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:
May. 20, 2008
Filed:
Jul. 11, 2005
Tomoyuki Kudo, Tokyo, JP;
Tomoyuki Kudo, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Disclosed is a light amount adjusting apparatus for an image pickup apparatus which is capable of reducing the force with which a plate member and a blade member are held in close contact with each other and driving the blade member smoothly even in a high-humidity condition. The light amount adjusting apparatus includes a base platehaving an opening, a blade membermovable within a range including a position where the blade member overlaps the openingin a light axis direction and restricting the amount of light passing through the openingby overlapping the opening, and a plate memberadjacent to the blade memberand having a cut portionat a position where the plate member overlaps the blade memberin the light axis direction in a state in which the blade memberis at a predetermined position.