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Methods and devices for charge management for three-dimensional sensing

  • US 6,906,793 B2
  • Filed: 06/17/2003
  • Issued: 06/14/2005
  • Est. Priority Date: 12/11/2000
  • Status: Expired due to Term
First Claim
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1. For use in a system that illuminates a target with optical energy having a modulated periodic waveform that includes a high frequency component and that detects with at least one photodetector a fraction of said optical energy reflected by said target, a method of improving detection comprising the following steps:

  • providing each said photodetector with means for steering charge generated within said photodetector by said fraction of optical energy to a collection node in said photodetector; and

    collecting at least some of said charge from said collection node.

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