Optical device, optical scanner, and image forming apparatus
AssigneeSeiko Epson Corporation
InventorsYasushi Mizoguchi, Hirokazu Yamaga
Life of this patent
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Abstract
An optical device includes: a movable plate disposed in a distribution range of light input from outside, and having a light reflecting surface adapted to reflect the light; a shaft member adapted to support the movable plate so that the movable plate can swing around a predetermined axis; a permanent magnet associated with the movable plate; and a coil generating an electromagnetic force to swing the movable plate. An upper surface of the coil is opposite to the permanent magnet, and the upper surface of the coil is formed as a plane having a predetermined angle with respect to a plane parallel to the movable plate.
Claims5
An optical device comprising:
- a movable plate disposed in a distribution range of light input from outside, and having a light reflecting surface adapted to reflect the light;
- a shaft member adapted to support the movable plate so that the movable plate is operable to swing around a predetermined axis;
- a permanent magnet associated with the movable plate;
- and
- a coil generating an electromagnetic force to swing the movable plate,
- wherein an upper surface of the coil is opposite to the permanent magnet, and the upper surface of the coil is formed as a plane having a non-parallel angle with respect to a plane parallel to the movable plate.
Dependencies are inferred from the claim text.