... radial defocusing 径向偏焦 axial defocusing 轴向去焦 defocusing: 散焦 ...
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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。
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