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US 5,957,581 AGranted
Temperature measurement by active photothermal radiometry
OwnerAbraham Katzir, Ophir Eyal +1inventors
InventorsAbraham Katzir, Ophir Eyal, Vered Scharf
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Abstract
A method of active radiometric thermometry. The target, whose temperature is to be measured, is heated briefly and locally, preferably by a pulse of laser radiation. The intensity of infrared or visible radiation emitted by the heated portion of the target is measured as a function of time. The temperature of the target is inferred from the shape of the intensity curve of the emitted radiation as a function of time.
Claims22
A method for measuring a temperature of a target, comprising the steps of:
- (a) heating at least a portion of the target, thereby inducing an emission of emitted measurement electromagnetic radiation by said portion of the target, said emitted measurement electromagnetic radiation having at least one intensity;
- (b) receiving at least a portion of said emitted measurement electromagnetic radiation;
- (c) measuring said at least one intensity of said portion of said emitted measurement electromagnetic radiation;
- (d) calculating at least one normalized measurement parameter of said at least one intensity of said portion of said emitted measurement electromagnetic radiation;
- and
- (e) inferring the temperature of the target from said at least one normalized measurement parameter.
3 more elements
Dependencies are inferred from the claim text.