Patent ID: 8073317

Claim:
A positioning device, comprising: a first member provided with a first magnet arranged along a first axis and a second magnet arranged along a second axis intersecting with said first axis; a first drive magnet and a second drive magnet provided to said first member; a first drive coil provided to a second member to face said first drive magnet and a second drive coil provided to said second member to face said second drive magnet; a drive member including a first yoke provided to said second member to face an opposite surface of a surface of said first drive coil facing said first drive magnet and a second yoke provided to said second member to face an opposite surface of a surface of said second drive coil facing to said second drive magnet, that relatively drives said first member and said second member by an electromagnetic action between said first drive coil and said first drive magnet, and between said second drive coil and said second drive magnet; a first detection portion that detects a relative move of said first member and said second member with respect to said first axis direction in cooperation with said first magnet; a second detection portion that detects a relative move of said first member and said second member with respect to said second axis direction in cooperation with said second magnet, wherein a direction of a first rotation moment generated by an electromagnetic connection between said first yoke magnetized by said first drive magnet and said first magnet is opposite to a direction of a second rotation moment generated by an electromagnetic connection between said second yoke magnetized by said second drive magnet and said second magnet.