Shake preventing apparatus
US5659806A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1994 |
| Grant date | Aug 19, 1997 |
| Priority date | — |
| Expiry date | Oct 3, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2217/005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A shake preventing apparatus comprises a shaking sensor for detecting a shake, a shaking preventive optical system for preventing an image shake by this optical system being shifted in a direction substantially orthogonal to an optical axis of a principal optical system, motors for driving this shaking preventive optical system to prevent the shake detected by the shaking sensor, photo interrupters for detecting a shift position of the shaking preventive optical system and a control circuit for controlling the motors on the basis of detection signals from the photo interrupters. The photo interrupters are disposed within a range so as not to exceed a thickness of the shaking preventive optical system in an optical-axis direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.