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. 06, 2009
Filed:
May. 06, 2008
Masaru Morooka, Akishima, JP;
Hideyuki Nagaoka, Hino, JP;
Eiji Shirota, Hino, JP;
Masahiro Katakura, Hino, JP;
Masaru Morooka, Akishima, JP;
Hideyuki Nagaoka, Hino, JP;
Eiji Shirota, Hino, JP;
Masahiro Katakura, Hino, JP;
Olympus Imaging Corp., Tokyo, JP;
Abstract
An image pickup apparatus having a wide angle zoom lens system includes a zoom lens system, and an image pickup element which is disposed at an image side of the zoom lens system. The zoom lens system includes in order from an object side thereof, a first lens unit Ghaving a positive refracting power, a second lens unit Ghaving a negative refracting power, a third lens unit Ghaving a positive refracting power, a fourth lens unit Ghaving a positive refracting power, and an aperture stop S which is disposed between the second lens unit Gand the third lens unit G. A zooming is carried out from a wide angle end to a telephoto end by fixing a position of the first lens unit, and changing a distance between the lens units by moving at least the second lens unit Gand the third lens unit G, and the following conditional expressions are satisfied.33°<tan()  (1)3<<5  (2).