Blur prevention device for preventing image blur
US5715479A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1995 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Nov 7, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2205/0053
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A blur prevention device is equipped with first and second drive units which can move a blur prevention lens in a plane orthogonal to an optical axis of a main optical system. First and second transfer units transfer the amount of movement of the drive units to the blur prevention lens and first and second transfer receiving units receive the amount of movement in the respective directions from the respective transfer units. Each of the transfer receiving units can move relative to the one transfer unit other than the respective transfer unit. The blur prevention device has a specified direction for one of the transfer units and allows a degree of freedom outside the movement in the specified direction to the other transfer unit. Restriction gears, which are part of the drive units, restrict the amount of movement of the blur prevention lens in the plane orthogonal to the optical axis. And, by integrating a lens shutter or aperture with the blur prevention device, the blur prevention lens may be easily positioned in a central position of its drive range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.