening formed therein;
a blade driving member that has a first contact part configured to transmit a driving force and a plurality of first blade engaging parts formed around the circumference of the opening, the blade driving member pivotally engaging relative to the base member in the circumferential direction of the opening; and
a plurality of light amount adjusting blades arrange…

Assignees

• Canon Kk

Inventors

• Sato Katsuhiko

Classifications

• G03B9/06 Primary

  Physics · mapped topic