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LARGE ARRAY SYNTHESIZING

  • US 3,591,252 A
  • Filed: 10/21/1968
  • Issued: 07/06/1971
  • Est. Priority Date: 10/21/1968
  • Status: Expired due to Term
First Claim
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1. A method of producing a relatively large array of images on a display surface by synthesizing the spatial frequency spectrum of said large array with a relatively small array of pOint sources, comprising the steps of:

  • determining said synthesized spatial frequency spectrum of said large array of images in accordance with the relationship delta (v-qR lambda /T) and delta (u-pR lambda /T) are delta functions at u pR lambda /T, v qR lambda /T, where T the periodicity of the periodic array, lambda the wavelength, p and q are integers, and R is the distance between the surface and the plane of the spatial frequency spectrum said synthesized spatial frequency spectrum comprising a relatively small array of point sources with respect to said large array of images, each of said point sources having a different spatial position, amplitude and phase angle with respect to the remaining points;

    recording said relatively small array of point sources on an energy sensitive surface;

    reconstructing an image of said relatively small array of point sources; and

    forming a diffraction pattern of said reconstructed image, thereby producing said relatively large array of similar images on said display surface.

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