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Digital cameras with triangulation autofocus systems and related methods

  • US 7,982,794 B2
  • Filed: 03/31/2009
  • Issued: 07/19/2011
  • Est. Priority Date: 05/11/2005
  • Status: Expired due to Fees
First Claim
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1. A method of auto-focusing a digital camera in still image and/or video recording mode, comprising:

  • projecting a plurality of discrete light spots toward a target subject using the digital camera;

    capturing a first viewfinder image of the target subject with the projected light spots in response to the projecting step;

    programmatically calculating a triangulation measure of distance for each of a plurality of the projected light spots in the first viewfinder image; and

    automatically focusing a digital camera lens associated with the digital camera using a closest one of the calculated triangulation measure of distances.

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