| 摘要 |
PROBLEM TO BE SOLVED: To provide an actuator apparatus for raising responsiveness when moving a movable lens frame forward or rearward concerning a zooming function, etc., so as to change an optical characteristic, obtaining coincidence with the optical characteristic set in an image pickup unit, and stably and reliably moving the movable lens forward or rearward. SOLUTION: An actuator apparatus 62 includes a movable body 32 that is arranged so as to be movable forward or rearward, and a shape memory alloy wire 56 that is provided directly or indirectly to the movable body so as to enter a non-tension state at an ordinary temperature and is subjected to expansion/contraction control in which an electric current is applied thereto from a power supply portion of an external control circuit portion 100 to change a temperature thereof to a predetermined temperature. COPYRIGHT: (C)2010,JPO&INPIT |
