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Micrometer wave imaging device

  • US 4,910,523 A
  • Filed: 11/06/1987
  • Issued: 03/20/1990
  • Est. Priority Date: 11/06/1987
  • Status: Expired due to Term
First Claim
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1. A device for providing signals responsive to millimeter wave radiation detected from a field of view, comprising:

  • an array of millimeter wave mixer/detector elements, optically aligned with the field of view;

    a multiple element array of sources of millimeter wave energy located at an angle to the axis of optical alignment of said array of mixer/detector elements and field of view;

    means for separating said energy into an illumination beam and a local oscillator beam;

    means for directing the illumination beam onto the field of view;

    means for directing the local oscillator beam onto the mixer/detector array so as to uniformly illuminate the mixer/detector array; and

    means for focusing milli field of view onto said mixer/detector

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