| 摘要 |
The invention relates to a beam combining device comprising a plurality of separate input beam paths (9) and at least one output beam path (10) for combining a plurality of input beams to at least one output beam. Devices of this type are required in order, for example, to combine the beams from a plurality of lasers each having a different radiation spectrum to form a single beam. It is an object of the invention to provide a compact and cost-effective beam combining device. In order to achieve this object, the invention proposes that one or a plurality of Risley prism pairs (1) are assigned to each input beam path (9) of the beam combining device, the prism pairs deflecting the input beam in an adjustable direction. The invention furthermore relates to a device for deflecting a light beam, comprising at least one Risley prism pair (1) comprising two prisms (2) arranged one behind the other in the light beam path, wherein at least one of the two prisms (2) is mounted in a manner rotatable about a rotation axis (3), and comprising an electromotive drive that brings about a rotary movement of the at least one prism (2). According to the invention, the electromotive drive is a piezoelectric vibration drive having a mechanical resonator (4) and a piezoelectric element (5) coupled thereto, wherein the resonator (4) bears against a friction wheel (6) connected to the at least one rotatably mounted prism (2) for conjoint rotation. |
