Patent ID: 7697191
Filing Date: 2010-04-13
Classification: G02B

Abstract:
1. A phase contrast system for synthesizing a desired output electromagnetic field u(x″, y″, z″), comprising: a first phase modifying element for phase modulation of an input electromagnetic field by phasor values e first Fourier or Fresnel optics, for Fourier or Fresnel transforming the phase modulated electromagnetic field, positioned in a propagation path of the phase modulated electromagnetic field, a spatial filter for filtering the Fourier or Fresnel transformed electromagnetic field by, second Fourier or Fresnel optics, for forming an electromagnetic field o(x′, y′) by Fourier or Fresnel transforming the filtered electromagnetic field, and a second phase modifying element for phase modulating the electromagnetic field o(x′, y′) into an electromagnetic field o(x′, y′)e