Small-size reflecting-mirror flexible support structure suitable for thermal cycle condition

Abstract

The invention discloses a small-size reflecting-mirror flexible support structure suitable for a thermal cycle condition. The structure comprises a mirror frame, a connection component and a flexible support plate, wherein a lens is installed in a frame body. A linear expansion coefficient of the connection component is close to a linear expansion coefficient of the lens. One side of the connection component and the lens are bonded and connected through an optical cement. The other opposite side of the connection component is connected to the flexible support plate. The flexible support plate is fixedly installed on an inner wall of the mirror frame. In the invention, a peripheral flexible support structure is adopted and the structure is simple and is suitable for small size reflecting mirror support; a connection structure of combining a gluing mode and screw fastening is adopted, the structure is compact, stress distribution is uniform and temperature adaptability is good; and according to a deformation condition of the lens under a thermal cycle work condition, a three-edge flexible support structure is designed, which is good for stress release of the lens and the connection component, and a surface type and position precision of the lens are increased.

Description

technical field [0001] The invention relates to a supporting structure of a reflecting mirror, in particular to a flexible supporting structure of a small-sized reflecting mirror suitable for thermal cycle conditions. Background technique [0002] The support structure of the mirror will directly affect the surface shape and position accuracy of the lens, and then affect the performance of the entire optical system, so it has always been one of the key points and difficulties in the design of optical-mechanical structures. When the working environment temperature of the reflector changes, due to the different thermal characteristics of the material of the lens and the supporting structure, the size of the lens and the support will not match after the temperature change, which will cause the stress between the lens and the support to increase sharply, and the lens will be deformed , the surface accuracy is reduced, which seriously affects the optical performance of the lens. ...

AI Technical Summary

Problems solved by technology

If under thermal cycle conditions, the above-mentioned surrounding pressure ring support method cannot compensate for the impact of environmental temperature changes, the deformation of the pressure ring and the lens will have no place to release when the temperature changes, resulting in the only way to adapt to environmental temperature changes through self-deformation , resulting in large changes in the surface shape and position accuracy of the mirror

Images