CEMENTED DOUBLET LENS AND DIFFRACTION PATTERNS OF THE MAXIMUN SPATIAL FREQUENCIES OF THE FOURIER TRANSFORM

In this research, with the incorporation of propagation method concepts of the angular spectrum, and considering the effect produced by the finite apertures of a transforming lens/cemented doublet spherical lens on the amplitude distribution of the diffracted electric field which influences on it, produced by an extended object illuminated with plane waves; the diffraction mathematical model of the Fourier transform of the maximumspatial frequencies was obtained.The experimental results are presented; they are based on diffraction pattern images in intensity distribution engraving in specific conditions through the photographic method and using rectangular geometry apertures as diffractor objects