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Selectable field motion detector

  • US 7,902,508 B2
  • Filed: 07/21/2008
  • Issued: 03/08/2011
  • Est. Priority Date: 07/21/2008
  • Status: Active Grant
First Claim
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1. A motion sensor comprising:

  • a) a modulator having an output with a shaped response to received radiation emissions from a range of different detection fields, wherein the modulator includes lenses that are separately mounted to a tubular housing and wherein each of the lenses are configured to be moved into alignment with the sensor by sliding the tubular housing in and out of a member with an aperture to form the range of different detection fields; and

    b) a sensor configured to detect the output.

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