Zoom optical system with a vibration correction function and imaging device using the zoom optical system
US7068429B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2006 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Jan 11, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A zoom optical system with a vibration correction function includes, from the object side, a first lens group having positive refractive power and that is stationary during zooming, a second lens group having negative refractive power and that moves along the optical axis during zooming, a third lens group having positive refractive power that includes a stop, and a fourth lens group having positive refractive power. Two of the second, third, and fourth lens groups move along the optical axis during zooming. A fifth lens group may be included. At least part of one of the third, fourth, or fifth lens groups that does not move along the optical axis during zooming is movable in a direction that intersects the optical axis in order to correct for blurring of an image due to vibration of the zoom optical system. An imaging device uses the zoom optical system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.