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Misalignment Effects on Power Gathered by Optical Fiber Pyrometer.

Salvador Vargas1, Alberto Tapetado2, Carmen Vázquez2

  • 1Electrical Engineering Faculty, Universidad Tecnológica de Panamá, Ave. Universidad Tecnológica, El Dorado, Panamá 0819-07289, Panama.

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Summary
This summary is machine-generated.

This study models misalignments in fiber-optic pyrometers, crucial for accurate temperature measurement in advanced manufacturing. Precise alignment minimizes errors, ensuring reliable optical power collection and reducing thermal measurement inaccuracies.

Keywords:
emissivityfinite hot spotlateral displacementmetrologymisalignment effectsmodelingoptical fiber sensorpyrometertemperaturetilting angle

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Area of Science:

  • Optical Engineering
  • Metrology
  • Thermal Measurement

Background:

  • Fiber-optic pyrometers are vital for non-contact temperature measurement.
  • Misalignments in optical systems can lead to significant measurement errors.
  • Accurate calibration is essential for reliable pyrometer performance in industrial applications.

Purpose of the Study:

  • To develop a model analyzing optical power misalignment in fiber-optic pyrometers.
  • To investigate the impact of tilting angles and lateral displacement on measurement accuracy.
  • To provide insights for improved alignment and calibration procedures in advanced manufacturing.

Main Methods:

  • A theoretical model was developed considering fiber parameters (diameter, numerical aperture), target size, and distance.
  • Simulations were performed to assess the combined effects of tilting angle and lateral displacement.
  • The model incorporates emissivity angle dependence for comprehensive analysis.

Main Results:

  • Simultaneous influence of tilting angle and lateral displacement on optical power was analyzed.
  • Lateral misalignment below 15 µm showed negligible impact for a 160 µm object size and 60° tilt.
  • Displacement influence varied with direction for a fixed tilting angle.

Conclusions:

  • The developed model offers key insights for aligning fiber-optic pyrometers.
  • Understanding misalignment effects is critical for avoiding temperature measurement errors.
  • This research aids in optimizing pyrometer calibration for advanced manufacturing processes.