Quantitative surface temperature measurement using two-color the

Details Quantitative surface temperature measurement using two-color the Quantitative surface temperature measurement using two-color the

1988-06-13

1989-12-05

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

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2504591, 2504611, 358113, 374162, H04N 718

Patent

active

048856339

ABSTRACT:
A thermal imaging system provides quantitative temperature information and is particularly useful in hypersonic wind tunnel applications. An object to be measured is prepared by coating with a two-color, ultraviolet-activated, thermographic phosphor. The colors emitted by the phosphor are detected by a conventional color video camera. A phosphor emitting blue and green light with a ratio that varies depending on temperature is used so that the intensity of light in the blue and green wavelengths detected by the blue and green tubes in the video camera can be compared. Signals representing the intensity of blue and green light at points on the surface of a model in a hypersonic wind tunnel are used to calculate a ratio of blue to green light intensity which provides quantitative temperature information for the surface of the model.

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