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Fluid dispenser having infrared user sensor

  • US 20090000023A1
  • Filed: 06/27/2007
  • Published: 01/01/2009
  • Est. Priority Date: 06/27/2007
  • Status: Active Grant
First Claim
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1. A hands-free dispenser for dispensing a product into a target area, comprising:

  • a dispensing mechanism;

    a light emitting diode associated with said dispensing mechanism;

    a controller; and

    a photodetector associated with said light emitting diode that detects light levels of a target area and which generates a voltage received by said controller that corresponds to detected light levels, wherein said controller compares a Momentary Difference Value in said voltage to an Average Difference value in said voltage plus a Target Offset value, said controller sending a signal to said dispensing mechanism when said Momentary Difference value is greater than said Average Difference Value plus said Target Offset value.

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