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    • 5. 发明申请
    • SOLID CRYOGEN COOLING SYSTEM FOR FOCAL PLANE ARRAYS
    • 用于FOCAL PLANE ARRAYS的固体冷冻冷却系统
    • WO2004027330A2
    • 2004-04-01
    • PCT/US2003/029934
    • 2003-09-19
    • RAYTHEON COMPANY, A DELAWARE CORPORATIONPFLIBSEN, Kent, P.
    • PFLIBSEN, Kent, P.
    • F25D
    • G01S3/781
    • A cryogenic cooling system (12) for cooling electromagnetic energy detectors (50). The cooling system (12) includes a first mechanism (18) that accommodates cryogen fluid in one or more spaces (58, 60). A second mechanism (16,42) freezes the cryogen fluid in the one or more spaces (58, 60) adjacent to the electromagnetic energy detectors (50). In a specific embodiment, the electromagnetic energy detectors (50) comprise an infrared focal plane array (50). The second mechanism (16, 42) includes a heat exchanger (16) that is mounted separately from the first mechanism (18). The one or more spaces (58, 60) are fitted with three-dimensional cooling interface surfaces (62, 64). The three-dimensional cooling surfaces (62, 64) are implemented via a thermally conductive matrix (62, 64). The thermally conductive matrix (62, 64) is a copper metal matrix or carbon/graphite matrix, and the solid cryogen reservoir (18) is a beryllium reservoir (18). The solid cryogen reservoir (18) includes integrated mounting features (52, 54) for mounting the reservoir (18) to a missile housing and a surface for attaching the focal plane array (50) to the reservoir (18). The second mechanism (16, 42) includes a Joule-Thomson orifice (42) that employs the Joule-Thomson effect to cool the cryogen fluid to a solid state. The first mechanism (18) includes a selectively detachable cryogen canister that provides pressurized cryogen fluid to the heat exchanger (16). The heat exchanger (16) directs cooled pressurized cryogen fluid to the solid cryogen reservoir (18) and Joule-Thomson orifice (42) and is positioned remotely from the cryogen reservoir (18). In an illustrative embodiment, the heat exchanger (16) outputs cooled cryogen gas to plural solid cryogen reservoirs (18) to cool plural corresponding infrared focal plane arrays (50). A line cutter selectively detaches the gas canister and/or the heat exchanger (16) from the missile in response control signal from a computer. The computer generates the control signal after a predetermined amount of the cryogen fluid is present in the cryogen reservoir (18) or after a predetermined time interval.
    • 一种用于冷却电磁能量检测器(50)的低温冷却系统(12)。 冷却系统(12)包括在一个或多个空间(58,60)中容纳低温液的第一机构(18)。 第二机构(16,42)使与电磁能量检测器(50)相邻的一个或多个空间(58,60)中的冷冻剂流体冷冻。 在具体实施例中,电磁能量检测器(50)包括红外焦平面阵列(50)。 第二机构(16,42)包括与第一机构(18)分开安装的热交换器(16)。 一个或多个空间(58,60)装配有三维冷却界面(62,64)。 三维冷却表面(62,64)经由导热基体(62,64)来实现。 导热基体(62,64)是铜金属基体或碳/石墨基质,固体冷冻剂储存器(18)是铍储存器(18)。 固体冷冻剂储存器(18)包括用于将储存器(18)安装到导弹壳体和用于将焦平面阵列(50)附接到储存器(18)的表面的一体式安装特征(52,54)。 第二机构(16,42)包括焦耳汤姆森孔口(42),其使用焦耳汤姆森效应将冷冻剂流体冷却至固态。 第一机构(18)包括向热交换器(16)提供加压制冷剂流体的可选择性分离的冷冻剂罐。 热交换器(16)将冷却的加压制冷剂流体引导到固体冷冻剂储存器(18)和焦耳 - 汤姆森孔口(42)并远离冷冻剂储存器(18)定位。 在说明性实施例中,热交换器(16)将冷却的冷冻剂气体输出到多个固体冷冻剂储存器(18)以冷却多个对应的红外焦平面阵列(50)。 线切割器在来自计算机的响应控制信号中选择性地将气体罐和/或热交换器(16)从导弹分离。 在预定量的冷冻剂流体存在于冷冻剂储存器(18)中或在预定的时间间隔之后,计算机产生控制信号。
    • 6. 发明申请
    • SERIALLY ADDRESSED SUB-PUPIL SCREEN FOR IN SITU ELECTRO-OPTICAL SENSOR WAVEFRONT MEASUREMENT
    • 用于位置电光传感器波形测量的串行接地子屏幕
    • WO2013191795A1
    • 2013-12-27
    • PCT/US2013/036609
    • 2013-04-15
    • RAYTHEON COMPANY
    • STREUBER, Casey, T.EASTON, Michael, P.PFLIBSEN, Kent, P.
    • G01J9/00G01M11/02
    • G01J9/00
    • A system and method for wavefront measurement of an EO sensor is performed in-situ using the sensor's EO detector in a manner that disambiguates the local wavefront measurements for different sub-pupils in time and maximizes the dynamic range for measuring the local wavefronts. A single sub-pupil sized optical beam is traced in a spatial, pattern over the EO sensor's entrance pupil to serially illuminate a temporal sequence of sub-pupils to form a serially addressed sub-pupil screen. The EO detector and video card capture a video signal for one sub-pupil at a time as the optical beam traces the spatial pattern. The video signal is routed to a computer processor that generates a spatio-temporal mapping of the spatial positions of the sub-pupils in the sub-pupil screen to the temporal positions of frames in the video signal. The computer processor uses the mapping to process the video signal to compute a wavefront estimate spanning the entrance pupil.
    • EO传感器的波前测量的系统和方法是使用传感器的EO检测器以原位方式进行的,该方法可以及时消除不同子瞳孔的局部波前测量,并最大化用于测量局部波前的动态范围。 单个子光瞳尺寸的光束在EO传感器的入射光瞳上以空间图案进行跟踪,以串行照射子瞳孔的时间序列以形成串行寻址子瞳孔屏幕。 当光束跟踪空间图案时,EO检测器和视频卡一次捕获一个子光瞳的视频信号。 视频信号被路由到计算机处理器,其产生子瞳孔屏幕中的子瞳孔的空间位置到视频信号中的帧的时间位置的时空映射。 计算机处理器使用映射来处理视频信号以计算横跨入射光瞳的波前估计。