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Corrections

Joseph C. Richmond, "Reflectance errors in infrared thermography: errata," Appl. Opt. 19, 2272-2272 (1980)
https://www.osapublishing.org/ao/abstract.cfm?uri=ao-19-14-2272

References

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  1. A. Gouffé, Temperature Correction of Artificial Blackbodies, Taking Multiple Internal Diffusion into Consideration, NRL Translation 429, translated from Rev. Opt. 24, 1 (Jan.–Mar. 1945).
  2. D. G. Moore, “Investigation of Shallow Reference Cavities for High-Temperature Emittance Measurements,” in Measurement of Thermal Radiation Properties of Solids, NASA SP 31, J. C. Richmond, Ed. (U.S. GPO, Washington, D.C., 1962), pp. 515–525. The derivation of the Gouffé equation is the Appendix of this reference.

1945 (1)

A. Gouffé, Temperature Correction of Artificial Blackbodies, Taking Multiple Internal Diffusion into Consideration, NRL Translation 429, translated from Rev. Opt. 24, 1 (Jan.–Mar. 1945).

Gouffé, A.

A. Gouffé, Temperature Correction of Artificial Blackbodies, Taking Multiple Internal Diffusion into Consideration, NRL Translation 429, translated from Rev. Opt. 24, 1 (Jan.–Mar. 1945).

Moore, D. G.

D. G. Moore, “Investigation of Shallow Reference Cavities for High-Temperature Emittance Measurements,” in Measurement of Thermal Radiation Properties of Solids, NASA SP 31, J. C. Richmond, Ed. (U.S. GPO, Washington, D.C., 1962), pp. 515–525. The derivation of the Gouffé equation is the Appendix of this reference.

Rev. Opt. (1)

A. Gouffé, Temperature Correction of Artificial Blackbodies, Taking Multiple Internal Diffusion into Consideration, NRL Translation 429, translated from Rev. Opt. 24, 1 (Jan.–Mar. 1945).

Other (1)

D. G. Moore, “Investigation of Shallow Reference Cavities for High-Temperature Emittance Measurements,” in Measurement of Thermal Radiation Properties of Solids, NASA SP 31, J. C. Richmond, Ed. (U.S. GPO, Washington, D.C., 1962), pp. 515–525. The derivation of the Gouffé equation is the Appendix of this reference.

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Figures (1)

Fig. 1
Fig. 1

Reflectance errors in radiance temperatures computed from IR thermography images taken in a closed room with average temperature of 300 K for surfaces of emittances indicated at the ends of the curves. Positive errors (points above the zero line) indicate that the measured temperatures are too high by the indicated amount.

Tables (1)

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Table I Apparent Radiance Temperature for Indicated True Temperature and Emittancea

Equations (8)

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c = [ 1 + ( 1 - ) ( s S - s S 0 ) ] ( 1 - s / S ) + s / S ,
c = 0.8 [ 1 + 0.2 ( 1.5 142 - 1.5 49 π ) ] 0.8 ( 1 - 1.5 142 ) + 1.5 142 , c = 0.800131 0.802113 = 0.9975.
n = d L λ L λ · ( d T T ) - 1 = c 2 / λ T exp ( c 2 / λ T ) exp ( c 2 / λ T ) - 1 .
n = 5 · 2898 λ T .
c = w [ 1 + ( 1 - w ) ( s S - T a 10 T c 10 · s S 0 ) + ( 1 - a ) ( s S 0 ) ] w ( 1 - s S ) + s S ,
c = 0.8 [ 1 + 0.2 ( 1.5 142 - 260 10 300 10 · 1.5 49 π ) + 0.2 ( 1.5 142 · 1.5 49 π ) ] 0.8 ( 1 - 1.5 142 ) + 1.5 142 = 0.801629 0.802113 = 0.9994.
L s = s c 1 · π - 1 · λ - 5 · exp ( - c 2 / λ T 1 ) + ( 1 - s ) c 1 · λ - 5 · π - 1 exp ( - c 2 / λ T c ) ,
L s = c 1 π - 1 · λ - 5 · e - c 2 / λ T s

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