HOLOGRAPHIC SYSTEM FORMING IMAGES IN REAL TIME BY USE OF NON-COHERENT VISIBLE LIGHT RECONSTRUCTION

摘要

A holographic system is described for forming visible images in real time using holograms sensed with microwave or acoustic waves. Coherent waves are received together with a coherent reference wave at a set of detectors in an antenna array to develop an interference fringe pattern. A visible luminous display of the fringes is produced on a reduced scale by light bulbs driven by the detectors; the light bulbs producing monochromatic, spatially non-coherent visible light. The light from the bulbs is passed through a beam splitter with a portion going through an inverting prism so as to produce an axially symmetric pair of the fringe patterns. A lens delivers the Fourier transform of the double fringes in its focal plane so as to produce a transform which provides the image.