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. 10, 2015
Filed:
Sep. 22, 2011
Applicants:
Makoto Iikawa, Saitama, JP;
Ichiro Imaei, Tokyo, JP;
Inventors:
Makoto Iikawa, Saitama, JP;
Ichiro Imaei, Tokyo, JP;
Assignee:
Pentax Ricoh Imaging Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 7/10 (2006.01); G02B 13/00 (2006.01); G02B 15/177 (2006.01); G02B 7/04 (2006.01); G02B 7/02 (2006.01);
U.S. Cl.
CPC ...
G02B 7/10 (2013.01); G02B 13/009 (2013.01); G02B 15/177 (2013.01); G02B 7/04 (2013.01); G02B 7/02 (2013.01);
Abstract
A varifocal lens barrel includes a plurality of lens groups, each of which are linearly movable in the optical axis direction thereof without rotating about the optical axis during a zooming operation and during a focusing operation, including a base barrel which is linearly movable in the optical axis direction by rotation of a zoom operational ring, wherein lens frames of the respective lens groups are each supported by the base barrel.