An improved technique for coherent illumination and imaging of non-diffuse objects, including non-diffuse transparencies, wherein a periodic intensity variation across the illuminating beam at the object is substantially eliminated by integrating the pattern over some distance during the viewing or recordation of an object image. A spatially incoherent source having a size related to the period of the intensity distribution is disclosed to accomplish this integration in both direct imaging of an object and holographic reconstruction thereof.
REDUCED NOISE HIGH RESOLUTION HOLOGRAPHIC IMAGING USING SPATIALLY INCOHERENT RECONSTRUCTING RADIATION