From the category archives:

Coatings

What the Heck is (Spectral) Emissivity?

February 10, 2010

Part One of Two from the mind of FLIR
It starts:
Fill two soda cans with hot water and wrap one with scotch tape. Which one will radiate more heat?
You might be surprised at the answer
(It has all to do with Spectral Emissivity, although this video continues the illusion that it’s really simple “Emissivity” at work! The [...]

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Electro Optical Industries BB Emissivity Coatings

November 5, 2009

Electro Optical Industries (EOI) uses one of two high emissivity coatings on the surface of its blackbodies.
The EOI mid-temperature coating is used on both cavity and flat plate blackbodies that have a maximum operating temperatures of up to 210 °C.

Read the rest by visiting their webpage at: www.electro-optical.com/html/bb_rad/emissivity/emis_data.asp

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Exact spectral emissivity measurements for radiation thermometry (IR thermometry)

July 17, 2008

Modern emissivity measuring facility for industry-orientated calibrations developed at PTB
This news release is available in German.
CAPTION: Local variation of the directed spectral emissivity of a car paint sample at a wavelength of 4 µm, measured using a thermography camera. (IMAGE COURTESY PTB)
Industry and research are increasingly relying on non-contact temperature measurements with the aid of [...]

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ET10 Reflectometer Measures Emissivity

March 21, 2008

San Diego CA, USA –Surface Optics’ ET10 measures emissivity values in two most commonly used spectral regions, 3 to 5 and 8 to 12 microns.
Its main application is to produce emissivity values for the infrared cameras.
Advanced IR cameras require the input of an emissivity value for accurate temperature calculations. The emissivity values obtained from tables [...]

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Spectral emittance – spectrally selective solar absorbing layers

March 15, 2008

Infrared spectral emittance profiles of spectrally selective solar absorbing layers at elevated temperatures
D. E. Soule and D. W. Smith
Applied Optics, Vol. 16, Issue 11, pp. 2818- (1977)

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Infrared Emission Spectroscopy of Polymer Reactions

March 11, 2008

Noninvasive Polymer Reaction Monitoring by Infrared Emission Spectroscopy with Multivariate Statistical Modeling
Randy J. Pell, James B. Callis, and Bruce R. Kowalski
Applied Spectroscopy, Vol. 45, Issue 5, pp. 808-818 (1991)
Abstract
“Infrared absorption and emission spectroscopy have been used to monitor the curing of a commercial paint product. Principal component analysis of the absorption data indicates that three [...]

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Spectral Reflectivity of Epner Laser Gold

December 12, 2007

(CLICK ON GRAPH TO ENLARGE)
Almost everyone who attends the SPIE DSS Exposition has received a gold-plated paper clip from Mr. David Epner, personally. Well, the gold costing that Epner supplies to the optics industry has some interesting infrared reflectance (and emittance) properties.
Those properties, specifically the hemispherical spectral reflectivity in the near, mid and far infrared [...]

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