Patent ID: 7661876

Claim:
A method for calibrating an infrared target comprising: taking a plurality of first radiance measurements of an infrared target, each of the plurality of radiance measurements being taken with the infrared target heated to one of a plurality of target set temperatures; for each first radiance measurement calculating an apparent temperature of a graybody having a radiance equal to the first radiance measurement and having an emissivity substantially equal to an emissivity setting of an infrared thermometer; mapping each of the apparent temperatures to one of the plurality of set temperatures corresponding to the same one of the plurality of radiance measurements; inputting a calibration temperature into a controller coupled to the infrared target; heating the target to one of the plurality of set temperatures mapped to one of the plurality of apparent temperatures corresponding to the calibration temperature; taking a radiance measurement of the target with the infrared thermometer; and calibrating the infrared thermometer to map the radiance measurement to the calibration temperature.