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Updated: Jun 17, 2026

Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere
Published on: April 30, 2018
Integrating sphere for the infrared
1Aveo Corporation, Research and AdvancedDevelopment Division, Wilmington, Massachusetts 01887, USA.
Abstract:
An integrating sphere of simple construction has been developed for the ir. It has a high efficiency that is not materially affected by aging processes. Experimental measurements of the relative efficiency of this sphere have been made for the wavelength range from 1 micro to 2.6 micro. These data agree with theoretical predictions. It was also predicted that the efficiency of the sphere would increase from 2 micro through to the millimeter wavelength range. The measurements show the ir sphere to have a higher efficiency (2.5 times higher at 2.6 micro) than the conventional MgO-coated integrating sphere.
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