Motion compensation device for suppressing image blur in an optical system

A motion compensation device comprising:

• a motion compensation optical system having an optical axis;
• a fixed upper panel;
• a lower panel;
• a first magnet positioned on an X-axis between said fixed upper panel and said lower panel;
• a second magnet positioned on a Y-axis between said fixed upper panel and said lower panel;
• a first and third yoke biased against said fixed upper panel by said first and second magnets, respectively;
• a second and forth yoke biased against said lower panel by said third and forth magnets, respectively;
• a plurality of elastic support rods extending between said motion compensation optical system and said lower panel, said elastic support rods allowing said motion compensation optical system to move approximately perpendicular to the optical axis of said motion compensation optical system;
• a first coil connected to said motion compensation optical system and adapted to move the motion compensation optical system approximately parallel to the X-axis and approximately perpendicular to the optical axis of said motion compensation optical system by forming a magnetic circuit with said first magnet and said first and second yoke;
• and
• a second coil connected to said motion compensation optical system and attached to said motion compensation optical system on the Y-axis, said coil being adapted to move the motion compensation optical system approximately parallel to the Y-axis and approximately perpendicular to the optical axis of said motion compensation optical system by forming a magnetic circuit with said second magnet and said third and fourth yoke.

A motion compensation device for suppressing blur in an image produced by a main optical system, the motion compensation device comprising:

• a motion compensation optical system having an optical axis;
• a fixed upper panel;
• a lower panel;
• a magnet having two poles aligned perpendicular to the optical axis of said motion compensation optical system, said magnet being positioned between said fixed upper panel and said lower panel;
• a first yoke biased against said fixed upper panel by the magnetic force of said magnet;
• a second yoke biased against said lower panel by the magnetic force of said magnet;
• a plurality of elastic support rods extending between said motion compensation optical system and said lower panel, said elastic support rods allowing said motion compensation optical system to move approximately perpendicular to the optical axis of said motion compensation optical system;
• and
• a coil, wound approximately parallel to the optical axis of said motion compensation optical system, said coil being adapted to move the motion compensation optical system approximately perpendicular to the optical axis of said motion compensation optical system by forming a magnetic circuit with said magnet and said first and second yoke.