Vol. 28, Issue 1, pp. 41-50 (1998)

Abstract

The incoherent imaging of a periodic point object consisting of equidistant unit impulses is considered in this study. An aperture composed of black-white concentric annuli is utilized. The intensity distribution in the imaging plane is calculated from the convolution product of the object intensity and the impulse response appropriate to the system. An expression of the modulation transfer function of the imaging system is deduced in matrix form. A computer program is constructed to compute the normalized autocorrelation function of some black-white apertures and compared with that obtained for a uniform circular aperture.