Fig. 1
From: Investigation of a new modulated aperture using speckle techniques
a Eight conic apertures placed in tangent with the annular aperture. The annular width = 16 pixels and the external radius = 350 pixels. While the radius of each conic aperture = 64 pixels. b Plot of the conic aperture of radius = 256 pixels placed at 512, 512 pixels. c Eight equally spaced conic apertures where the centers placed at fixed distance = 268 pixels from the center placed at (512, 512). The radius of each conic aperture = 64 pixels. d Normalized PSF as a function of radial distance r (pixels) in the Fourier plane for a lens limited by the aperture shown in Figure c