Flexible supporting structure of large-caliber primary reflector

Abstract

The invention provides a flexible supporting structure of a large-caliber primary reflector. The flexible supporting structure of the large-caliber primary reflector comprises a supporting plate, a connecting plate and a supporting rod. The supporting rod is connected between the supporting plate and the connecting plate. The flexible supporting structure of the large-caliber primary reflector is characterized in that a flexible hinge is arranged on the supporting rod. According to the design of the flexible supporting structure of the large-caliber primary reflector, due to the fact that the flexible link is arranged in the supporting structure reasonably, the strict requirements for dynamic rigidity, static rigidity and dimensional stability to heating of a large-caliber space reflector are met, and the high precision of the mirror surface is guaranteed.

Description

technical field [0001] The design relates to a flexible supporting structure of a large-diameter primary reflector, and belongs to the field of optoelectronic technology. Background technique [0002] Long-focal-length and large-aperture space cameras generally use reflective optical systems, and the support technology for large-aperture primary mirrors has always been one of the key technologies in the development of space cameras. The guarantee of the supporting stiffness and strength of the primary mirror is relatively easy to meet. As long as the supporting structure is sufficiently rigid, it can ensure that the shape accuracy and position accuracy of the primary mirror under the action of gravity are not too bad. Many existing supporting structures do not consider flexible support. System, once the temperature of the space environment changes, the expansion and contraction caused by the mismatch of the thermal characteristics of the support structure and the reflector m...

AI Technical Summary

Problems solved by technology

The guarantee of the supporting stiffness and strength of the primary mirror is relatively easy to meet. As long as the supporting structure is sufficiently rigid, it can ensure that the shape accuracy and position accuracy of the primary mirror under the action of gravity are not too bad. Many existing supporting structures do not consider flexible support. System, once the temperature of the space environment changes, the expansion and contraction caused by the mismatch of the thermal characteristics of the support structure and the reflector material will be inconsistent, so that the thermal stress generated by the support structure due to thermal deformation will be transferred to the reflector, resulting in The decline of shape accuracy will lead to the decline of image quality, and in severe cases, it will not even be able to image correctly

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