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:
Feb. 03, 2015
Filed:
Jun. 13, 2012
Applicants:
Shoji Kogo, Hino, JP;
Yasushi Yamamoto, Kishiwada, JP;
Kana Inoue, Osaka, JP;
Inventors:
Assignee:
Konica Minolta Advanced Layers, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 9/60 (2006.01); G02B 15/14 (2006.01); G02B 15/173 (2006.01); G02B 27/64 (2006.01);
U.S. Cl.
CPC ...
G02B 15/173 (2013.01); G02B 27/646 (2013.01); G02B 9/60 (2013.01);
Abstract
A large aperture zoom optical system and an image pickup apparatus have a five-lens-group arrangement of positive-negative-positive-negative-positive refractive powers. At the time of zooming, the fifth lens group is fixed, and at least the second lens group, the third lens group and the fourth lens group are moved. The third lens group for use in focusing is composed of a single lens element.