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:
Mar. 18, 2003
Filed:
Oct. 20, 2000
Toshiaki Edamitsu, Chiba, JP;
Yusuke Nanjo, Kanagawa, JP;
Keisuke Ikegami, Chiba, JP;
Yuichi Nakano, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
An imaging apparatus with an exposure controlling mechanism being made to define an iris aperture by moving iris blades on surfaces perpendicular to an optical axis, wherein the exposure controlling mechanism includes a first iris blade to which a first ND filter having at least two levels of transmissivity is attached, a second iris blade to which no ND filter is attached, and a third iris blade to which a second ND filter having a single transmissivity is attached, and the first to the third iris blades are made to differ respectively in amounts and phases of their displacements caused by an operation of a driving means.