Patent ID: 10359624

Abstract:
To provide a galvanoscanner enabling execution of weaving welding whereby favorable weld quality is easily obtained. A galvanoscanner (50) includes: two galvano mirror (51, 52) that is configured to be rotatable about a rotation axis (X1, X2), and reflects a laser beam (L); a galvano motor (54, 54) that rotationally drives the galvano mirror (51, 52); an optical component (2) that is arranged so that the laser beam (L) incident on the galvano mirror (51, 52) is incident in a thickness direction (T), is configured to be rotatable about a rotating shaft (20), and has a refractive index that differs from a surrounding; and a rotary motor (4) that rotationally drives the optical component (2), in which the optical component (2) is arranged so that, in a cross section (C) in a thickness (T) direction, an incident side (21) and an emission side (22) are parallel to each other, and the incident side (21) is sloped relative to an optical axis (L1) of the laser beam (L) that is incident, and thickness (T) thereof continuously varies along a rotation direction.