球面収差をもつ輪帯状開口による三次元回折像強度分布
1968 年 37 巻 9 号 p. 805-809
詳細
1968 年 37 巻 9 号 p. 805-809
In this paper a study is made of annular apertures with primary spherical aberration, using the Zernike polynomials. The three-dimensional intensitydistributions in meridional sections of diffraction images of annular apertures with primary spherical aberration have been evaluated for various combinations of spherical-aberration values and central-obstruction ratios, and illustrated inthe diagram showing lines of equal light intensity. The intensity distributions are briefly discussed. A further increase in the focal depth is obtained by the introduction of spherical aberration as compared to the annular aperture withoutaberration.
