JP2016122044A5

JP2016122044A5 -

Info

Publication number: JP2016122044A5
Application number: JP2014260288A
Authority: JP
Filing date: 2014-12-24
Publication date: 2018-02-01
Anticipated expiration: 2034-12-24

Description

上記目的を達成するために、本発明は、第１ヨークと、前記第１ヨークと平行に配置された第２ヨークと、前記第１ヨークの前記第２ヨークに対向する面に固定された永久磁石と、前記第２ヨークに沿って移動可能に設けられ、通電されることで、前記永久磁石から前記第２ヨークに向かう磁力線に対して直交する方向である前記第２ヨークに沿う方向に推進力を受ける駆動コイルと、を備えるボイスコイルモータであって、前記第２ヨークに対向する前記永久磁石の幅寸法は、前記第１ヨークおよび前記第２ヨークの幅寸法より大きいことを特徴とする。 In order to achieve the above object, the present invention provides a first yoke, a second yoke disposed in parallel with the first yoke, and a permanent fixed to a surface of the first yoke facing the second yoke. A magnet is provided so as to be movable along the second yoke, and is energized to propel it in a direction along the second yoke, which is a direction perpendicular to the magnetic field lines from the permanent magnet toward the second yoke. a voice coil motor comprising a driving coil for receiving a force, a width of the permanent magnet facing the second yoke, and wherein the not larger than the width dimension of the first yoke and the second yoke To do.

Claims

A first yoke;
A second yoke disposed parallel to the first yoke;
A permanent magnet fixed to a surface of the first yoke facing the second yoke;
Provided movably along the second yoke and energized, it receives a propulsive force in a direction along the second yoke, which is a direction perpendicular to a magnetic field line extending from the permanent magnet toward the second yoke. A voice coil motor comprising a drive coil,
The width of the permanent magnet facing the second yoke, a voice coil motor, characterized in that not larger than the width dimension of the first yoke and the second yoke.

The voice coil motor according to claim 1, wherein a width dimension of the permanent magnet is equal to a width dimension of the drive coil.

A lens driving device comprising: a lens holding member that is movably supported along two guide bars extending in the optical axis direction; and a voice coil motor that drives the lens holding member in the optical axis direction.
The voice coil motor is
Lens driving device which is characterized that it is a voice coil motor as claimed in claim 1 or 2.

4. The lens according to claim 3 , wherein a region where the magnetic lines of force extending from the permanent magnet toward the second yoke and the drive coil are orthogonal is arranged along a straight line connecting the two guide bars. 5. Drive device.

An optical apparatus comprising: a lens driving device according to claim 3 or 4.