Boivin L P
Appl Opt. 1975 Aug 1;14(8):2002-9. doi: 10.1364/AO.14.002002.
We have studied the effect of diffraction on the flux received by a detector located in the fully illuminated region cast by a circular aperture which is placed between a point source and the detector. This case was studied previously by Steel, De, and Bell, who have derived a diffraction correction formula based on an intensity distribution approximation due to Focke. We have derived a diffraction correction formula based on a different type of approximation. The corrections predicted by this formula are much greater than those predicted by Steel et al.'s formula. The validity of our formula and reasons for the discrepancy between the two methods are discussed; some supporting experimental evidence is presented. The case of complex radiation is discussed; it is shown that, under certain conditions, the calculation of diffraction cor rections is very simple.
我们研究了衍射对位于点光源与探测器之间的圆形孔径所投射的完全照明区域内的探测器接收到的通量的影响。此前，斯蒂尔、德和贝尔研究过这种情况，他们基于福克提出的强度分布近似推导出了一个衍射校正公式。我们基于一种不同类型的近似推导出了一个衍射校正公式。该公式预测的校正值比斯蒂尔等人的公式预测的校正值大得多。讨论了我们公式的有效性以及两种方法之间存在差异的原因；还给出了一些支持性的实验证据。讨论了复杂辐射的情况；结果表明，在某些条件下，衍射校正的计算非常简单。
