FIELD: optics.
SUBSTANCE: invention relates to a laser optical head. Fixed housing has protective glass fixed at the input of the laser beam. Laser-free optical reflecting system for focusing a laser beam consists of a large fixed mirror with a central hole fixed inside the fixed housing by means of a ring and a small movable mirror. Ring rests on the ledge inside the fixed case. Small movable mirror is located on bimorph type displacement piezoelectric drive, elements of which are rigidly fixed by one end between ring and ledge inside fixed housing, and by the other end are pivotally connected to the small moving mirror mandrel with the possibility of the small movable mirror movement relative to the large fixed mirror. Curved surface of both mirrors is matched.
EFFECT: technical result consists in providing simple and reliable control of welding and cutting modes by using a lens-free optical mirror reflecting focusing system of a laser beam with preservation of initial settings of optimum focusing plane position by accurate movement of small movable mirror, which enables to perform all modes on one laser head: welding, cutting along closed or open loop, surface heating.
1 cl, 3 dwg
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