-
1.发明授权Polarized elastic scatter detection method and system of tracking and measuring the velocity of individual aerosol particles 有权极化弹性散射检测方法和跟踪和测量单个气溶胶粒子速度的系统公开(公告)号：US08213010B2
公开(公告)日：2012-07-03
申请号：US12554567
申请日：2009-09-04
IPC分类号： G01N21/00
CPC分类号： G01N21/21 , G01N21/53 , G01N21/6402
摘要： Measuring and tracking velocity of individual aerosol particles in a bio-threat detection system are accomplished using a single beam laser source in combination with a birefringent crystal that splits the laser beam into two beams having orthogonal polarization. Scattered light is collected with an elliptical reflector and directed into two detection channels, sampling total elastic scatter in the first channel and sampling polarized elastic scatter in the second channel. The difference in intensity of the scattered light in the polarized channel is used to identify the position of the particles. By taking the ratio of signal output from the polarized detector to the total scatter detector, a threshold level can be established to determine the presence of particles traversing the two beams. The particles are time stamped as they traverse the two beams and the time difference between the pulses can be used to measure the velocity of the particles.
摘要翻译： 生物威胁检测系统中单个气溶胶颗粒的测量和跟踪速度是使用单束激光源与双折射晶体组合实现的，双折射晶体将激光束分成具有正交偏振的两束光束。 散射光用椭圆反射器收集并且被引导到两个检测通道中，对第一通道中的总弹性散射采样，并在第二通道中采样极化弹性散射。 使用极化通道中的散射光的强度差来识别粒子的位置。 通过采用从极化检测器输出的信号与总散射检测器的比率，可以建立阈值水平以确定穿过两个光束的粒子的存在。 颗粒在穿过两个光束时被时间戳，并且脉冲之间的时间差可以用于测量颗粒的速度。
-
2.发明申请DEEP-UV LED AND LASER INDUCED FLUORESCENCE DETECTION AND MONITORING OF TRACE ORGANICS IN POTABLE LIQUIDS 有权DEEP-UV LED和激光诱导荧光检测和监测可溶性液体中的痕量有机物公开(公告)号：US20120001094A1
公开(公告)日：2012-01-05
申请号：US12887948
申请日：2010-09-22
IPC分类号： G01N21/64
CPC分类号： G01J3/02 , G01J3/0208 , G01J3/0218 , G01J3/0235 , G01J3/0264 , G01J3/027 , G01J3/0297 , G01J3/4406 , G01N21/6402 , G01N21/6408 , G01N33/1826 , G01N33/1846 , G01N2021/6471 , G01N2021/6484 , Y02A20/206
摘要： An apparatus for measuring fluorescence of potable liquids contained within an optical quartz cell includes a deep UV laser or a compact UV LED that generates a light beam. A UV blocking and visible light transmitting optical filter reduces out-of-band emission from the LED. The optical quartz cell is between a pair of plane mirrors so that light from the light source travels through it several times. A concave mirror collects a fluorescence signal and has a common optical axis with a lens. The common optical axis is normal to an optical axis of the light beam. The concave mirror and lenses are positioned on opposite sides of the optical quartz cell. A fluorescence detector is in optical alignment with the concave mirror and the lens. A boxcar averager is in electrical communication with the fluorescence detector. Optical wavelength selection of the fluorescence emission uses optical filters or a spectrometer.
摘要翻译： 用于测量包含在光学石英单元内的饮用液体的荧光的装置包括产生光束的深UV激光或紧凑型UV LED。 UV阻挡和可见光透射滤光器减少了LED的带外发射。 光学石英单元位于一对平面镜之间，使得来自光源的光穿过它几次。 凹面镜收集荧光信号并具有与透镜共同的光轴。 共同的光轴垂直于光束的光轴。 凹面镜和透镜位于光学石英单元的相对侧上。 荧光检测器与凹面镜和透镜光学对准。 盒式电视平均机与荧光检测器电连通。 荧光发射的光波长选择使用光学滤波器或光谱仪。
-
3.发明授权Deep-UV LED and laser induced fluorescence detection and monitoring of trace organics in potable liquids 有权深紫外LED和激光诱导荧光检测和监测饮用液体中的痕量有机物公开(公告)号：US08467059B2
公开(公告)日：2013-06-18
申请号：US12887948
申请日：2010-09-22
CPC分类号： G01J3/02 , G01J3/0208 , G01J3/0218 , G01J3/0235 , G01J3/0264 , G01J3/027 , G01J3/0297 , G01J3/4406 , G01N21/6402 , G01N21/6408 , G01N33/1826 , G01N33/1846 , G01N2021/6471 , G01N2021/6484 , Y02A20/206
摘要： An apparatus for measuring fluorescence of potable liquids contained within an optical quartz cell includes a deep UV laser or a compact UV LED that generates a light beam. A UV blocking and visible light transmitting optical filter reduces out-of-band emission from the LED. The optical quartz cell is between a pair of plane mirrors so that light from the light source travels through it several times. A concave mirror collects a fluorescence signal and has a common optical axis with a lens. The common optical axis is normal to an optical axis of the light beam. The concave mirror and lenses are positioned on opposite sides of the optical quartz cell. A fluorescence detector is in optical alignment with the concave mirror and the lens. A boxcar averager is in electrical communication with the fluorescence detector. Optical wavelength selection of the fluorescence emission uses optical filters or a spectrometer.
摘要翻译： 用于测量包含在光学石英单元内的饮用液体的荧光的装置包括产生光束的深UV激光或紧凑型UV LED。 UV阻挡和可见光透射滤光器减少了LED的带外发射。 光学石英单元位于一对平面镜之间，使得来自光源的光穿过它几次。 凹面镜收集荧光信号并具有与透镜共同的光轴。 共同的光轴垂直于光束的光轴。 凹面镜和透镜位于光学石英单元的相对侧上。 荧光检测器与凹面镜和透镜光学对准。 盒式电视平均机与荧光检测器电连通。 荧光发射的光波长选择使用光学滤波器或光谱仪。
-
4.发明申请POLARIZED ELASTIC SCATTER DETECTION METHOD AND SYSTEM OF TRACKING AND MEASURING THE VELOCITY OF INDIVIDUAL AEROSOL PARTICLES 有权极化弹性散射体检测方法及跟踪和测量个体嗜酸粒细胞的速度的系统公开(公告)号：US20120105849A1
公开(公告)日：2012-05-03
申请号：US12554567
申请日：2009-09-04
IPC分类号： G01N21/00
CPC分类号： G01N21/21 , G01N21/53 , G01N21/6402
摘要： Measuring and tracking velocity of individual aerosol particles in a bio-threat detection system are accomplished using a single beam laser source in combination with a birefringent crystal that splits the laser beam into two beams having orthogonal polarization. Scattered light is collected with an elliptical reflector and directed into two detection channels, sampling total elastic scatter in the first channel and sampling polarized elastic scatter in the second channel. The difference in intensity of the scattered light in the polarized channel is used to identify the position of the particles. By taking the ratio of signal output from the polarized detector to the total scatter detector, a threshold level can be established to determine the presence of particles traversing the two beams. The particles are time stamped as they traverse the two beams and the time difference between the pulses can be used to measure the velocity of the particles.
摘要翻译： 生物威胁检测系统中单个气溶胶颗粒的测量和跟踪速度是使用单束激光源与双折射晶体组合实现的，双折射晶体将激光束分成具有正交偏振的两束光束。 散射光用椭圆反射器收集并且被引导到两个检测通道中，对第一通道中的总弹性散射采样，并在第二通道中采样极化弹性散射。 使用极化通道中的散射光的强度差来识别粒子的位置。 通过采用从极化检测器输出的信号与总散射检测器的比率，可以建立阈值水平以确定穿过两个光束的粒子的存在。 颗粒在穿过两个光束时被时间戳，并且脉冲之间的时间差可以用于测量颗粒的速度。
-
5.发明授权公开(公告)号：US07812946B1
公开(公告)日：2010-10-12
申请号：US11926196
申请日：2007-10-29
IPC分类号： G01J3/30
CPC分类号： G01J3/4406 , G01J3/02 , G01J3/0208 , G01J3/0218 , G01J3/0235 , G01J3/0264 , G01J3/027 , G01J3/0297 , G01N21/6402 , G01N21/6408 , G01N33/1826 , G01N2021/6471 , G01N2021/6484 , Y02A20/206
摘要： A method for detecting trace levels of dissolved organic compounds and leached plastic compounds in drinking water includes the steps of employing deep ultraviolet light-emitting diode induced fluorescence at sensitivity levels of several parts per trillion in real time so that a more compact and inexpensive excitation source, relative to a deep UV laser-induced fluorescence, for fluorescence detection of dissolved organic compounds in water is provided. The deep UV light-emitting diode is operated at an excitation near 265 nm and the laser induced fluorescence is detected at an emission near 450 nm to 500 nm for the dissolved organic compounds and near 310 nm for leached plastic compounds. Optical absorption filters and optical bandpass filters are employed to reduce out-of-band light emitting diode emissions and to eliminate second order optical interference signals for the detection of a fluorescence signal near 450 nm to near 500 nm. The system can measure water contained within a quartz optical cell, within bottled water containers, or in a flowing stream of water.
摘要翻译： 用于检测饮用水中溶解的有机化合物和浸出的塑料化合物的痕量水平的方法包括以下实施方式：实际使用深度紫外发光二极管诱导的荧光，灵敏度为几万亿分之几，使得更紧凑和便宜的激发源 ，相对于深紫外激光诱导的荧光，用于在水中溶解的有机化合物的荧光检测。 深紫外发光二极管在265nm附近的激发下操作，激光诱导的荧光在溶解的有机化合物附近的450nm到500nm的发射下被检测，而对于浸出的塑料化合物，激光诱导的荧光在310nm附近被检测到。 采用光吸收滤光器和光带通滤波器来减少带外发光二极管发射，并消除二阶光干涉信号，以检测450nm至500nm附近的荧光信号。 该系统可以测量石英光学电池内，瓶装水容器内或流动的水流中所含的水。
-
-
-
-
搜索结果
5 条记录 (耗时 0.009 秒)
