Thermographic infrared cameras are disclosed that comprise an infrared image sensor having linearly positioned thermosensing elements. A physical property of each thermosensing element changes in proportion to a corresponding temperature change caused by infrared irradiation incident on the thermosensing...http://www.google.fr/patents/US5994699?utm_source=gb-gplus-shareBrevet US5994699 - Thermal camera for infrared imaging
