Camera with a shape memory alloy member
AssigneeKonica Corporation
InventorTetsuji Emura
Life of this patent
Estimating the term…
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.
Claims10
A camera for exposing a photographic film comprising;
- a lens for forming an image on said photographic film;
- a diaphragm for adjusting an exposure amount of said image;
- shape memory alloy members, including a first shape memory alloy member and a second shape memory alloy member, for controlling said diaphragm so as to adjust said exposure amount of said image, wherein said shape memory alloy members are movable between a first position in which the shape of said shape memory alloy members is recovered by heating, and a second position wherein said shape memory alloy member is deformed, said first shape memory alloy member being in said first position when said second shape memory alloy member is in said second position, and said first shape memory alloy member being in said second position when said second memory alloy member is in said first position;
- and
- an actuating member for heating one of said shape memory alloy members to displace said one of said shape memory alloy members from said first position to control said diaphragm.
Dependencies are inferred from the claim text.