公开(公告)号：US5894347A

公开(公告)日：1999-04-13

申请号：US75700

申请日：1998-05-11

Applicant: Stuart Gilmour MacDonald

Inventor： Stuart Gilmour MacDonald

IPC: C12Q1/68 ,  G01J3/10 ,  G01N21/64 ,  G01N21/75

CPC classification number: G01N21/64 ,  G01J3/10 ,  G01N21/645 ,  G01N2201/0696 ,  G01N2201/1241

Abstract: A method and fluorimeter for flashing a target at several different levels for detection of fluorescence by a PMT without blinding the PMT at the highest level. Two lamps are provided each of which is powered to flash at two different levels that are staged in energy from the lowest of four to the highest of four levels, and a shutter is provided to close off the PMT from exposure when an acceptable, detectable level of fluorescence is detected by the PMT.

Abstract translation: 一种用于在几个不同的水平闪烁目标的方法和荧光计，用于通过PMT检测荧光，而不会使最高水平的PMT发生眩晕。 提供两个灯，每个灯被供电以两个不同的电平闪光，这两个电平从四个电平中的最低到四个电平的能量分级，并且当可接受的可检测电平提供快门以关闭PMT以防曝光 的荧光被PMT检测到。

公开(公告)号：US5717210A

公开(公告)日：1998-02-10

申请号：US646327

申请日：1996-06-04

Applicant: Per Bexelius ,  Andreas Todor

Inventor： Per Bexelius ,  Andreas Todor

IPC: G01N21/31 ,  G01N21/53 ,  G01N21/85 ,  G01N21/01 ,  G01N21/49

CPC classification number: G01N21/8507 ,  G01N21/53 ,  G01N21/314 ,  G01N21/532 ,  G01N2201/0621 ,  G01N2201/0696 ,  G01N2201/08

Abstract: A device for measuring the mass of solids contained in a fluid with light. The device includes at least two pairs of light transmitters arranged crosswise. The light transmitters in each pair are able to, at the same time, transmit pulses of light with a certain wavelength, where the wavelengths of the pairs of transmitters are different from each other. The device further includes at least one detector that is able to detect light pulses reflected from the solids as a result of the transmitted light pulses. The detected light pulses are processed to obtain a measurement of the mass of the solids contained in the fluid.

Abstract translation: PCT No.PCT / SE94 / 01073 Sec。 371日期1996年6月4日 102（e）日期1996年6月4日PCT 1994年11月15日PCT PCT。 WO95 / 15488 PCT公开号 日期1995年6月8日用于测量包含在具有光的流体中的固体质量的装置。 该装置包括至少两对交叉布置的光发射器。 每对中的光发射器能够同时传输具有一定波长的光的脉冲，其中发射器对的波长彼此不同。 该装置还包括至少一个检测器，其能够检测作为透射光脉冲的结果从固体反射的光脉冲。 对检测到的光脉冲进行处理，以获得流体中所含固体质量的测量值。

公开(公告)号：US5608219A

公开(公告)日：1997-03-04

申请号：US464723

申请日：1995-06-27

Applicant: Cecile Aucremanne

Inventor： Cecile Aucremanne

IPC: G01N21/35 ,  G01N21/85 ,  G01N21/61

CPC classification number: G01N21/3504 ,  G01N2021/8585 ,  G01N2201/06186 ,  G01N2201/0696

Abstract: A device for detecting at least one gas with an absorption band in the infrared range. The device includes a cell containing a gas mixture to be tested, an infrared radiation source, a power supply circuit for the source, an infrared radiation sensor and a signal processing line connected to the output of the sensor. The cell is compact and the radiation source and the radiation sensor are held in direct contact with the gas mixture therein.

Abstract translation: 一种用于在红外范围内用吸收带检测至少一种气体的装置。 该装置包括含有要测试的气体混合物的单元，红外辐射源，用于源的电源电路，红外辐射传感器和连接到传感器的输出的信号处理线。 电池是紧凑的，并且辐射源和辐射传感器保持与其中的气体混合物直接接触。

公开(公告)号：US5564417A

公开(公告)日：1996-10-15

申请号：US31945

申请日：1993-03-16

Applicant: Britton Chance

Inventor： Britton Chance

IPC: A61B5/145 ,  A61B5/00 ,  A61B5/1455 ,  A61B5/1495 ,  A61B10/00 ,  G01N21/27 ,  G01N21/31 ,  G01N21/47 ,  G01N21/49 ,  G01N21/64 ,  A61N5/02

CPC classification number: A61B5/14551 ,  A61B5/14552 ,  A61B5/14553 ,  A61B5/1459 ,  A61B5/6828 ,  G01N21/3151 ,  G01N21/4795 ,  G01N21/49 ,  A61B2562/0233 ,  A61B2562/0242 ,  A61B2562/043 ,  G01N2021/1789 ,  G01N2021/3181 ,  G01N21/47 ,  G01N2201/0696

Abstract: A pathlength corrected spectrophotometer for tissue examination includes an oscillator for generating a carrier waveform of a selected frequency, an LED light source for generating light of a selected wavelength that is intensity modulated at the selected frequency introduced to a subject, and a photodiode detector for detecting light that has migrated in the tissue of the subject. The spectrophotometer also includes a phase detector for measuring a phase shift between the introduced and detected light, a magnitude detector for determination of light attenuation in the examined tissue, and a processor adapted to calculate the photon migration pathlength and determine a physiological property of the examined tissue based on the pathlength and on the attenuation data.

公开(公告)号：US5369397A

公开(公告)日：1994-11-29

申请号：US874394

申请日：1992-04-27

Applicant: Jacob Y. Wong

Inventor： Jacob Y. Wong

IPC: G01J1/16 ,  G01J1/18 ,  G01N21/25 ,  G01N21/31 ,  G01N21/35 ,  G08B17/117 ,  G08B29/20 ,  G08B17/10

CPC classification number: G01N21/255 ,  G01N21/3504 ,  G08B17/117 ,  G08B29/20 ,  G01J2001/161 ,  G01J2001/182 ,  G01N21/314 ,  G01N2201/0228 ,  G01N2201/06186 ,  G01N2201/0696

Abstract: The fire detector includes a carbon dioxide sensor and a microcomputer. When the rate of increase of the concentration of carbon dioxide at the sensor exceeds a threshold, an alarm is produced. The threshold is set at one of three possible levels by the microcomputer in response to the state of the atmosphere at the sensor as determined by the microcomputer based on several variables that are derived from the sensed concentration of carbon dioxide. The derived variables include the average concentration of carbon dioxide, the average rate of change of carbon dioxide concentration, the monotonicity of the increase or decrease of the carbon dioxide concentration and the range of concentrations sensed in each cycle of operation. The threshold setting is determined every ten seconds. In this way, the setting of the rate threshold is responsive to variations in the carbon dioxide level at the sensor that are caused by entities other than a fire, such as the presence or absence of people in a closed room.

Abstract translation: 火灾探测器包括二氧化碳传感器和微型计算机。 当传感器中二氧化碳浓度增加的速度超过阈值时，会产生报警。 由微型计算机响应于由微型计算机确定的气氛状态，根据从感测到的二氧化碳浓度导出的几个变量，阈值被设置在三个可能的水平之一。 衍生变量包括二氧化碳的平均浓度，二氧化碳浓度的平均变化率，二氧化碳浓度的增加或减少的单调性以及在每个操作周期中感测到的浓度范围。 阈值设置每10秒钟确定一次。 以这种方式，速率阈值的设置响应于由火焰以外的实体引起的传感器处的二氧化碳水平的变化，例如在封闭房间中存在或不存在人。

公开(公告)号：US5353799A

公开(公告)日：1994-10-11

申请号：US900197

申请日：1992-06-17

Applicant: Britton Chance

Inventor： Britton Chance

IPC: A61B10/00 ,  A61B5/00 ,  G01N21/31 ,  G01N21/47 ,  G01N21/49 ,  G01N21/64

CPC classification number: G01N21/6456 ,  A61B5/0073 ,  A61B5/0091 ,  A61B5/1455 ,  A61B5/14553 ,  A61B5/4312 ,  G01N21/3151 ,  G01N21/4795 ,  G01N21/49 ,  G01N21/6486 ,  A61B2562/0233 ,  A61B2562/0242 ,  A61B2562/043 ,  A61B5/14551 ,  A61B5/7239 ,  G01N2021/1789 ,  G01N2021/3181 ,  G01N2021/6421 ,  G01N2021/6484 ,  G01N21/47 ,  G01N2201/0696

Abstract: A method and system for examination of a subject positioned between input and detection ports of the spectroscopic system applied to the subject. The systems shown include at least one light source for introducing at one or multiple input ports, electromagnetic non-ionizing radiation of a known time-varying pattern of photon density of a wavelength selected to be scattered and absorbed while migrating in the subject, radiation pattern control means for achieving a directional pattern of emitted resulting radiation that possesses substantial gradient of photon density, at least one detector for detecting the radiation that has migrated in the subject at one or multiple detection ports. The systems also include processing means for processing the detected radiation and creating sets of data, and evaluation means for examining the subject using the data sets. The emitted directional radiation pattern utilizes its gradient of photon density to detect a hidden object while scanning across the examined subject. The wavelength of the radiation can be selected to be sensitive to endogenous or exogenous pigments, or to cause fluorescent emission from a fluorescent constituent of interest in the subject. The operation of the systems is computer controlled.

Abstract translation: 一种用于检查位于应用于被摄体的光谱系统的输入和检测端口之间的被摄体的方法和系统。 所示的系统包括用于在一个或多个输入端口处引入的至少一个光源，其被选择为被散射和吸收的波长的光子密度的已知​​时变模式的电磁非电离辐射，同时在受试者中迁移，辐射图 控制装置，用于实现具有基本梯度的光子密度的所发射的所得辐射的方向图，至少一个检测器，用于检测在一个或多个检测端口处在被检体中迁移的辐射。 该系统还包括用于处理检测到的辐射和创建数据集的处理装置，以及用于使用数据集检查对象的评估装置。 发射的方向辐射图使用其光子密度梯度来检测被扫描物体，同时扫描被检查的对象。 辐射的波长可以选择为对内源性或外源色素敏感，或者从受试者感兴趣的荧光成分引起荧光发射。 系统的操作是计算机控制的。

公开(公告)号：US5163332A

公开(公告)日：1992-11-17

申请号：US793990

申请日：1991-11-18

Applicant: Jacob Y. Wong

Inventor： Jacob Y. Wong

IPC: G01N21/35 ,  G01J1/16 ,  G01J1/18 ,  G01N1/00 ,  G01N1/22 ,  G01N21/03 ,  G01N21/05 ,  G01N21/25 ,  G01N21/31 ,  G01N21/61 ,  G08B17/10 ,  G08B17/117 ,  G08B29/20

CPC classification number: G01N21/0303 ,  G01N1/2258 ,  G01N21/05 ,  G01N21/255 ,  G01N21/3504 ,  G08B17/117 ,  G08B29/20 ,  G01J2001/161 ,  G01J2001/182 ,  G01N2001/2261 ,  G01N2021/0321 ,  G01N2021/0385 ,  G01N2021/052 ,  G01N21/0332 ,  G01N21/314 ,  G01N2201/0228 ,  G01N2201/06186 ,  G01N2201/0696

Abstract: A diffusion-type gas sample chamber for use in a gas analyzer consists of an elongated hollow tube having an inwardly-facing specularly-reflective surface that permits the tube to function also as a light pipe for transmitting radiation from a source to a detector through the sample gas. A number of filtering apertures in the wall of the otherwise non-porous hollow tube permit the sample gas to enter and exit freely under ambient pressure. Particles of smoke and dust of a size greater than 0.1 micron are kept out of the chamber by use of a semi-permeable membrane that spans the apertures in the hollow tube. Condensation of the sample gas components is prevented by heating the sample chamber electrically to a temperature above the dew point of the component of concern.

Abstract translation: 用于气体分析仪的扩散型气体样本室由具有朝内的镜面反射表面的细长的中空管组成，该中空管允许管也用作用于将辐射从源传输到检测器的光管 样气 否则无孔中空管的壁中的多个过滤孔允许样品气体在环境压力下自由进出。 通过使用跨越中空管中的孔的半透膜将尺寸大于0.1微米的烟尘颗粒保持在室外。 通过将样品室电加热到高于所关注部件的露点的温度来防止样品气体组分的冷凝。

公开(公告)号：US5129726A

公开(公告)日：1992-07-14

申请号：US488002

申请日：1990-05-09

Applicant: Bjarne C. Nielsen

Inventor： Bjarne C. Nielsen

IPC: B07C5/342 ,  G01J1/42 ,  G01J3/10 ,  G01J3/50 ,  G01J3/51 ,  G01N21/27 ,  G01N21/84

CPC classification number: G01J3/50 ,  B07C5/342 ,  G01J3/02 ,  G01J3/0224 ,  G01J2001/4242 ,  G01J3/10 ,  G01J3/513 ,  G01N2021/845 ,  G01N2201/0696

Abstract: An apparatus for color control of objects (11) has an approximately point-shaped light source in the form of a xenon flash lamp (16), which illuminates a specific, desired area through a diaphragm (17). Light reflected from the object is received by a detector unit (13) having three or more sensors (22) with their respective spectral sensitivities, which are positioned at such a great distance from the object that each receives substantially the same amount of light from all parts of the illuminated area. The detector signals are amplified by amplifiers adapted to filter all signals exhibiting another timewise variation than the light source, so that disturbing influence from the surroundings is avoided. The apparatus is simple and fast and is versatile in use.

Abstract translation: PCT No.PCT / DK88 / 00185 Sec。 371日期1990年5月9日 102（e）日期1990年5月9日PCT提交1988年11月9日PCT公布。 出版物WO89 / 04468 日期：1989年5月18日。用于物体（11）的颜色控制的设备具有氙闪光灯（16）形式的大致点状的光源，其通过隔膜（17）照射特定的所需区域。 从物体反射的光由具有三个或更多个传感器（22）的检测器单元（13）接收，具有它们各自的光谱灵敏度，这些传感器位于与物体相距很远的距离处，每个接收器从所有物体接收基本相同量的光 部分照明区域。 检测器信号被放大器放大，适用于滤除所有出现光源的时间变化的信号，从而避免了周围环境的不利影响。 该设备简单快捷，使用方便。

公开(公告)号：US5014216A

公开(公告)日：1991-05-07

申请号：US221476

申请日：1988-07-19

Applicant: Roger A. Stafford ,  Roy W. Aday, Jr. ,  Robert L. Schmidt ,  Myron L. McCollum

Inventor： Roger A. Stafford ,  Roy W. Aday, Jr. ,  Robert L. Schmidt ,  Myron L. McCollum

IPC: G01J3/42 ,  G01J1/44 ,  G01N21/25 ,  G01N21/27 ,  G01N21/31

CPC classification number: G01N21/314 ,  G01J3/02 ,  G01J3/027 ,  G01J3/28 ,  G01J3/42 ,  G01N21/255 ,  G01J2003/421 ,  G01N2021/3137 ,  G01N2021/3148 ,  G01N2201/0696

Abstract: A monobeam system for determining concentration changes of chromophore substance in a sample includes a flash lamp for passing a light beam through a sample containing the analyte. The values of absorbance by the sample at multiple wavelengths are measured and the optimum linear combination of absorbance values is determined to obtain a measure of chromophore concentration. Extinction coefficients for a chromophore is measured employing Deming's method and eigenvector transformations. A matrix reflecting the noise pattern of the system is determined. This matrix and the extinction coefficients are used in determining the coefficients for the optimum linear combination. An electronic module converts analog intensity data into digital data for five wavelengths. This is processed into absorbance values and concentration determinations.

公开(公告)号：US4968632A

公开(公告)日：1990-11-06

申请号：US409964

申请日：1989-09-18

Applicant: Stefan Brauer ,  Jan Johansson ,  Jan-Ove Nilsson ,  Sven G. Olsson

Inventor： Stefan Brauer ,  Jan Johansson ,  Jan-Ove Nilsson ,  Sven G. Olsson

IPC: A61B5/083 ,  G01N21/05 ,  G01N21/64 ,  G01N21/76 ,  G01N21/77

CPC classification number: G01N21/6428 ,  A61B5/0833 ,  G01N21/64 ,  G01N2021/6421 ,  G01N2021/6432 ,  G01N2021/7786 ,  G01N2201/0627 ,  G01N2201/0696 ,  Y10T436/207497

Abstract: A method and apparatus for rapid analysis of a sample medium, particularly a flowing sample medium employ light of a defined wavelength which is guided onto a luminescent layer in contact with the sample medium, the luminescent properties of the layer varying in dependence upon characteristics of the sample medium which are to be analyzed. The luminescent light is monitored by detectors, the detector signals being a measure for the characteristic of interest. For undertaking identification of a particular characteristic with very short follow-up time, even in the presence of a number of other characteristics which influence the luminescent properties, the luminescent intensity is identified for a number of different wavelength regions corresponding in number to the number of characteristics, each characteristic differently influencing the luminescent properties in at least one wavelength region. The signals thus obtained are supplied to a processing device for identifying the value of the characteristic of interest.

Abstract translation: 用于快速分析样品介质，特别是流动样品介质的方法和装置使用被引导到与样品介质接触的发光层上的限定波长的光，该层的发光特性根据 待分析的样品介质。 发光灯由检测器监测，检测器信号是感兴趣特征的度量。 为了进行非常短的跟踪时间的特定特征的识别，即使存在影响发光特性的许多其它特性，发光强度也被识别为与数量相对应的多个不同波长区域 特征，每个特征不同地影响至少一个波长区域中的发光性质。 这样获得的信号被提供给用于识别感兴趣特征值的处理装置。