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Infrared vision illumination enhancement

  • US 7,593,056 B2
  • Filed: 10/27/2004
  • Issued: 09/22/2009
  • Est. Priority Date: 10/27/2004
  • Status: Expired due to Fees
First Claim
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1. A surveillance camera and illuminator combination unit comprising:

  • an enclosure;

    a surveillance camera disposed within the enclosure and operative to generate images within a predetermined field of view of a surveillance area, the field of view comprising areas of different distance from the camera and illuminator combination unit, the field of view having a central axis; and

    a plurality of infrared illuminators disposed within the enclosure on opposing sides of the surveillance camera each having an illumination axis, each illumination axis being directed towards a different distant portion of the field of view, each illumination axis being non-parallel with the central axis wherein the combined infrared light from the plurality of illuminators forms a cone of illumination that extends outwards from the enclosure along a combined illumination axis that is offset from the central axis and where the cone of illumination has a smaller relative size than the field of view of the surveillance camera.

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