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. 20, 1999
Filed:
Dec. 09, 1997
Masahiro Oono, Saitama-ken, JP;
Hisao Iwanade, Tokyo, JP;
Noboru Saitoh, Saitama-ken, JP;
Koji Sato, Saitama-ken, JP;
Sukenori Shiba, Saitama-ken, JP;
Tatsuya Yoshida, Saitama-ken, JP;
Nobuyuki Nagai, Saitama-ken, JP;
Asahi Kogaku Kabushiki Kaisha, Tokyo, JP;
Abstract
A motor-driven diaphragm apparatus for a lens barrel having a plurality of lens groups and a diaphragm mechanism, in which a diaphragm block provided with a plurality of diaphragm blades and a diaphragm-opening-and-closing ring which opens and closes an aperture defined by the diaphragm blades, is integrally provided with a diaphragm-opening-and-closing arm that projects from the diaphragm block and that is provided with a radial association groove for the diaphragm-opening-and-closing ring. Also provided are front and rear lens barrel blocks which support the lens groups, wherein said diaphragm block is held between the front and rear lens barrel blocks so that the diaphragm-opening-and-closing arm and the association groove project outwardly.