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:
Sep. 05, 2017
Filed:
May. 19, 2015
Applicant:
Olympus Corporation, Tokyo, JP;
Inventors:
Akinori Nishio, Tokyo, JP;
Masahiro Imamura, Tokyo, JP;
Tomoyuki Satori, Kanagawa, JP;
Koji Nakagawa, Kanagawa, JP;
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/64 (2006.01); G02B 13/04 (2006.01); G02B 27/00 (2006.01); G02B 13/18 (2006.01);
U.S. Cl.
CPC ...
G02B 9/64 (2013.01); G02B 13/04 (2013.01); G02B 13/18 (2013.01); G02B 27/0025 (2013.01);
Abstract
A wide angle lens includes in order from an object side, a front lens unit having a positive refractive power, one focusing lens having a negative refractive power, and a rear lens unit having a positive refractive power, and at the time of focusing, the focusing lens moves on an optical axis, and the following conditional expressions (1) and (2) are satisfied.0.1<<0.5  (1)3.0≦  (2)