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    • 4. 发明申请
    • FLUOROMETER DETECTION SYSTEM
    • 荧光检测系统
    • WO1993019358A1
    • 1993-09-30
    • PCT/US1993002540
    • 1993-03-22
    • DIATRON CORPORATION
    • DIATRON CORPORATIONSTUDHOLME, Robert, MarlinBLAU, David, Arthur
    • G01N21/64
    • G01N21/6408G01N21/6456G01N2021/6463
    • An improved fluorescence detection system is provided which utilizes a relatively high powered, relatively high repetition rate light source (10) with high speed detection electronics to increase system sensitivity and accuracy. In the preferred embodiments, a laser diode (90) is the light source (10). In one embodiment, the position of a time window is varied to compile a decay profile of a fluorophore. In another embodiment, the time of detection of a photon is used to compile the decay profile. In one aspect of this invention, a histogram of the fluorescence decay is generated by determining a preliminary histogram of the shape and multiplying it by the ratio of the total number of events divided by the number of events comprising the preliminary histogram. In another aspect of this invention, the time of detection after excitation of the photon is started from a random time, such as after a preceding event is detected and the data stored.
    • 提供了一种改进的荧光检测系统,其利用具有高速检测电子装置的相对高功率,相对高的重复率光源(10)来提高系统灵敏度和精度。 在优选实施例中,激光二极管(90)是光源(10)。 在一个实施例中,改变时间窗的位置以编制荧光团的衰减曲线。 在另一个实施例中,使用光子的检测时间来编译衰减曲线。 在本发明的一个方面,通过确定形状的初步直方图并将其乘以总事件数除以包括初步直方图的事件数的比率来生成荧光衰减的直方图。 在本发明的另一方面,光子激发后的检测时间是从随机时间开始的,例如在检测到先前事件并存储数据之后。
    • 9. 发明授权
    • Fluorometer
    • 荧光计
    • US4877965A
    • 1989-10-31
    • US751746
    • 1985-07-01
    • Walter B. DandlikerHoward S. BarrHenry S. KatzensteinKeith R. Watson
    • Walter B. DandlikerHoward S. BarrHenry S. KatzensteinKeith R. Watson
    • G01N21/64G02B21/16
    • G01N21/6408G02B21/16G01N21/6456G01N21/6458G01N2201/1087
    • A fluorometer for measuring a particular fluorescence emanating from a specimen and operating in accordance with the following method. Producing a burst of concentrated light energy and directing the concentrated light energy toward the specimen to produce a fluorescence from the specimen including the particular fluorescence. Preferably producing an image of the fluorescence. Detecting the fluorescence and producing a signal in accordance with the fluorescence. Controlling the passage of the image of the fluorescence for detecting within a particular time period so as to optimize the detection of the particular fluorescence. Timing the operation to sequence the detection of the fluorescence within the particular time period after the production of the burst of concentrated light energy. Scanning the fluorescence from the specimen for forming signals representative of the fluorescence from the specimen. Analyzing the signals to enhance the portion of the signal representing the particular fluorescence relative to the portion of the signal.
    • 一种荧光计,用于测量从样品发出的特定荧光并根据以下方法进行操作。 产生集中的光能的突发,并将集中的光能引导到样品以从包括特定荧光的样品产生荧光。 优选地产生荧光图像。 根据荧光检测荧光并产生信号。 控制在特定时间段内用于检测的荧光图像的通过,以便优化特定荧光的检测。 计算在产生聚集的光能的突发之后的特定时间段内对荧光的检测进行排序的操作。 扫描来自样品的荧光,以形成代表来自样品荧光的信号。 分析信号以增强表示相对于信号部分的特定荧光的信号部分。