公开(公告)号：US09612153B2

公开(公告)日：2017-04-04

申请号：US14950617

申请日：2015-11-24

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yoichi Kawada ,  Takashi Yasuda ,  Hironori Takahashi

IPC: G01J5/02 ,  G01J1/44 ,  G01J4/04 ,  G01J1/42 ,  G01J1/04 ,  G01J3/433 ,  G01J3/42 ,  G01J3/02 ,  G01R15/24 ,  G01R29/08 ,  G01N21/3581

CPC classification number: G01J1/44 ,  G01J1/0429 ,  G01J1/4228 ,  G01J3/0224 ,  G01J3/0262 ,  G01J3/42 ,  G01J3/433 ,  G01J3/4338 ,  G01J4/04 ,  G01J2001/4242 ,  G01N21/3581 ,  G01R15/241 ,  G01R29/0871

Abstract: In this electric field vector detection method, an electro-optic crystal, where a (111) surface of an optical isotropic medium is cut out, is used as a terahertz wave detection element. The method includes: causing polarization of probe light of ultrashort pulsed light to be circular polarization; allowing the probe light having circular polarization to enter the terahertz wave detection element and probing the terahertz wave; modulating the probe light, having probed the terahertz wave, by a rotating analyzer and detecting the modulated probe light by a photodetector; performing lock-in detection of a detection signal from the photodetector by a lock-in detector using a frequency based on a rotational frequency of the rotating analyzer as a reference signal; and detecting an electric field vector of the terahertz wave based on a detection signal from the lock-in detector.

公开(公告)号：US20170059403A1

公开(公告)日：2017-03-02

申请号：US15251952

申请日：2016-08-30

Applicant: Thermo Fisher Scientific (Bremen) GmbH

Inventor： Ulf FROEHLICH ,  Eric WAPELHORST

IPC: G01J3/02 ,  H01S5/0683 ,  G01J1/42 ,  H01S5/068 ,  G01J3/42 ,  G01J3/26

CPC classification number: G01J3/027 ,  G01J1/4257 ,  G01J3/26 ,  G01J3/42 ,  G01J3/433 ,  G01J2003/4334 ,  G01N21/00 ,  G01N21/39 ,  G01N2021/399 ,  H01S5/005 ,  H01S5/0092 ,  H01S5/0612 ,  H01S5/0617 ,  H01S5/0622 ,  H01S5/06804 ,  H01S5/06808 ,  H01S5/0683 ,  H01S5/12 ,  H01S5/4087

Abstract: An operating value of a first laser parameter of a laser device in a laser absorption spectrometer is optimized. The wavelength of laser device emitted light is adjusted by the first or a second laser parameter. The laser absorption spectrometer comprises a light intensity detector measuring the laser light intensity from the laser device. For each of multiple values of the first laser parameter: the light intensity detector measures light intensity obtained across a range of second laser parameter values, and an extremum in the light intensity measure and a peak position for the extremum are identified. A range of first laser parameter values is identified within the values of the first laser parameter for which there is a continuous trend in changes to the identified peak position with changes to the first laser parameter. The first laser parameter operating value is set to be within the identified range.

Abstract translation: 激光吸收光谱仪中的激光装置的第一激光参数的操作值被优化。 通过第一或第二激光参数调节激光器发射光的波长。 激光吸收光谱仪包括测量来自激光装置的激光强度的光强度检测器。 对于第一激光参数的多个值中的每一个：光强度检测器测量在第二激光参数值的范围内获得的光强度，并且识别光强测量中的极值和极值的峰值位置。 在第一激光参数的值内识别出一系列第一激光参数值，在第一激光参数的值中，随着对第一激光参数的改变，对所识别的峰位置的变化存在连续趋势。 第一激光参数工作值设定在识别范围内。

公开(公告)号：US20160377530A1

公开(公告)日：2016-12-29

申请号：US15192904

申请日：2016-06-24

Applicant: Fresenius Medical Care Holdings, Inc.

Inventor： Louis L. Barrett

IPC: G01N21/27 ,  G01N33/49 ,  H04B10/66

CPC classification number: G01N33/49 ,  A61B5/0059 ,  A61B5/0084 ,  A61B5/0261 ,  A61B5/14542 ,  A61B5/14551 ,  A61M1/14 ,  A61M1/3627 ,  A61M2205/3313 ,  A61M2230/20 ,  A61M2230/202 ,  A61M2230/205 ,  A61M2230/207 ,  G01J3/433 ,  G01N21/31 ,  G01N2021/3181 ,  G01N2201/0627 ,  G01N2201/0691 ,  G01N2201/12

Abstract: An embodiment of the disclosure provides a system for determining information on one or more constituents in a medium. The system includes N light emitters L1 . . . LN, wherein each light emitter Lr provides an amplitude modulated (AM) light at modulation frequency fr into a flow path of the medium from one side of a containment vessel for the medium. The system further includes a photodetector, for receiving the AM light from each light emitter after it passes through the flow path of the medium, and converting the AM light to an electrical signal characterized by a summation of frequency components from each modulation frequency fr. The system further includes one or more measuring circuits providing information about a concentration of one or more constituents in the medium determined from log ratios of a pair of amplitudes of fy and fz frequency components in the electrical signal.

Abstract translation: 本公开的实施例提供了一种用于确定介质中的一个或多个成分的信息的系统。 该系统包括N个发光体L1。 。 。 LN，其中每个光发射器Lr以调制频率fr的调幅（AM）光提供到介质从用于介质的容纳容器的一侧的流动路径。 该系统还包括光电检测器，用于在通过介质的流路之后接收来自每个光发射器的AM光，并将AM光转换成以每个调制频率fr的频率分量的总和为特征的电信号。 该系统还包括一个或多个测量电路，其提供关于介质中的一个或多个成分的浓度的信息，其由电信号中的一对fy和fz频率分量的对数比的对数比确定。

公开(公告)号：US09523636B2

公开(公告)日：2016-12-20

申请号：US14441484

申请日：2012-12-28

Applicant: Halliburton Energy Services, Inc.

Inventor： Michael Pelletier ,  William Soltmann ,  David L. Perkins ,  Christopher M. Jones

IPC: G01N21/31 ,  G01V8/10 ,  H03K7/08 ,  G01N21/47 ,  G01N21/25 ,  G01J3/433 ,  G01J3/10 ,  G01J5/52 ,  H05B37/02 ,  E21B49/08 ,  G01J3/02 ,  G01J3/427 ,  E21B47/10

CPC classification number: G01N21/255 ,  E21B47/102 ,  E21B49/08 ,  G01J3/0205 ,  G01J3/027 ,  G01J3/10 ,  G01J3/108 ,  G01J3/427 ,  G01J3/433 ,  G01J5/522 ,  G01N21/31 ,  G01N21/47 ,  G01N2201/061 ,  G01N2201/06186 ,  G01N2201/0696 ,  G01N2201/12 ,  G01V8/10 ,  H03K7/08 ,  H05B37/0209

Abstract: A light source and a method for its use in an optical sensor are provided, the light source including a resistively heated element. The light source includes a power circuit configured to provide a pulse width modulated voltage to the resistively heated element, the pulse width modulated voltage including: a duty cycle with a first voltage; and a pulse period including a period with a second voltage, wherein: the duty cycle, the first voltage, and the pulse period are selected so that the resistively heated element is heated to a first temperature; and the first temperature is selected to emit black body radiation in a continuum spectral range. Also provided is an optical sensor for determining a chemical composition including a light source as above.

公开(公告)号：US20160334331A1

公开(公告)日：2016-11-17

申请号：US15111824

申请日：2015-01-14

Applicant: OY SPARKLIKE AB

Inventor： Kai Niiranen ,  Miikkael Niemi ,  Mikko Syrjälahti

IPC: G01N21/39 ,  G01J3/433

CPC classification number: G01N21/39 ,  G01J3/433 ,  G01J3/4338 ,  G01N21/274 ,  G01N2021/399

Abstract: A device for non-invasively determining existence of a gas component of interest inside a determination space of a glass unit comprises a laser beam emitting unit comprising a laser source for emitting laser beam towards said measuring space and detecting unit comprising a detector for detecting transmission of said emitted laser beams travelled through said space. The device is configured to measure in a calibration mode locations of at least one reference peak of at least same gas component as to the determined inside the determination space. The emitted laser beam is configured to travel through a calibration space having at least the gas component of interest, and the detecting means is configured essentially to detect or image said beam transmitted through said calibration space. The device is also configured to be moved so to receive said determination space between the laser beam emitting unit and detecting unit for a determining purpose of the existence of the interest gas component inside said determination space.

Abstract translation: 用于非侵入性地确定玻璃单元的确定空间内的感兴趣的气体成分的存在的装置包括：激光束发射单元，包括用于朝向所述测量空间发射激光束的激光源;以及检测单元，所述检测单元包括检测器， 所述发射的激光束穿过所述空间。 该装置被配置为在校准模式中测量与确定空间内确定的至少相同气体成分的至少一个参考峰的位置。 发射的激光束被配置成行进通过至少具有感兴趣的气体分量的校准空间，并且检测装置基本上被配置为检测或成像透过所述校准空间的所述光束。 该装置还被配置为移动以便在激光束发射单元和检测单元之间接收所述确定空间，以确定在所述确定空间内存在感兴趣气体成分的确定目的。

公开(公告)号：US09429473B2

公开(公告)日：2016-08-30

申请号：US14515852

申请日：2014-10-16

Applicant: Joseph R. Demers

Inventor： Bryon L. Kasper ,  Joseph R. Demers

IPC: G01J5/02 ,  G01J3/433 ,  G01J3/10

CPC classification number: G01J3/4338 ,  G01J3/108 ,  G01J3/42 ,  G01J3/433

Abstract: Highly advantageous spectrometer systems and associated methods are disclosed which utilize phase modulation in conjunction with first and second harmonic detection to reduce or eliminate negative impacts from interference patterns.

Abstract translation: 公开了高效益的光谱仪系统和相关方法，其利用与第一和第二谐波检测结合的相位调制来减少或消除干扰图案的负面影响。

公开(公告)号：US20160169748A1

公开(公告)日：2016-06-16

申请号：US14968289

申请日：2015-12-14

Applicant: BEIHANG UNIVERSITY

Inventor： Zheng Zheng ,  Xin Zhao ,  Lei Liu ,  Jiansheng Liu

IPC: G01J11/00 ,  G01J3/02 ,  G01J3/10

CPC classification number: G01J11/00 ,  G01J1/10 ,  G01J3/0224 ,  G01J3/0245 ,  G01J3/10 ,  G01J3/108 ,  G01J3/42 ,  G01J3/433 ,  G01J3/447 ,  G02F1/353 ,  G02F1/365 ,  G02F1/37 ,  G02F2203/13 ,  H01S3/0092 ,  H01S3/06791 ,  H01S3/0809 ,  H01S3/1106 ,  H01S3/1112 ,  H01S3/2391

Abstract: A method and a system for measuring an optical asynchronous sample signal. The system for measuring an optical asynchronous sampling signal comprises a pulsed optical source capable of emitting two optical pulse sequences with different repetition frequencies, a signal optical path, a reference optical path, and a detection device. Since the optical asynchronous sampling signal can be measured by merely using one pulsed optical source, the complexity and cost of the system are reduced. A multi-frequency optical comb system using the pulsed optical source and a method for implementing the multi-frequency optical comb are further disclosed.

Abstract translation: 一种用于测量光学异步采样信号的方法和系统。 用于测量光学异步采样信号的系统包括能够发射具有不同重复频率的两个光脉冲序列的脉冲光源，信号光路，参考光路和检测装置。 由于可以通过仅使用一个脉冲光源来测量光学异步采样信号，所以系统的复杂性和成本降低。 进一步公开了使用脉冲光源的多频光梳系统和实现多频光梳的方法。

公开(公告)号：US20160146667A1

公开(公告)日：2016-05-26

申请号：US14904440

申请日：2014-07-13

Applicant: B.G. NEGEV TECHNOLOGIES AND APPLICATIONS LTD. (BEN-GURION UNIVERSITY)

Inventor： Yitzhak AUGUST ,  Adrian STERN ,  Dan G. BLUMBERG ,  Stanley R. ROTMAN

IPC: G01J3/433 ,  G01J3/26

CPC classification number: G01J3/433 ,  G01J3/1256 ,  G01J3/26 ,  H03M7/3062

Abstract: A spectroscopic method using either tunable or preset non-tunable thin-layered devices or a combination of both to modulate compressed-sensing-compliant, spectral modulations and to use intensity measurements of each respective spectral modulation to numerically reconstruct an estimated spectral distribution of the spectral signal such that the estimated spectral distribution is characterized by a totality of spectral bands exceeding the number of spectral modulations by about one half an order-of-magnitude or more.

Abstract translation: 使用可调谐或预设的不可调薄层器件或两者的组合的光谱方法来调制压缩感测兼容性，光谱调制并且使用每个相应光谱调制的强度测量来数值地重建光谱的估计光谱分布 信号，使得估计的频谱分布的特征在于频谱带的总数超过频谱调制的数量大约一个数量级或更多的数量级。

公开(公告)号：US20160084760A1

公开(公告)日：2016-03-24

申请号：US14860712

申请日：2015-09-22

Applicant: Mohamad Haidar Shahine

Inventor： Mohamad Haidar Shahine

IPC: G01N21/59 ,  G01N33/00

CPC classification number: G01N33/004 ,  G01J3/433 ,  G01N21/3504 ,  G01N21/39 ,  G01N33/007 ,  G01N2021/1795 ,  G01N2201/12

Abstract: A system and method to accurately estimate the strength and changes of the monitoring signal for sensing applications, this invention involves the monitoring of signal strength and changes through the use of a pseudorandom binary sequence bit stream to modulate the transmitter of a data link, when beating the transmitter signal with absorption structure signal from the sensor at the receiver, the changes in the received signal strength are proportional to the sensing signal being monitored. The received signal bit pattern is monitored by an error detector scheme to report a Bit Error Rate level based on the changes in the sensing signal level as compared to the bit stream from the transmitter. This results in a very accurate robust monitoring technique with high consistency and repeatability.

Abstract translation: 一种准确地估计用于感测应用的监测信号的强度和变化的系统和方法，本发明涉及通过使用伪随机二进制序列比特流来监视信号强度和变化，以便在跳动时对数据链路的发射机进行调制 具有来自接收机处的传感器的吸收结构信号的发射机信号，接收信号强度的变化与被监测的感测信号成比例。 接收到的信号位模式由误差检测器方案监视，以便与来自发射机的比特流相比，基于感测信号电平的变化来报告误码率电平。 这导致具有高一致性和重复性的非常精确的鲁棒监控技术。

公开(公告)号：US20160047739A1

公开(公告)日：2016-02-18

申请号：US14823248

申请日：2015-08-11

Applicant: Siemens Aktiengesellschaft

Inventor： Ralf BITTER

IPC: G01N21/31 ,  G01N33/00

CPC classification number: G01N21/31 ,  G01J3/433 ,  G01N21/3504 ,  G01N21/39 ,  G01N33/0073 ,  G01N2201/061

Abstract: Absorption spectrometer and method for measuring the concentration of a gaseous component of interest in a measurement gas, wherein to compensate influence of changes in an optical path length in the absorption spectrometer on a measured result, light from the laser is modulated with at least one pilot frequency in the MHz range, the measurement signal is analyzed in a phase-sensitive manner for the pilot frequency, phase information obtained during this analysis is compared with phase information obtained during calibration of the absorption spectrometer, where the measured result is corrected as a function of the difference between the two items of phase information. Alternatively, light from the laser is modulated with two pilot frequencies, where signal components contained in the measurement signal with the pilot frequencies are detected in a phase-sensitive manner and the difference between the phase information of the two signal components obtained in this operation is analyzed.

Abstract translation: 吸收光谱仪和测量气体中感兴趣的气体组分的浓度的方法，其中为了补偿吸收光谱仪中的光程长度的变化对测量结果的影响，来自激光的光由至少一个导频 频率在MHz范围内，以导频的相敏方式分析测量信号，将在该分析期间获得的相位信息与在吸收光谱仪的校准期间获得的相位信息进行比较，其中测量结果被校正为函数 的两个相位信息之间的区别。 或者，来自激光器的光由两个导频调制，其中包含在具有导频的测量信号中的信号分量以相敏性方式被检测，并且在该操作中获得的两个信号分量的相位信息之间的差为 分析