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Systems and methods for regulating temperature and illumination intensity at the distal tip of an endoscope

  • US 10,130,246 B2
  • Filed: 05/02/2016
  • Issued: 11/20/2018
  • Est. Priority Date: 06/18/2009
  • Status: Active Grant
First Claim
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1. An endoscopy system comprising:

  • an endoscope having a tip;

    a plurality of viewing elements located at the endoscope tip, wherein each of said viewing elements comprises an image sensor having a field of view illuminated by one or more light emitting diode (LED) illuminators;

    a circuit board comprising a circuit for measuring a voltage across each of said LED illuminators; and

    a controller programmed to compute a temperature of each of said LED illuminators by using said measured voltage and a function representing a relationship between LED voltage and LED junction temperature for a given current,wherein the controller is further programmed to compute an average of LED junction temperatures and use that average to compute the temperature at a given point on the endoscope tip, andwherein a relationship between the average of LED junction temperatures and the temperature at the given point on the endoscope tip is pre-determined by measuring an average LED junction temperature and a corresponding temperature at the given point on the endoscope tip for a range of LED currents and identifying a relationship between average LED junction temperatures and temperatures for the given point on the endoscope tip.

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