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UV light intensity detector in a water treatment system

  • US 6,569,319 B2
  • Filed: 06/26/2002
  • Issued: 05/27/2003
  • Est. Priority Date: 06/21/1999
  • Status: Expired due to Term
First Claim
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1. A point-of-use water treatment system comprising:

  • a base unit including a light intensity detector;

    a lamp assembly including an outer housing;

    a bulb assembly and a light pipe disposed at least partially in said housing, the bulb assembly including an axis and emitting UV and visible light when the lamp assembly is energized, the light pipe containing a fluorescent dye which converts UV light to visible light, the light pipe including a plurality of contiguous internal facets angled relative to one another and focusing the visible light on the light intensity detector; and

    wherein the light intensity detector detects visible light emitted from the light pipe to determine the relative intensity of the UV light produced by the bulb assembly.

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