讨论环形孔径高斯光束的远场光斑能量分布，并给出拟合表达式。
The energy distribution of far field spot for annular aperture Gaussian beam is discussed and the fitting expression is given.
讨论了环形孔径高斯光束的远场光斑能量分布，并给出了拟合表达式。
The far-field irradiance distribution of a Gaussian beam which is transmitted from telescope with certain center obscure is researched in this paper.
优化的拼接算法是环形子孔径扫描测量大口径非球面光学元件的关键问题。
Optimal stitching algorithm is extremely important for testing large-aperture aspherical optical elements by annular sub-aperture scanning technique.
环形子孔径法是一种无需辅助元件就能实现对大口径、大相对口径非球面检测的“柔性”测试技术。
Annular subaperture test method has been developed for low cost and flexible measurement of large, fast aspheric surfaces without any special elements.
基于标量衍射理论，考虑衍射效应的条件下，从理论上推导了编码孔径点扩散函数的公式，并对环形编码孔径进行了详细的讨论。
Considering diffraction effect based on scalar theory, we deduced a formula for point spread function of the coded aperture and discussed the ring coded aperture in detail.
总结非球面常用检验方法在应用中优、缺点的基础上，使用环形子孔径扫描法来测量大口径非球面。
On the basis of summing up conventional testing methods for aspheric surfaces , annular sub-aperture scanning method is applied to measurement of large-aperture aspheric surfaces.
总结非球面常用检验方法在应用中优、缺点的基础上，使用环形子孔径扫描法来测量大口径非球面。
On the basis of summing up conventional testing methods for aspheric surfaces , annular sub-aperture scanning method is applied to measurement of large-aperture aspheric surfaces.
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