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公开(公告)号：US09395247B2
公开(公告)日：2016-07-19
申请号：US14767828
申请日：2014-02-13
发明人： Juha Kostamovaara , Jussi Tenhunen
CPC分类号： G01J3/4412 , G01J3/2803 , G01J3/44 , G01J3/4406 , G01N21/65
摘要： An apparatus comprises a semiconductor single-photon avalanche detector, and a counter. The detector performs detections of photons of optical radiation caused by an optical excitation pulse to the object. The counter measures timing of each detection made in the detector with respect to the excitation pulse causing the detected photons, and performs at least one of the following: forming a number of Raman detections, forming a number of fluorescence detections. Forming the number of the Raman detections is performed by eliminating an estimate of a number of fluorescence photons in the measurement. Forming the number of the fluorescence detections is performed by eliminating an estimate of a number of Raman photons in the measurement. The estimates are formed in a predetermined manner from the number and timing of the detections.
摘要翻译： 一种装置包括半导体单光子雪崩检测器和计数器。 检测器执行由对该物体的光激发脉冲引起的光辐射的光子的检测。 该计数器测量检测器中相对于引起检测到的光子的激发脉冲进行的每次检测的定时，并执行以下至少之一：形成多个拉曼检测，形成多个荧光检测。 通过消除测量中的荧光光子数量的估计来进行形成拉曼检测的数量。 通过消除测量中的拉曼光子数量的估计来进行荧光检测的数量。 从检测的次数和定时以预定的方式形成估计。
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公开(公告)号：US09772228B2
公开(公告)日：2017-09-26
申请号：US15030697
申请日：2014-10-21
发明人： Jarkko Antila , Jussi Tenhunen
摘要： A device and a method for optical measurement of a target, wherein the target is irradiated with radiation beam (15) and a measurement beam (27) is received from the target and detected. Commonly used absorbance, reflectance and fluorescence measurements do not provide adequate information in e.g. measuring small contents of sulphur compounds. The present solution provides a new Raman spectrometer which is suitable for mass applications. A target is activated with pulses of a laser diode (12). The Raman signatures are measured and integrated successively with a point detector (44). A Fabry-Perot interferometer (42) on the measurement path is successively controlled into corresponding pass bands. While high spectral resolution or range is not required it is possible to use small-sized and low cost components.
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