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    ENHANCED SURFACE PLASMON RESONANCE METHOD
    7.
    发明申请
    ENHANCED SURFACE PLASMON RESONANCE METHOD 审中-公开

    公开(公告)号：US20170219571A1

    公开(公告)日：2017-08-03

    申请号：US15486039

    申请日：2017-04-12

    Applicant: Biosurfit S.A.

    Inventor： João Manuel Oliveira Garcia Da Fonseca

    IPC: G01N33/543 ,  G01N21/552 ,  G01N33/553 ,  G01N21/41

    CPC classification number: G01N33/54373 ,  G01N21/41 ,  G01N21/553 ,  G01N33/54346 ,  G01N33/553 ,  G01N2201/0612 ,  G01N2201/06146 ,  G01N2201/0621 ,  G01N2201/0635 ,  G01N2201/12723

    Abstract: The disclosure relates to processing SPR signals, in particular signals obtained by illuminating a conductive surface with light at two wavelengths. Embodiments—involve processing a first and second signal indicative of an intensity of light, received from a conductive layer at which SPR has occurred, as a function of angle of incidence, reflection or diffraction at the layer (depending on whether the incident light beam is received by a detector recording it in reflection or transmission from the conductive layer). The first and second signals each have two dips corresponding to a respective wavelength of the light at a respective angle at which surface plasmon resonance occurs for the respective wavelength and a peak between the two dips. The processing includes deriving a first and second value of a quantity indicative of signal magnitudes in the region of the peak. The method then provides for comparing the first and second values to detect a change in refractive index at the layer after the first signal and before the second signal was captured.

    METHOD AND DEVICE FOR DETERMINING THE SIZE OF A TRANSPARENT PARTICLE
    9.
    发明申请
    METHOD AND DEVICE FOR DETERMINING THE SIZE OF A TRANSPARENT PARTICLE 审中-公开
    用于确定透明颗粒尺寸的方法和装置

    公开(公告)号：US20170045434A1

    公开(公告)日：2017-02-16

    申请号：US15212300

    申请日：2016-07-18

    Applicant: TECHNISCHE UNIVERSITAET DARMSTADT

    Inventor： Cameron TROPEA ,  Walter SCHAEFER

    IPC: G01N15/02

    CPC classification number: G01N15/0211 ,  G01N15/0205 ,  G01N15/1434 ,  G01N21/4133 ,  G01N2015/0222 ,  G01N2015/0238 ,  G01N2015/1493 ,  G01N2201/0621

    Abstract: A method is described for determining the size of a transparent particle (2), wherein the particle (2) is illuminated with light from a light source (6), wherein using a radiation detector (7) a time-resolved intensity curve of light from the light source (6) scattered on the particle (2) is measured at a preselectable scattering angle θs, wherein characteristic scattered light peaks are determined in the intensity curve, and wherein the size of the particle (2) is determined on the basis of the time difference between two scattered light peaks, characterized in that, with the help of two radiation detectors (7) or light sources (6), a first and a second time-resolved intensity curve of scattered light, scattered on the particle (2) in the forward direction, are measured; a transmission peak (12) and a reflection peak (11) are determined from the first intensity curve and from the second intensity curve; a first time difference between the transmission peaks (12) is determined, and a second time difference between the reflection peaks (11) is determined; a characteristic variable α is determined from the ratio of the first time difference and the second time difference; and a size determination is performed for the particles (2) for which the characteristic variable α corresponds to a preselectable value. (FIG. 3)

    Abstract translation: 描述了一种用于确定透明颗粒（2）的尺寸的方法，其中用来自光源（6）的光照射颗粒（2），其中使用辐射检测器（7）将光的时间分辨强度曲线 以预选散射角度θs测量从散射在粒子（2）上的光源（6），其中在强度曲线中确定特征散射光峰，其中基于（2）的粒子尺寸确定 两个散射光峰之间的时间差的特征在于，借助于两个辐射检测器（7）或光源（6），分散在颗粒上的散射光的第一和第二时间分辨强度曲线（ 2）正向测量; 从第一强度曲线和第二强度曲线确定透射峰（12）和反射峰（11） 确定透射峰（12）之间的第一时间差，并且确定反射峰（11）之间的第二时间差; 根据第一时间差和第二时间差的比率确定特征变量α; 并且对于特征变量α对应于预选值的粒子（2）进行尺寸确定。 （图3）

    Scattered-light smoke detector with a two-color light-emitting diode
    10.
    发明授权
    Scattered-light smoke detector with a two-color light-emitting diode 有权
    散射式烟雾探测器，带有双色发光二极管

    公开(公告)号：US09541501B2

    公开(公告)日：2017-01-10

    申请号：US14955101

    申请日：2015-12-01

    Applicant: Siemens Schweiz AG

    Inventor： Martin Allemann ,  Brigitt Schmid ,  Stefan Walker

    IPC: G01N21/00 ,  G01N21/53 ,  G08B17/107 ,  G08B17/113

    CPC classification number: G01N21/53 ,  G01N2201/0621 ,  G01N2201/0696 ,  G08B17/107 ,  G08B17/113

    Abstract: A scattered-light smoke detector includes a detector unit that operates according to the scattered-light principle. The detector unit includes a light-emitting diode (LED) to irradiate particles to be detected and a spectrally sensitive photosensor to detect the light scattered by the particles. The LED and photosensor are aligned such that a principal optical axis of the LED and a principal optical axis of the photosensor define a scattered-light angle. The LED includes a first and a second LED chip for emitting first and second light beams with light in a first wavelength range and a different second wavelength range, and an LED chip carrier arranged orthogonally to the principal optical axis. The two LED chips are arranged side-by-side on the LED chip carrier. The LED is rotated such that a chip axis extending through the two LED chips is orthogonal to an angle plane defined by the two optical axes.

    Abstract translation: 散射烟雾探测器包括根据散射光原理操作的检测器单元。 检测器单元包括用于照射要检测的颗粒的发光二极管（LED）和用于检测由颗粒散射的光的光谱敏感光电传感器。 LED和光电传感器对准，使得LED的主光轴和光电传感器的主光轴定义散射光角度。 LED包括第一和第二LED芯片，用于发射具有第一波长范围和不同第二波长范围的光的第一和第二光束以及与主光轴垂直布置的LED芯片载体。 两个LED芯片并排布置在LED芯片载体上。 LED被旋转使得延伸穿过两个LED芯片的芯片轴线正交于由两个光轴限定的角度平面。

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