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. 14, 2009
Filed:
Mar. 01, 2005
Applicant:
Eui-kuen OH, Suwon-si, KR;
Inventor:
Eui-kuen Oh, Suwon-si, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Primary Examiner:
Int. Cl.
CPC ...
G03B 9/02 (2006.01); G03B 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An iris diaphragm device has at least one lens shutter for adjusting the size of an aperture through which incident light passes. At least one ND filter is installed to move independently of the lens shutter, and reduces the amount of incident light by covering the aperture stopped down by the lens shutter.