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:
Feb. 01, 2011
Filed:
Oct. 15, 2008
Ryuhei Azuma, Kanagawa, JP;
Atsuya Ishii, Kanagawa, JP;
Kunioki Takahashi, Chiba, JP;
Shinichirou Yamashita, Tokyo, JP;
Kenichi Daikai, Chiba, JP;
Ryuhei Azuma, Kanagawa, JP;
Atsuya Ishii, Kanagawa, JP;
Kunioki Takahashi, Chiba, JP;
Shinichirou Yamashita, Tokyo, JP;
Kenichi Daikai, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
A light amount adjuster for adjusting a size of a diaphragm aperture on an optical axis of an optical system, includes: a pair of straight moving diaphragm blades so provided at a portion to which the diaphragm aperture is opposed as to slide along a plane orthogonal to the optical axis in a direction of getting close to or separated from the optical axis; a pair of swing diaphragm blades so provided at a portion to which the diaphragm aperture is opposed as to swing about a center axis in parallel to the optical axis in a direction of getting close to or separated from the optical axis; and a drive mechanism for adjusting the size of the diaphragm aperture by sliding the pair of straight moving diaphragm blades and by allowing the pair of swing diaphragm blades to swing.