Camera with a shape memory alloy member
US5459544A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 1994 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Jan 25, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera for exposing photosensitive medium such as a film and a CCD. The camera includes: a lens system for forming a light image on the photosensitive medium; a portion of the camera which requires a control mechanism for a better result of exposing such as an aperture control, an exposure control, a zooming control, and a shutter control; and a driver means for driving such the control mechanism. The driver includes a shape memory alloy member having a first position where said shape memory alloy member is recovered, and a second position where said shape memory alloy member is deformed; and an alloy driving circuit for actuating the shape memory alloy member to the first position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.