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. 01, 2014
Filed:
Apr. 05, 2012
Applicants:
Teppei Okuyama, Tokyo, JP;
Akihiko Obama, Tokyo, JP;
Inventors:
Teppei Okuyama, Tokyo, JP;
Akihiko Obama, Tokyo, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
At the inside wall face of the first tube portionof the lens barrel, the shielding grooveshaving a saw blade shape are formed along the optical axis O, and each shielding grooveat least comprises the first inclined facefacing the image side, and the second inclined facefacing the object side, further the groove widths of the shielding grooveis constituted so that they changes in steps or continuously as getting closer to the second lens groupfrom the object side.