Characteristics of the defocusing error signals are expressed in the terms of an off-axial detection system by geometric optics. The results are compared with experiment.
本文用几何光学描述了离轴探测调焦误差信号与系统参数的关系，并与实验结果进行了比较。
The harmonic diffractive elements are introduced into infrared hyper-spectral detection, and the on-axial and off-axial infrared multi-spectral imaging spectrometers are designed.
将谐衍射元件应用于红外超光谱成像中，设计了红外双波段同轴和离轴超光谱成像系统；
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