Image blur suppression device of a camera which aligns an image blur suppression lens and actuator based on anticipated sag of supporting members
US5619293A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1995 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Jun 16, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2205/0069
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image blur suppression device which moves an image blur suppression lens to compensate for image blur, such as in a camera. A supporting member supports the image blur suppression lens and experiences sag due to gravity. The image blur suppression lens is positioned to approximately align the optical center of the image blur suppression lens with the optical axis of a main optical system in accordance with the amount of sag of the supporting member. Also, the image blur suppression lens can be positioned to approximately align the optical center of the image blur suppression lens with the center of the range of motion of the image blur suppression lens in accordance with the amount of sag of the supporting member. Additionally, an actuator can generate a force between a magnet and a coil to move the image blur suppression lens. The image blur suppression lens is positioned to approximately align the magnetic center of the magnet with the center of the winding of the coil in accordance with the amount of sag of the supporting member. Further, a position detecting unit can detect the position of the image blur suppression lens by emitting light from a light emitting unit, through …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.