OPTICAL MEMBER DRIVING DEVICE AND PROJECTION DISPLAY APPARATUS INCLUDING THE SAME
An optical member driving device includes an optical member that light is incident on; and a plurality of actuators that shift different portions of an outer peripheral edge of the optical member in a traveling direction of the light immediately before the light is incidence. Each of the plurality of actuators includes an arm that rotates about a rotation center line extending in a direction perpendicular to the traveling direction and supports the optical member at a first end of the arm, a conductor that is provided at a second end of the arm and extends in a direction from the second end toward the first end, the conductor being where a current flows, and a magnet pair that is provided to sandwich the second end of the arm at an interval and generates a magnetic field in a direction intersecting with a direction where the conductor extends.
1 . An optical member driving device comprising:
an optical member that light is incident on;
an actuator that shifts the optical member in a traveling direction of the light immediately before the light is incident on the optical member,
wherein
the actuator includes
an arm that moves about an axis extending in a direction intersecting the traveling direction and supports the optical member at a first end of the arm,
a conductor that is provided at a second end of the arm and extends in a direction from the second end toward the first end of the arm, the conductor being where a current flows, and
a magnet that generates a magnetic field in a direction intersecting with a direction where the conductor extends,
wherein
the conductor is a coil, and
a plane intersecting with a winding axis of the coil is a plane formed by a direction in which the optical member is provided with respect to the coil and the traveling direction of the light.
2 . The optical member driving device according to claim 1 , wherein
the actuator includes a plurality of actuators,
the optical member has an incidence surface that the light is incident on, and
a straight line connecting at least two of the plurality of actuators is at a position different from the incidence surface when viewed from the incident direction.
3 . The optical member driving device according to claim 2 , wherein
a part of the straight line connecting at least two of the plurality of actuators is at a position overlapping the incidence surface when viewed from the incident direction.
4 . The optical member driving device according to claim 1 , wherein
the optical member has an incidence surface that the light is incident on, and
a region where an extension line of the winding axis of the coil is located is a region different from the incidence surface.
5 . The optical member driving device according to claim 4 , wherein
the arm is bent toward the incident surface.
6 . The optical member driving device according to claim 1 , wherein
the optical member is parallel plate glass that light is transmitted through.
7 . The optical member driving device according to claim 1 , wherein
the actuator includes a plurality of the magnets.
8 . The optical member driving device according to claim 7 , wherein
the plurality of magnets are arranged in parallel in a direction different from the winding axis direction of the coil.
9 . A projection display apparatus comprising:
a light source;
a light modulation element that converts light from the light source into image light;
the optical member driving device according to claim 1 that the image light from the light modulation element is incident on; and
a projection lens that projects the image light emitted from the optical member driving device.