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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 4 — Feb. 1, 2007
  • pp: 483–488

Thin-filament pyrometry with a digital still camera

Jignesh D. Maun, Peter B. Sunderland, and David L. Urban  »View Author Affiliations

Applied Optics, Vol. 46, Issue 4, pp. 483-488 (2007)

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A novel thin-filament pyrometer is presented. It involves a consumer-grade color digital still camera with 6 megapixels and 12 bits per color plane. SiC fibers were used and scanning-electron microscopy found them to be uniform with diameters of 13.9   μm . Measurements were performed in a methane–air coflowing laminar jet diffusion flame with a luminosity length of 72   mm . Calibration of the pyrometer was accomplished with B-type thermocouples. The pyrometry measurements yielded gas temperatures in the range of 1400–2200 K with an estimated uncertainty of ± 60   K , a relative temperature resolution of ± 0.215   K , a spatial resolution of 42   μm , and a temporal resolution of 0.66   ms . Fiber aging for 10 min had no effect on the results. Soot deposition was less problematic for the pyrometer than for the thermocouple.

© 2007 Optical Society of America

OCIS Codes
(110.6820) Imaging systems : Thermal imaging
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(120.6780) Instrumentation, measurement, and metrology : Temperature

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: July 17, 2006
Revised Manuscript: September 27, 2006
Manuscript Accepted: September 28, 2006

Jignesh D. Maun, Peter B. Sunderland, and David L. Urban, "Thin-filament pyrometry with a digital still camera," Appl. Opt. 46, 483-488 (2007)

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