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Vector lock-in imaging system

  • US 4,878,116 A
  • Filed: 06/02/1988
  • Issued: 10/31/1989
  • Est. Priority Date: 06/02/1988
  • Status: Expired due to Term
First Claim
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1. An imaging assembly for producing images synchronous with the periodicity of an object field (12), said assembly (10) comprising;

  • reference means for producing a reference signal representing the periodicity of an object field (12), camera means (14) for detecting radiation from the object field (12) producing a video signal of the image comprising a series of pixels representing a frame of the image of the object field (12) and for producing a timing signal for each of said pixels of said frame, processor means (16) for receiving said frame of said video signal and storing said frame in synchronism with said reference signal and for averaging said stored frame with subsequently received frames having said pixels synchronous with said reference signal producing an image signal, and display means (26) for receiving said image signal and displaying the averaged image.

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