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:
Nov. 29, 2016
Filed:
Feb. 10, 2015
Olympus Corporation, Tokyo, JP;
Yasuji Ogata, Tokyo, JP;
Yasuharu Yamada, Kanagawa, JP;
Olympus Corporation, Tokyo, JP;
Abstract
A teleconverter according to the present invention includes a master lens apparatus side mount portion, an image pickup apparatus side mount portion, and a converter lens section having a negative refractive power as a whole. The converter lens section includes in order from an object side to an image side, 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 positive refractive power. The second lens unit is a lens unit in which, three lenses are cemented, and which includes in order from the object side to the image side, a first lens having a negative refractive power, a second lens having a positive refractive power, and a third lens having a negative refractive power. The teleconverter satisfies predetermined conditional expressions.