紫外星敏感器光学系统设计及其鬼像分析

发布时间：2018-06-18 01:34

  本文选题：紫外星敏感器 + 光学设计　； 参考：《红外与激光工程》2016年01期

【摘要】：针对空间紫外波段航天器自主导航姿态敏感器的特殊需求,提出基于正组为FK5和熔石英、负组为QF1的新型紫外玻璃组合方法,设计了波段330~365 nm、焦距80 mm、F数1.6、视场角8°×8°的紫外星敏感器。基于近轴鬼像能量计算的方法对鬼像抑制指标进行计算。利用Code V对系统轴上一阶鬼像进行初步的分析与判断,再利用非序列光线追迹对系统轴外多阶鬼像进行仿真计算,得到完备的轴外鬼像能量分布。结果表明,该光学系统结构紧凑,像质良好,各视场成像弥散斑均方根半径10μm内能量集中度大于80%,相对畸变优于0.05%,在相差7等星的动态范围下,像面处亮星最大鬼像光斑照度仅为暗星照度的1/21,满足紫外星敏感器的探测需求。
[Abstract]:A novel UV glass combination method based on positive set FK5 and fused quartz and negative set QF1 is proposed to meet the special needs of spacecraft autonomous navigation attitude sensor in space ultraviolet band. A purple alien sensor with a focal length of 80 mm F number 1.6 and an angle of view of 8 掳脳 8 掳is designed. Based on the near axis ghost image energy calculation method, the ghost image suppression index is calculated. The first order ghost image on the axis of the system is analyzed and judged by Code V, and the multi-order ghost image outside the axis of the system is simulated by non-sequential ray tracing, and the complete energy distribution of the ghost image outside the axis is obtained. The results show that the optical system is compact, the image quality is good, the energy concentration is greater than 80 within 10 渭 m of the root mean square radius of each field of view imaging diffusion spot, the relative distortion is better than 0.05 and the dynamic range of the difference is 7 stars. The maximum speckle illumination of the bright star at the image plane is only 1 / 21 of that of the dark star, which meets the detection requirements of the ultraviolet star sensor.
【作者单位】： 中国科学院长春光学精密机械与物理研究所中国科学院光学系统先进制造技术重点实验室;中国科学院大学;
【基金】：国家自然科学基金青年科学基金(61007009)
【分类号】：V448.22
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本文编号：2033402