Optical scanning device and laser machining device

摘要

An optical scanning device includes: a projector configured to radiate laser light incident thereon while causing the laser light to make angular movement around a projection center, and a reflector with a parabolic surface, the reflector being configured to reflect the laser light from the projector. The projection center is positioned at a focal point of the parabolic surface. The projector radiates the laser light such that the greater a difference between a rotation angle of the laser light and a reference angle, the lower an angular speed of the laser light, the reference angle being the rotation angle of the laser light when the laser light reflects on a vertex of the parabolic surface. A laser machining device includes the optical scanning device, and is configured to cause the laser light from the reflector to fall on a workpiece to form a machining line.

主权项

1. An optical scanning device comprising:
a projector configured to radiate laser light while causing the laser light to make angular movement around a projection center; and a reflector with a parabolic surface, the reflector being configured to reflect the laser light from the projector, wherein the projection center is positioned at a focal point of the parabolic surface, and the projector radiates the laser light while causing the laser light to make the angular movement at a non-constant speed, such that the greater a difference between a rotation angle of the laser light and a reference angle, the lower an angular speed of the laser light, the reference angle being the rotation angle of the laser light when the laser light reflects on a vertex of the parabolic surface.