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Ranging apparatus

  • US 7,589,825 B2
  • Filed: 11/11/2003
  • Issued: 09/15/2009
  • Est. Priority Date: 11/11/2002
  • Status: Expired due to Fees
First Claim
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1. A ranging apparatus comprising:

  • an illumination means for illuminating a scene with a projected two dimensional array of light spots;

    a detector for detecting the location of each of said spots in the scene; and

    a processor adapted to determine, from the detected location of said spots in the scene, the range to those spots, wherein the illumination means comprises a light source arranged to illuminate only part of the input face of a light guide, the light guide comprising a tube having substantially reflective sides and being arranged together with projection optics so as to project an array of distinct light spots towards the scene.

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