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:
May. 01, 2012
Filed:
Apr. 13, 2010
Akiyoshi Tochigi, Kokubunji, JP;
Yasutaka Kashiki, Hino, JP;
Eiji Shirota, Hino, JP;
Olympus Imaging Corp., Tokyo, JP;
Abstract
A two-unit zoom lens system which forms an image on an image pickup surface, includes in order from an object side to an image side, a first lens unit Ghaving a negative refracting power and a second lens unit Ghaving a positive refracting power. At the time of zooming from a wide angle end to a telephoto end, a distance between the first lens unit and the second lens unit is narrowed. The first lens unit includes in order from the object side to the image side, a first lens having a negative refracting power, a second lens having a negative refracting power, and a third lens having a positive refracting power, and the two-unit zoom lens system satisfies predetermined conditional expressions.