给出该孔径的光瞳函数以及三种不同型的结构形式，并导出它的调制传递函数的解析表达式。
The pupil function, analytical formulas of its corresponding modulation transfer function (MTF) and three configuration models have been given.
模拟结果表明，利用三环相位光瞳滤波器，不仅可以在焦面上实现光强的平顶分布，而且还可以得到单环衍射光束。
The results indicate that flat-top beam shaping and single-circle beam shaping at the focal plane can all be realized by using three-zone annular phase pupil filters.
通过数值模拟，使用新的参数t, w讨论确定了三区二元相位型光瞳滤波器的超分辨区域。
New parameters (t, w) are used to determine the superresolution region of three zones annular binary phase filter through numerical simulations.
通过数值模拟，使用新的参数t, w讨论确定了三区二元相位型光瞳滤波器的超分辨区域。
New parameters (t, w) are used to determine the superresolution region of three zones annular binary phase filter through numerical simulations.
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