Abstract
The continuous improvement in the performance and stability of space spectrometers, which include spectral range, spectral resolution, and spectral distortion, makes optical system increasingly complex, which means more optical components are required. However, space missions have strict restrictions on volume and weight. Therefore, light and compact design of space spectrometers are required. The aluminum mirror can undertake both optical and bearing functions, which is one of the key technologies to address this challenge and realize the light and compact optical-mechanical system that has broad applications. A novel structure design method for special-shaped lightweight aluminum mirror of space spectrometers is proposed in this study, which includes scheme design, assembly deformation and unloading structure mode analysis, and lightweight design method. The aluminum mirrors of a hyperspectral remote spectrometer is designed by this method to verify the effectiveness of the method. Different load-bearing structures and weight reduction designs are designed for different aluminum mirrors, so that the weight of this high complexity and multi temperature spectrometer is reduced by 50% while the accuracy remains unchanged.
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