Panasonic Corporation

Masaya Watada

Takefumi Inoue

Norifumi Sata

Shinsuke Kimoto

Norifumi c/o Matsushita Electric Industrial Co Ltd Sata

Takefumi c/o Matsushita Electric Industrial Co Ltd Inoue

Shinsuke c/o Matsushita Electric Industrial Co Ltd Kimoto

A lens actuator is provided for moving a movable part including a lens, with respect to a fixed part in the optical axis direction of the lens. The lens actuator includes (a) a magnet disposed on the surface of the movable part facing the fixed part and magnetized in the optical axis direction, (b) a coil disposed on the surface of the fixed part facing the magnet, and (c) a pair of magnetic materials disposed on both sides of the magnet in the optical axis direction, to direct magnetic flux from the magnet toward the coil.

Lens actuator, and electronic device using the same

A lens actuator includes a carrier having a tubular shape having a through-hole provided therein. The through-hole is arranged to mount a lens therein. The lens actuator further includes plural springs contacting upper and lower surfaces of the carrier, a coil fixed to the carrier, a first yoke, a second yoke, and a magnet contacting the first yoke and the second yoke. The coil is placed between the first yoke and the second yoke. This lens actuator moves the lens by a long distance, and has a small size.

Lens actuator

Growing community of inventors

Kanagawa, Japan

Masaya Watada