To provide an actuator for moving a movable part in a wide range, when image blur prevention control is not enabled, without reducing the accuracy of the image blur prevention control.
The actuator (10) for preventing image blur by moving an imaging lens (16) includes: a fixed part (12); the movable part (14); a movable part supporting means (18) supporting the movable part; a driving means for moving the movable part; a position detecting means (24) detecting the position of the movable part; a signal processing means (46) converting a positional signal into a predetermined magnification positional signal; an A-D converter for a position (48) converting the converted positional signal into a digital signal; and a control means (36) moving the movable part by controlling the driving means, based on the produced digital signal. The signal processing means converts the positional signal to have a different magnification between, in the image blur prevention control where the movable part is translationally moved and in rotation control where the movable part is rotationally moved.
COPYRIGHT: (C)2009,JPO&INPIT
| JP2006106177A | ||||
| JP2005292797A |
Fumiaki Otsuka
Shishido Kaichi
Disciple Maru Ken
Ino Sato
Makoto Watanabe