大型月球模拟器光学系统设计及仿真

设计了一种口径为Φ2500 mm的大型月球模拟器光学系统，通过控制不同波段LED灯组合成多个LED组元和灯阵实现355～1000 nm谱段月球光谱的模拟和不同月相的转换，从而模拟特定月相的几何特征和辐射特性。介绍了大型月球模拟器的组成和工作原理，利用光学分析软件LightTools对月球模拟器不同月相的辐亮度和辐照度不均匀性进行了仿真分析。结果表明，满月时辐亮度为32 W/(sr·m2)，不同月相的发光面照度不均匀度为14.7%，亮度不均匀度为17.2%，满足设计要求。

Abstract

The optical system of a large moon simulator with the diameter of 2500 mm is designed. By controlling the LED light of different bands and combining it into multiple group elements and lamp arrays, the simulation of the moon spectrum and the transition of different moon phase in the spectral bands from 355 nm to 1000 nm is achieved. Thus the geometric characteristics and radiation characteristics of the particular “phase” are simulated. We introduce the composition and working principle of large moon simulator, and simulate and analyze the indicators including radiance and irradiation non-uniformity of different phases in the moon simulator by the LightTools software. The results show that the radiance is 32 W/(sr·m2) when the moon is full, the illumination non-uniformity is 14.7%, and the brightness non-uniformity is 17.2% on the luminous surface of different phases of the moon. These parameters can meet the design requirements.

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大型月球模拟器光学系统设计及仿真

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