| 摘要 |
FIELD: physics, optics.SUBSTANCE: invention relates to adaptive optics. A deformable mirror includes an elastic reflecting plate, the profile of which on the back side has a variable thickness, as well as deformation means in the form of a piezoceramic column. The elastic plate is square-shaped with sides measuringwhereis the radius of the corrected beam, and is linked to a chassis on two parallel sides. The thickness of the elastic plate in sections parallel to said sides is constant, and in the perpendicular direction satisfies the law:whereh(x) is the variable thickness of the plate; his the structurally determined maximum thickness of the plate; r is the current coordinate along the surface of the elastic plate;his the minimum allowable thickness. At the centre of the elastic plate, in parallel to the fixed sides, there is a rib with a height L?h, rigidly linked to the plate, one end of which is pivotally linked to a chassis and lies at a distance offrom the centre of the elastic plate. A piezoceramic column is pivotally linked to the rib at a point which coincides with the centre of the elastic plate, and additionally includes a rotary drive and a fixed base. The axis of the rotary coincides with the centre of the elastic plate.EFFECT: high accuracy of phase compensation of thermal distortion of a laser beam in the atmosphere, smaller dimensions.2 dwg |
