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Fiber optic probe system

  • US 4,851,817 A
  • Filed: 03/10/1986
  • Issued: 07/25/1989
  • Est. Priority Date: 03/10/1986
  • Status: Expired due to Fees
First Claim
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1. A system for detection of a change in and a condition of a selected environment comprising:

  • a light source means for continuously generating a beam of light;

    a light receiving and signal generating means for continuously receiving light from said light source means and for generating variable signals dependent upon the amount of light received;

    fiber optic means made of a continuous uninterrupted length of fiber optic material for connecting said light source means to said light receiving and signal generating means and for providing a continuous light path therebetween for continuously transmitting said beam of light from said light source means to said light receiving means along a substantially confined light path;

    cover means for said fiber optic means for defining the substantially confined light path;

    a sensor portion comprising a peripheral outer surface of said fiber optic means and being uncovered by said cover means and located in the selected environment and being constructed and arranged to cause substantial loss of light in said sensor portion dependent on environmental conditions whereby variable output signals generated by said light receiving and signal generating means vary substantially in accordance with environmental conditions; and

    condition indicating means connected to said light receiving and signal generating means for indicating changes in environmental conditions.

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