一种异形轻量化空间光谱仪铝反射镜结构设计

A New Structural Design of Special-Shaped Lightweight Aluminum Mirror for Space Spectrometer

针对多通道探测,体积、质量要求严苛,光路在空间中交叉折叠,反射镜数量多,易发生干涉的复杂光机系统中铝反射镜结构设计和轻量化需求,提出了一种新型空间光谱仪用异形轻量化铝反射镜结构设计方法,包括材料选择、构型设计、装配变形卸载方式、轻量化设计方法、表面镀层、测试和检测等关键技术。对某空间光谱仪的研制和测试验证表明,利用本文方法设计的所有铝镜均能满足系统性能要求,且轻量化率均优于50%。本文方法可适用于涉及铝反射镜的多种类型空间光机系统,可为其中铝反射镜设计和紧凑化光机系统设计提供参考。

The lightweight structure design of aluminum mirrors is a difficult problem in the complex optical mechanical system with multi-channel detection, large number of mirrors, strict requirements for volume and quality, cross folding of optical paths in space, short distance of optical components, and easy interference. Either traditional methods have high lightweight rate, but the process is complex, or the lightweight rate is limited. For solving these problems, a new structural design method of specialshaped lightweight aluminum reflectors for space spectrometer is proposed, which includes material selection, configuration design,assembly deformation unloading, lightweight design method, surface coating, detection and error compensation, The experimental verification of a space spectrometer shows that the lightweight rate of all aluminum mirrors designed by this method is better than50%. The development and test of a space spectrometer show that all aluminum mirrors designed by this method can meet the requirements of the system, and the lightweight rate is better than 50%.This method can be applied to various types of space optomechanical systems involving aluminum mirrors, and can provide reference for aluminum mirror design and compact optomechanical system design.