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:
Jan. 17, 2017
Filed:
Nov. 20, 2014
Olympus Corporation, Tokyo, JP;
Takashi Fujikura, Tokyo, JP;
Kazuteru Kawamura, Tokyo, JP;
Olympus Corporation, Tokyo, JP;
Abstract
A single focal length lens system includes a front lens unit and a rear lens unit, and does not include any other lens unit. The front lens unit includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit having a negative refractive power. Each of the first lens unit and the second lens unit includes a positive lens and a negative lens, and the first lens unit and the second lens unit do not move all the time. An aperture stop is disposed on the image side of the second lens unit. Any one of the lens units positioned on the image side of the second lens unit is a focusing lens unit, and the following conditional expression (1) is satisfied:0.06<||<0.4  (1)