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. 06, 2008
Filed:
Nov. 06, 2006
Genta Yagyu, Nishinomiya, JP;
Tetsuo Kohno, Suita, JP;
Shinji Yamaguchi, Osaka, JP;
Konica Minolta Photot Imaging, Inc., Tokyo, JP;
Abstract
A compact bent zooming imaging optical system characterized by sufficient aberration correction. The imagining optical system contains, in order from the object, a first lens group having positive refractive power, a second lens group with negative power which has a reflective optical element for bending the optical axis and lenses on each of the object side and the image side of the reflective optical element, and a following lens group. At least the aforementioned first lens group and following lens group are moved to change in the magnification. −0.6<φ1/φ2<−0.15 is satisfied wherein φ1 denotes the refractive power of the first lens group and φ2 indicates the refractive power of the second lens group.