The package enables the user to draw the diffraction patterns for different geometric forms of apertures for monochromatic light. The aperture stops can have rectangular, circular or triangular openings. The view of the diffraction may be planar, or three-dimensional.

Options available are the dimensions of the aperture under consideration and of the particular optical setting, e.g. the radius in case of an circular opening. Moreover one can choose the wavelength of the light (the associated color will be calculated by the package).

The authors are Manuel Luque and Herbert Voß.