Abstract: Abstract： Image component is the key of space optical sensor and camera. Therefore, the antimechanical properties directly affect measurement accuracy. In order to improve the mechanical properties, mechanical analysis of the image component is carried out firstly, which indicates that stiffness and strength meet the requirement. Since simulation analysis can only be used to evaluate the stability qualitatively, experimental method is applied for quantitative evaluation in this paper. Accordingly, a mechanical stability evaluation method is proposed for image component, which includes two indicators, structure slip and optical axis change. Lastly, the evaluation method is applied for mechanical stability analysis, test and measurement. It is confirmed that the evaluation method proposed in this paper is consistent with the evaluation results of the three structures by simulation and experimental. The method can be applied to the space optical instruments which are sensitive to position changes.
Keywords： space optical sensor; image component; mechanical stability; mechanical analysis; quantitative evaluation method

Key words: Keywords： space optical sensor, image component, mechanical stability, mechanical analysis, quantitative evaluation method