Portable light source and system for use in leak detection

  • US 6,355,935 B1
  • Filed: 10/29/1999
  • Issued: 03/12/2002
  • Est. Priority Date: 02/08/1996
  • Status: Expired due to Term
First Claim
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1. A light source for examination of a substance which emits light at a wavelength greater than a wavelength of light emitted from the light source when the substance is excited by the wavelength of light emitted from the light source, the light source comprising:

  • a housing having a light outlet;

    a lamp positioned in the housing; and

    a dichroic filter positioned in the housing between the lamp and the light outlet, wherein the filter restricts the wavelengths of light emitted from the lamp so that the wavelengths of the light emitted from the light source through the light outlet is within a predetermined range effective to enhance the detection of emission of light from a substance when the substance is excited by the wavelength of light emitted from the light source.

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