发明授权
- 专利标题: Shape memory alloy actuation apparatus
- 专利标题(中): 形状记忆合金致动装置
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申请号: US12525909申请日: 2008-02-11
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公开(公告)号: US08073320B2公开(公告)日: 2011-12-06
- 发明人: Richard Topliss , Shinichi Makino , Anthony Hooley , Dominic George Webber
- 申请人: Richard Topliss , Shinichi Makino , Anthony Hooley , Dominic George Webber
- 申请人地址: GB Cambridge
- 专利权人: Cambridge Mechatronics Limited
- 当前专利权人: Cambridge Mechatronics Limited
- 当前专利权人地址: GB Cambridge
- 代理机构: Nixon & Vanderhye P.C.
- 优先权: GB0702677.6 20070212; GB0709229.9 20070514; GB0714128.6 20070719
- 国际申请: PCT/GB2008/000477 WO 20080211
- 国际公布: WO2008/099155 WO 20080821
- 主分类号: G03B3/10
- IPC分类号: G03B3/10
摘要:
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.
公开/授权文献
- US20100074607A1 SHAPE MEMORY ALLOY ACTUATION APPARATUS 公开/授权日:2010-03-25
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