An Imaging Spectroradiometry System for Measuring Spatial Temperature Distributions in Microscopic Objects

摘要

An imaging-spectrometry method for measuring the spatial distributions of the temperature of microscopic objects with nonuniform spectral-emissivity distributions over their surfaces is described. An acousto-optic imaging spectrometer that allows measurements of the temperature distributions in the range of 500-5000 K with an error of similar to 1% and a spatial resolution of 500 x 500 elements over the surfaces of objects with dimensions of at most 5 mm was developed and manufactured. The efficiency of the instrument was demonstrated experimentally in measurements of the spatial distribution of the temperature of a laser-heated tungsten plate.