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Outer and Inner Diameter Measuring Apparatus and Method for Transparent Tube

  • US 20080198389A1
  • Filed: 05/27/2005
  • Published: 08/21/2008
  • Est. Priority Date: 01/13/2005
  • Status: Abandoned Application
First Claim
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1. An outer and inner diameter measuring apparatus for a transparent tube, comprising:

  • a light beam irradiating means for irradiating a light having a linear sectional shape and inclined at a predetermined angle with respect to a plane perpendicular to a length direction of a transparent tube;

    a pattern obtaining means arranged to face the light beam irradiating means with the tube being interposed therebetween so as to obtain a light beam pattern intercepted and refracted by the tube; and

    a calculating means for extracting inner diameter information of the tube from a pattern refracted by the tube among the light beam pattern obtained by the pattern obtaining means, and calculating and outputting an inner diameter of the tube.

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