| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens drive linear actuator that can detect a position in an optical axis direction of a lens frame, and can perform a precise drive control of the lens frame.SOLUTION: An actuator has: a base 11; a lens frame 12; and two drive units. The drive unit has yokes 21 and 22, a magnet part 24 and hole elements 31 and 32 fixedly provided in the base 11, and has the lens frame 12 movable relative to the base 11, and a coil part 27. The yoke 21 on a side of the lens frame 12 of the magnet part 24 has a notch hole 21a for transmitting a magnetic flux entering into the hole elements 31 and 32.SELECTED DRAWING: Figure 3 |
