Deformed secondary mirror based on piezoelectric driver

Abstract

The invention provides a deformed secondary mirror based on a piezoelectric driver, which comprises a mirror face, a driver and a rigid base, wherein the mirror face, the driver and the rigid base are bonded with each other into a whole body; the mirror face is in the structure of shell, the front side of the mirror face is an aspheric face and is simultaneously taken as the mirror face of the deformed mirror and the secondary mirror of a telescope, the back side of the mirror face is a spherical face, and the lower face of the mirror face is provided with an electrode head which is integrated with the mirror face, thereby increasing the distance between a bonding face and the mirror face and reducing the local deformation burning bonding; the two ends of the driver are respectively bonded and matched with an interface, thereby guaranteeing the compact contact among the driver, the back face of the mirror face, the bottom face of the electrode head and the top face of the base, guaranteeing the orientation of the driver, and reducing the local deformation during bonding; and the top face of the rigid base is the spherical face, thereby guaranteeing the supporting condition of the driver and realizing the lightweight on the premise that the rigidity is guaranteed. The mirror face of the deformed secondary mirror, the driver and the rigid base are bonded with each other in to a whole body, therefore, compared with the existing deformed secondary mirror, the deformed secondary mirror has the characteristics of compact structure, high rigidity, good stability, high reliability and small weight, and is applied to the application field of the deformed secondary mirror with the less amount of driving units.

Description

technical field [0001] The invention relates to a deformable secondary mirror based on a piezoelectric driver, belonging to the technical field of adaptive optical wavefront correctors. Background technique [0002] The deformable mirror is one of the core devices of the adaptive optics system, and its main function is to generate the controlled surface shape required by the system to correct the distorted wavefront. figure 1. It is a classic discrete continuous surface deformable mirror. This type of deformable mirror is formed by bonding a plane mirror surface 1, a driver 2 and a rigid base 3. It has the advantages of compact structure, high rigidity and good stability. However, this kind of deformable mirror uses a plane reflector as the mirror surface, and a large number of auxiliary optical devices are required to meet the conditions of use of the deformable mirror when it is applied in a telescope system. The existence of auxiliary optics complicates the structure of ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art; to provide a deformable secondary mirror with compact structure, high rigidity, good stability and easy use

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