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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 16, Iss. 5 — May. 1, 1999
  • pp: 1059–1065

Calculation of the effective emissivity of a cavity having non-Lambertian isothermal surfaces

Y. Ohwada  »View Author Affiliations

JOSA A, Vol. 16, Issue 5, pp. 1059-1065 (1999)

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A method to calculate the directional local effective emissivity for a cavity having non-Lambertian isothermal surfaces is presented. Numerical calculation is carried out for a cylindrocone. The directional local effective emissivity directed to the cavity bottom is smaller than that directed to the cavity opening, and the local effective emissivity for a Lambertian takes a value close to the middle. The integrated effective emissivities are computed for a nonimaging system and an imaging optical system.

© 1999 Optical Society of America

OCIS Codes
(080.2720) Geometric optics : Mathematical methods (general)
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(120.5700) Instrumentation, measurement, and metrology : Reflection
(120.6780) Instrumentation, measurement, and metrology : Temperature

Original Manuscript: July 24, 1998
Revised Manuscript: December 17, 1998
Manuscript Accepted: December 23, 1998
Published: May 1, 1999

Y. Ohwada, "Calculation of the effective emissivity of a cavity having non-Lambertian isothermal surfaces," J. Opt. Soc. Am. A 16, 1059-1065 (1999)

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