用于遮盖圆形瞳孔的内置功率。

Included power for obscured circular pupils.

作者信息

Mahajan V N

出版信息

Appl Opt. 1978 Mar 15;17(6):964-8. doi: 10.1364/AO.17.000964.

DOI:10.1364/AO.17.000964

PMID:20197908

Abstract

Power contained in a square area of an image formed by a diffraction-limited imaging system with a centrally obscured circular pupil is calculated and compared with the power contained in a circular area. It is shown that, regardless of the amount of obscuration, the difference between the corresponding ensquared and encircled powers is less than 9% of the total image power. Approximate expressions are obtained for the power lying outside a large square or a circular area.

摘要

计算了由具有中心遮挡圆形光瞳的衍射极限成像系统形成的图像的方形区域内所含的功率，并将其与圆形区域内所含的功率进行比较。结果表明，无论遮挡量如何，相应的方均功率和圆围功率之间的差异小于图像总功率的9%。得到了大方形或圆形区域外功率的近似表达式。