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Fiber probe device having multiple diameters

  • US 5,394,500 A
  • Filed: 12/22/1993
  • Issued: 02/28/1995
  • Est. Priority Date: 12/22/1993
  • Status: Expired due to Term
First Claim
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1. A probe device comprising:

  • a fiber segment having a relatively thick upper region terminating at its lower extremity in a first tapered region that terminates in a cylindrical intermediate region, the cylindrical intermediate region terminating at its lower extremity in a second tapered region that terminates in a lowest cylindrical region;

    the upper region, the cylindrical intermediate region, and the lowest cylindrical region having respective maximum widths that are monotonically decreasing;

    the lowest cylindrical region having a maximum width in the approximate range of 0.01 μ

    m to 150 μ

    m and terminating at its lower extremity in an essentially planar end surface oriented perpendicular to the axis of the lowest cylindrical region; and

    the intermediate cylindrical region having a height and a maximum width in a ratio in the approximate rate of 1 to 100.

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