Vibration reduction apparatus with a center of gravity adjusting member to reduce detection errors and optical apparatus
US8446672B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 2008 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Jun 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2217/005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vibration reduction apparatus to stably control the driving of a vibration reduction optical system. A vibration reduction apparatus 30 has a fixed portion 31, a moving portion 25, 32, 34-1, 35-1 having a vibration reduction optical system 25 and moves in a plane perpendicular to an optical axis, relatively with respect to the fixed portion, a first detection portion 35 detects relative movement in a first direction D1 of the moving portion and the fixed portion, a second detection portion detects relative movement in a second direction D2 of the moving portion and the fixed portion, and a center of gravity adjusting member 36 disposed at the moving portion such that a center of gravity position G1 of the moving portion can be brought close to a crossing point C of each detection direction of the first detection portion and the second detection portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.