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:
Jun. 05, 2018
Filed:
Dec. 19, 2016
Olympus Corporation, Tokyo, JP;
Kazuteru Kawamura, Tokyo, JP;
Kazuyuki Iwasa, Tokyo, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
A plurality of imaging optical systems includes at least two imaging optical systems having different focal lengths. Each imaging optical system includes in order from an object side, a front lens unit having a positive refractive power, a diaphragm member, a focusing lens unit having a negative refractive power, and a rear lens unit. The front lens unit includes one of a positive lens and a negative lens as a common lens, and each of at least two imaging optical systems from among the plurality of imaging optical systems includes at least one common lens. At the time of focusing, only the focusing lens unit moves on an optical axis. Each imaging optical system satisfies the following conditional expression (1), and the plurality of imaging optical systems satisfy the following conditional expression (2).0.06<||<0.4  (1)1.02<<2.50  (2)