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REAL TIME THREE DIMENSIONAL TELEVISION SYSTEM

  • US 3,566,021 A
  • Filed: 11/29/1968
  • Issued: 02/23/1971
  • Est. Priority Date: 11/29/1968
  • Status: Expired due to Term
First Claim
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1. In a real time three-dimensional television system having a transmitter, one or more remote receivers, and a transmission facility for sending signals generated at the transmitter to said remote receivers, a source of coherent light located at the transmitter, means for nonlinear modulating at a microwave frequency said coherent light, means for filtering out all but one sideband of the said coherent light, means for illuminating an object scene with said one sideband of coherent light, photodetection means positioned to receive a portion of the light reflected fRom said object scene, means for also deriving a narrow reference beam of coherent light from said source, and means for raster scanning the reference beam over said photodetection means to generate an alternating current signal having a carrier in the microwave region which is modulated in phase and amplitude in accordance with the interference pattern produced by the interfering light beams impinging on the photodetection means.

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