Patent ID: 7632012
Filing Date: 2009-12-15
Classification: G01J

Abstract:
1. A method of measuring temperature comprising: detecting infrared radiation arising at a first wavelength from a first site on a surface of a body when not irradiated by external infrared radiation; detecting infrared radiation arising at said first wavelength from said first site while said first site is irradiated by external infrared radiation at said first wavelength; detecting infrared radiation arising at said first wavelength from a second site, the second site having the same material composition and surface configuration as the first site, on the surface of said body when not irradiated by external infrared radiation; detecting infrared radiation arising at said first wavelength from said second site while said second site is irradiated by external infrared radiation at said first wavelength; detecting infrared radiation arising at a second wavelength from each of said first site and said second site when not irradiated by external infrared radiation; and determining a temperature of said first or second site based on the detection of infrared radiation arising from said first site and said second site.