第三个理由是：我认为当有一天，我出国做短途旅行，我可以用英语和筏梗齿凰佼好酬瞳揣困人们谈话。
The third reason is:I think when day, I am go abroad, go to trip, I can use English to talk with the people.
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.
应用推荐