Optical deflector
AssigneePioneer Corporation
InventorsTomotaka Yabe, Kenji Kawai, Seiro Oshima
Life of this patent
Estimating the term…
Abstract
An optical deflector capable of making a swing angle of a reflective plate larger is provided. In drive elements, since a size in the Y direction at first positions separated by a first distance from the reflective plate is larger than a size in the Y direction at second positions separated by a second distance from the reflective plate, the second distance being greater than the first distance, it is possible to increase displacement of tips of beam portions at the first positions and to make a swing angle of the reflective plate large by increasing a generated force of the entire beam portions.
Claims8
An optical deflector comprising:
- a reflective plate;
- a pair of shaft portions extending in a direction of a rotation axis of the reflective plate and determining the rotation axis of the reflective plate;
- a pair of beam portions supporting the pair of shaft portions while extending to intersect the rotation axis;
- and
- drive elements rotating the reflective plate by deforming the beam portions,
- wherein the drive elements are arranged in the beam portions and a size thereof in a direction orthogonal to the rotation axis at positions separated by a first distance from the reflective plate along an axial direction of the rotation axis is larger than a size in the direction orthogonal to the rotation axis at positions separated by a second distance from the reflective plate along the axial direction, the second distance being greater than the first distance.
Dependencies are inferred from the claim text.