Limits of the efficiency of imaging with obstructing apertures

Abstract EN

Two-dimensional numerical solutions are carried out to assess the quality of obstructing apertures in terms of the diffraction limited resolution.

This include the quality of the point spread function (psf), the modulation transfer function (MTF), and an image of double lines.

These are average intensity of the psf (AI), maximum intensity of the psf, (MI), full width at half maximum of the psf (FW) average frequency components of MTF (AFC), and average side loops of an image of a double lines.

The results indicate that the separation of the two lines becomes recognizable using central obstruction of radius equal to or greater than approximately 0.6 times the radius of the primary aperture.