LIGHT GUIDE DEVICE AND LASER PROCESSING DEVICE Russian patent published in 2021 - IPC G02B26/12 B23K26/82 

FIELD: light guide devices.

SUBSTANCE: invention generally relates to a light guide device for scanning light using a mirror having a plurality of reflective surfaces. The claimed light guide device includes a first light guide part, a polygonal mirror, and a second light guide part. The first part of the light guide reflects and directs the laser light emitted by the laser generator. The polygonal mirror is rotatable and includes a plurality of reflective parts (33) arranged so as to form a regular polygonal reflective surface in view in the direction of the rotational axis, and this polygonal mirror reflects the laser light guided by the first part of the light guide by the reflective part during rotation. The second part of the light guide reflects the laser light reflected by the reflective part (33) of the polygonal mirror, and directs the laser light so that it is emitted to the work piece at each reflective part (33). The reflective part (33) of the polygonal mirror is configured to reflect the incident laser light so that the optical axis of the incident light is displaced in the direction of the rotation axis. At least two reflective parts (33) differ from each other in position in the direction of the rotation axis.

EFFECT: creation of a light guide device capable of distributing the position of the irradiated area in the direction of the line width without moving the irradiated target.

4 cl, 7dwg