Zoom lens system, optical apparatus and method for manufacturing zoom lens system
US8605362B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2011 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Feb 24, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/646
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A zoom lens system includes, in order from an object side: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; a fourth lens group having negative refractive power; and a fifth lens group having positive refractive power. Upon zooming from a wide-angle end state to a telephoto end state, a position of the first lens group is fixed. At least a portion of any one of the lens groups is moved in a direction including a component perpendicular to an optical axis, and a given conditional expression is satisfied, thereby providing a zoom lens system capable of excellently suppressing variation in aberrations upon zooming and upon correcting an image blur, an optical apparatus including the zoom lens system, and a method for manufacturing the zoom lens system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.