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1. (WO2013121788) LENS DRIVING DEVICE AND CAMERA

Pub. No.:    WO/2013/121788    International Application No.:    PCT/JP2013/000822
Publication Date: Fri Aug 23 01:59:59 CEST 2013 International Filing Date: Fri Feb 15 00:59:59 CET 2013
IPC: G03B 5/00
G02B 7/04
H04N 5/225
H04N 5/232
Applicants: MITSUMI ELECTRIC CO., LTD.
ミツミ電機株式会社
ARIJI, Makoto
有路 誠
Inventors: ARIJI, Makoto
有路 誠
Title: LENS DRIVING DEVICE AND CAMERA
Abstract:
A lens driving device includes: a lens holder capable of moving along an optical axis direction; a first coil wound onto the lens holder around the optical axis direction; a plurality of magnets having a magnetized first surface on a S pole or a N pole and a second surface perpendicular to the first surface and the optical axis direction, the magnets being disposed in a state in which the first surface opposes a circumferential surface of the first coil; a magnet holder fixed away from the plurality of magnets; a yoke constituting, together with the plurality of magnets, a magnetic circuit having a magnetic flux that traverses the first coil; a second coil provided opposite the second surface of the magnets; and a base on which the second coil is arranged. An auto-focus lens driving part that includes the lens holder, the first coil, the plurality of magnets, the magnet holder, and the yoke is held on the base so as to allow relative displacement in a direction perpendicular to the optical axis.