A Deformable Mirror Unit with Deformation Compensation and a Discrete Deformable Mirror System

Abstract

The invention discloses a deformable mirror unit with deformation compensation and a deformable mirror system. The invention discloses a deformable mirror unit with deformation compensation, which includes a single deformable lens, a pole head, a driver and a base. Multiple drives are mounted on the base. The driver can automatically expand and contract; the outer end of each driver is fixed with a pole head; the outer end face of the pole head is provided with a plurality of blind holes. The back of the single deformable lens is fixed with the outer end of each pole. The single deformable lens is provided with a plurality of through holes. The diameter of the through hole is 1 to 100 nm. In the present invention, by opening nano-scale through holes on the single deformable lens, since the diameter of the through hole is smaller than the unit gap of the deformable mirror, the through hole improves the heat dissipation performance and has almost no influence on the performance of the deformable mirror. The present invention can fully reduce the temperature of the single deformation lens by setting up a multi-layer heat dissipation flow channel which is combined with a cross-shaped flow channel and a circular flow channel.

Description

technical field [0001] The invention belongs to the technical field of optics, and in particular relates to a real-time control device for thermal deformation of a deformable mirror in an adaptive optical system. Background technique [0002] Changes in temperature in the turbulent motion of the atmosphere cause small changes in the density of the atmosphere, which in turn cause small changes in the refractive index. The random variation of the refractive index produces obvious inhomogeneity of the atmospheric refractive index distribution in the large-scale range, which leads to the change of the wavefront of the beam during the atmospheric transmission, which reduces the beam quality and causes image degradation. [0003] The adaptive optics system can effectively solve the aberration compensation problem caused by beam wavefront distortion. Its principle adopts the principle of closed-loop control system. Optical components such as stages and beamsplitters. Among them, ...

AI Technical Summary

Problems solved by technology

Random changes in the refractive index produce significant inhomogeneity in the distribution of the atmospheric refractive index on a large scale, resulting in changes in the wavefront of the beam during atmospheric transmission, reducing the quality of the beam and causing image degradation

Images