Flexible heat dissipation and vibration reduction supporting structure for optical lens of space pointing measuring instrument

Abstract

The invention relates to a flexible heat dissipation and vibration reduction supporting structure for an optical lens of a space pointing measuring instrument. The flexible heat dissipation and vibration reduction supporting structure is characterized by comprising an inner ring and a fixed flange; cementing links are evenly distributed on the inner side wall of the inner ring, and folding arm beam links with transverse and longitudinal freedom degree releasing capacity are evenly distributed between the outer side wall of the inner ring and the fixing flange; the folding arm beam links and the cementing links are arranged in a staggered manner; and radial positioning of the optical lens is achieved through the cementing link, and axial positioning and connection of the optical lens are achieved through the fixing flange.

Description

technical field [0001] The invention relates to the fields of extremely high-precision pointing measurement technology in space, space remote sensing and star sensors. In particular, it relates to a flexible heat dissipation and vibration reduction support structure for the optical lens of a space pointing measuring instrument. Background technique [0002] The lens is the core key optical component of the transmissive optical system, and its surface shape accuracy and stability determine whether the performance index of the entire optical system can meet the design index. With the improvement of the resolution, field of view and aberration of the optical system, the aperture of the optical lens is getting larger and larger, and the requirements for the accuracy of the surface shape of a single lens are also getting higher and higher. How to reasonably design the support of the large-diameter optical lens The structure is crucial to ensure the overall performance of the opt...

AI Technical Summary

Problems solved by technology

[0005] The disadvantages of this flexible structure are: a) The flexible link can effectively reduce the thermal stress in the transverse (radial) direction, but cannot reduce the thermal stress in the longitudinal (axial) direction, and cannot be used to support large-diameter optical lenses with higher performance requirements ; b) The outer frame connected to the flexible link is too bulky, which reduces the quality utilization rate of the flexible link; c) The internal convex structure of the flexible link has no longitudinal limit, and a longitudinal limit structure needs to be designed separately, which is not conducive to the ultra-high Position accuracy installation; d) The internal convex structure of the flexible link is connected to the lens through adhesive, and the storage position of the adhesive is not designed, which makes it difficult to control the amount of adhesive used in the actual operation process; d) This flexible structure does not propose the adaptation of mechanical properties Sexuality, which brings difficulties to the engineering application of large-aperture lenses

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