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Composite visible/thermal-infrared imaging apparatus

  • US 4,751,571 A
  • Filed: 07/29/1987
  • Issued: 06/14/1988
  • Est. Priority Date: 07/29/1987
  • Status: Expired due to Term
First Claim
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1. Multispectral imaging apparatus comprising a wavelength independent focus reflecting optical system for receiving visible and infrared radiation from a scene and for focusing the visible and infrared radiation at respective first and second focal planes which are located the same distance from the optical system;

  • first detector means disposed at the first focal plane for receiving the visible radiation and for providing a first signal corresponding thereto;

    second detector means disposed at the second focal plane for receiving the infrared radiation and for providing a second signal corresponding thereto; and

    means responsive to the first and second signals for displaying a composite image of the scene, the composite image comprising a black and white visible image of the scene with portions of the image highlighted in color in accordance with the infrared radiation received from corresponding portions of the scene.

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