[1] Sales T R M, Morris G M. Fundamental limits of optical superresolution. Opt. Lett., 1997, 22(9):582~584
[2] Manuel M C, Pedro A, Jorge O C et al.. Tunable axial superresolution by annular binary filters. Application to confocal microscopy. Opt. Commun., 1995, 119(5/6):491~498
[3] van Der Voort H T M, Brakenhoff G J. 3-D image formation in high-aperture fluorescence confocal microscopy: a numerical analysis. J. Microscopy, 1990, 158(1):43~54
[5] Richards B, Wolf E. Electromagnetic diffraction in optical system Ⅱ. Structure of the image field in an aplanatic system. Proc. Roy. Soc. (A), 1959, 253(1274):358~379
[6] Yoshida A, Asakura T. Electromaganetic field in the focal plane of a coherent beam from a wide-angular annular-aperture system. Optik, 1974, 40(3):322~331