镜头(地质)
灵敏度(控制系统)
热膨胀
波前
光学
材料科学
热的
公差分析
宏
光学(聚焦)
热分析
职位(财务)
计算机科学
电子工程
物理
工程制图
工程类
复合材料
热力学
经济
程序设计语言
财务
作者
Martin Tangari,Victor Densmore,Lee Johnson,Chris Giokaris,Kate Medicus,Kenneth R. Castle,Tilman W. Stuhlinger
摘要
Optical systems are often athermalized over large temperature ranges through the proper choice of glasses and mounting materials. However, variations in the coefficients of thermal expansion (CTE) and thermo-optical coefficients that govern thermal behavior are seldom included in the tolerance analysis. Manufacturers rarely provide these material tolerances and we can only account for their effects through custom macros in lens design software. We demonstrate that a first-order sensitivity analysis on the change in focus position at each environmental condition accurately predicts the degradation of the system performance. We verified this correlation by creating a custom catalog of identical glasses with perturbed thermal parameters and evaluating the RMS wavefront error for each material substitution.
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