公开(公告)号：US06175113B1

公开(公告)日：2001-01-16

申请号：US09043496

申请日：1998-03-27

申请人： Timothy Ashley ,  Charles T. Elliott ,  Neil T. Gordon ,  Ralph S. Hall

发明人： Timothy Ashley ,  Charles T. Elliott ,  Neil T. Gordon ,  Ralph S. Hall

IPC分类号： G01J530

CPC分类号： H04N5/33 ,  G01J5/522 ,  H04N5/3651

摘要： A thermal imaging system (10) which is accoupled and by scanning recreates a thermal image by superimposing measured variations in infrared emission from a scene (22) onto a reference level supplied by a light emitting diode (28). The diode (28) is both a positive and negative luminescent emitter. Emitted flux is current controlled to be equivalent to black body radiation at a range of temperatures which may be colder or hotter than ambient. A signal generated with the system (10) switches between scene and diode observation is a measure of the difference between the mean scene temperature and the diode effective temperature. In response to this digital, control means adjust the bias current through the diode (28) in order to reduce the temperature difference. The reference temperature converges towards the mean scene temperature as this process is repeated. Absolute temperature is thus restored and some image defects removed.

摘要翻译： 通过将来自场景（22）的红外发射中的测量变化叠加到由发光二极管（28）提供的参考电平上而被耦合并通过扫描重新产生热图像的热成像系统（10）。 二极管（28）既是正的和负的发光发射器。 电流通量控制在相当于在比环境温度更冷或更热的温度范围内的黑体辐射。 通过系统（10）产生的信号在场景和二极管观测之间切换是平均场景温度和二极管有效温度之间差异的度量。 响应于该数字，控制装置调节通过二极管（28）的偏置电流，以便降低温度差。 当该过程重复时，参考温度趋向于平均场景温度。 因此恢复绝对温度并消除一些图像缺陷。