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:
Oct. 23, 2018
Filed:
Sep. 01, 2015
Applicant:
Olympus Corporation, Tokyo, JP;
Inventors:
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 27/64 (2006.01); G02B 13/02 (2006.01); G02B 27/00 (2006.01); G02B 13/18 (2006.01); G02B 15/173 (2006.01); G02B 7/00 (2006.01); G02B 15/08 (2006.01); G02B 15/14 (2006.01);
U.S. Cl.
CPC ...
G02B 13/02 (2013.01); G02B 7/008 (2013.01); G02B 13/18 (2013.01); G02B 15/08 (2013.01); G02B 15/14 (2013.01); G02B 15/173 (2013.01); G02B 27/0062 (2013.01); G02B 27/646 (2013.01);
Abstract
A telephoto lens includes in order from an object side, a first unit having a positive refractive power, a second unit having a negative refractive power, and a third unit having a positive refractive power, and a focusing from an infinite object point to an object point at a short distance is carried out by moving the second unit toward an image side, and the following conditional expression (17) is satisfied:0.2<<0.32  (17)