Photography – With exposure objective focusing means – focusing aid – or... – Lens drive circuit or motor structure
Reexamination Certificate
2008-02-11
2011-12-06
Perkey, W.B. (Department: 2862)
Photography
With exposure objective focusing means, focusing aid, or...
Lens drive circuit or motor structure
Reexamination Certificate
active
08073320
ABSTRACT:
A miniature camera lens actuation apparatus provides an auto-macro function in which a camera lens element has two focus positions. In one type of apparatus, a shape memory alloy actuator arranged to drive movement of the camera lens element relative to a support structure against an end-stop arranged to limit the movement. The shape memory alloy actuator is connected to one of the movable element and the support structure by a compliant connector. This limits the stresses on the shape memory alloy actuator and therefore increases its lifetime. In another type of apparatus, the suspension system supporting the movable element on the support structure provides the movable element with two stable positions along the movement direction.
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Written Opinion of the International Searching Authority for PCT/GB2008/000477, mailed Jun. 6, 2008.
Hooley Anthony
Makino Shinichi
Topliss Richard
Webber Dominic George
Cambridge Mechatronics Limited
Nixon & Vanderhye P.C.
Perkey W.B.
Phan Minh
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