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Presence Detector and Method for Estimating an Audience

  • US 20100162285A1
  • Filed: 03/08/2010
  • Published: 06/24/2010
  • Est. Priority Date: 09/11/2007
  • Status: Abandoned Application
First Claim
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1. A presence detector for detecting an audience, comprising:

  • a plurality of pyroelectric detectors for capturing thermal signals emitted by the audience;

    a plurality of lenses, wherein each lens is positioned in front of a pyroelectric detector; and

    one or more microprocessors connected to said plurality of pyroelectric sensors for translating thermal signals created by the plurality of pyroelectric detectors to data signals representing the estimated number of people in the audience.

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