A drive apparatus having: a shape memory alloy having a property such that a temperature transformation sensitivity in a temperature range from a starting point of austenite transformation (As) at a predetermined stress to an end point of austenite (Af) is higher than a temperature transformation sensitivity...http://www.google.es/patents/US7688533?utm_source=gb-gplus-sharePatente US7688533 - Drive apparatus and lens drive apparatus
