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特定函数-大角度中性变密度盘是一种新型的大动态范围的星仿真器件。它能把宇宙中星体微弱的光强模拟出来,并标定天空背景特性;它在一些重要领域有广泛的应用。研制过程中我们设计具有独创性的遮蔽机构在0°～330°的基片上使得光密度呈连续非线性变化,最大光密度274倍,最小光密度为0.01,使用波段(0.4～1.1)μm,且中性好,光密度随基片角度分布非线性度大。
Specific Function - Large Angle Neutral Density Disk is a new type of star simulation device with large dynamic range. It simulates the faint light of a cosmic body in the universe and characterizes the background of the sky; it has wide applications in several important areas. In the development process, we designed the original concealment mechanism to make the optical density change continuously and non-linearly on the 0 ° ~ 330 ° substrate with the maximum optical density of 274 times, the minimum optical density of 0.01, the waveband of (0.4 ~ 1.1) μm, And neutral, optical density with the substrate angle distribution of non-linearity.