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:
Jan. 10, 2006
Filed:
Oct. 14, 2003
Applicants:
Michio Inoue, Saitama, JP;
Makoto Araoka, Saitama, JP;
Inventors:
Michio Inoue, Saitama, JP;
Makoto Araoka, Saitama, JP;
Assignee:
Tamron Co., Ltd., Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 9/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
Diaphragm blades move in a direction approaching to or separated from an optical axis of an incident light at the time of operation. Opening edges of the diaphragm blades are provided with neutral density (ND) filters having a predetermined transmittance to pass the incident light. Edges of the ND filters are provided with inclined surfaces having a predetermined angle with respect to the optical axis. With this configuration, flare is suppressed and image quality is enhanced.