Annular and Annulus Apertures with Spherical Aberration and Defocussing

抄録

In this paper a study is made of the annular aperture with primary spherical aberration and defocussing using the Zernike polynomials. Both the intensity distribution in the central plane (p=0) and the axial intensity (q=0) have been evaluated for a large number of cases. A modification of the annular aperture, the annulus aperture, has also been investigated.