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1. 发明申请

WO1997018448A1 INFRARED OPTICAL SYSTEM 审中-公开
标题翻译：红外光学系统
公开(公告)号：WO1997018448A1
公开(公告)日：1997-05-22
申请号：PCT/GB1996002777
申请日：1996-11-11
申请人： THE SECRETARY OF STATE FOR DEFENCE , ASHLEY, Timothy , ELLIOTT, Charles, Thomas , GORDON, Neil, Thomson , HALL, Ralph, Stephen
发明人： THE SECRETARY OF STATE FOR DEFENCE
IPC分类号： G01J05/06
CPC分类号： G01J5/06
摘要： An infrared optical system (100) incorporates a lens (118) imaging a remote scene onto a detector (112) within a cold shield (114). Stray radiation incident on the detector (112) is reduced by an optical stop in the form of a light emitting diode (LED) (126) producing negative luminescence. The LED (126) emits less radiation than background, and contributes less to the detector photon noise than an optical stop not exhibiting negative luminescence.
摘要翻译：红外光学系统（100）将将遥控场景成像的透镜（118）结合到冷屏（114）内的检测器（112）上。通过产生负发光的发光二极管（LED）（126）形式的光学停止来减少入射在检测器（112）上的杂散辐射。 LED（126）比背景发射的辐射更少，并且对于不具有负发光的光学停止，对检测器光子噪声的贡献较小。

2. 发明申请

WO1997013358A1 THERMAL IMAGING SYSTEM 审中-公开
标题翻译：热成像系统
公开(公告)号：WO1997013358A1
公开(公告)日：1997-04-10
申请号：PCT/GB1996002347
申请日：1996-09-24
申请人： THE SECRETARY OF STATE FOR DEFENCE , ASHLEY, Timothy , ELLIOTT, Charles, Thomas , GORDON, Neil, Thomson , HALL, Ralph, Stephen
发明人： THE SECRETARY OF STATE FOR DEFENCE
IPC分类号： H04N05/33
CPC分类号： H04N5/33 , G01J5/522 , H04N5/3651
摘要： A thermal imaging system (10) which is accoupled and operates 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 when 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：通过扫描进行交配并操作的热成像系统（10）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）提供的参考水平上而重新产生热图像。二极管（28）既是正的和负的发光发射器; 电流控制在与环境温度相比较冷或较热的温度范围内等同于黑体辐射。当系统（10）在场景和二极管观察之间切换时产生的信号是平均场景温度和二极管有效温度之间的差的度量。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。

3. 发明申请

WO1997005742A1 THERMAL SENSING SYSTEM HAVING A FAST RESPONSE CALIBRATION DEVICE 审中-公开
标题翻译：具有快速响应校准装置的热传感系统
公开(公告)号：WO1997005742A1
公开(公告)日：1997-02-13
申请号：PCT/GB1996001805
申请日：1996-07-29
申请人： THE SECRETARY OF STATE FOR DEFENCE , ASHLEY, Timothy , ELLIOTT, Charles, Thomas , GORDON, Neil, Thomson , HALL, Ralph, Stephen
发明人： THE SECRETARY OF STATE FOR DEFENCE
IPC分类号： H04N05/33
CPC分类号： H04N5/3651 , F41G7/001 , F41G7/2253 , F41G7/2293 , H04N5/33
摘要： A thermal sensing system (10) including an array of photon detectors (14) produces a detector-dependent response to irradiation. Variations in individual detector characteristics produce a fixed pattern noise which degrades an image or other response. A switchable mirror (M1) may at one position (Pcal) direct infrared radiation from a light emitting diode (20) onto the detector array (14). The diode (20) is both a negative and positive luminescent emitter; the flux emitted is current controlled to be equivalent to black body radiation at a range of temperatures both colder and hotter than ambient. Calibration relationships comprising transfer functions relating incident intensity to signal response are derived for each detector. Alternatively the mirror (M1) may be at an observation position (Pobs) and infrared radiation from a remote scene reaches the detector array (14). Resulting detector signals are converted into corrected fluxes using individual calibration relationships previously derived and an image or response with reduced fixed pattern noise is obtained.
摘要翻译：包括光子检测器（14）阵列的热感测系统（10）产生对照射的依赖于检测器的响应。单个检测器特性的变化产生固定模式噪声，降低图像或其他响应。可切换镜（M1）可以在从发光二极管（20）到检测器阵列（14）的一个位置（Pcal）的直接红外辐射。二极管（20）既为负发光发射极; 在比环境温度更冷和更热的温度范围内，发射的通量被电流控制为等于黑体辐射。对于每个检测器导出包括将入射强度与信号响应相关联的传递函数的校准关系。或者，反射镜（M1）可以在观察位置（Pobs）处，并且来自远程场景的红外辐射到达检测器阵列（14）。得到的检测器信号使用先前导出的各个校准关系被转换成校正的通量，并且获得具有降低的固定模式噪声的图像或响应。

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