• openAccess   Tunable telephoto: governable Fourier spectrum anamorphic scaling 

      Gomez-Sarabia, Cristina Margarita; Tajahuerce, Enrique; Ojeda-Castaneda, Jorge (2021-02-18)
      We discuss the Gaussian design of a device that controls the scale, in an anamorphic fashion, of Fraunhofer diffraction patterns. The device uses two pairs of varifocal cylindrical lenses. For spherical lenses, the optical ...