公开(公告)号：US20240272066A1

公开(公告)日：2024-08-15

申请号：US18438513

申请日：2024-02-11

Applicant: Zhenhong Yu ,  James William Assif

Inventor： Zhenhong Yu ,  James William Assif

IPC: G01N21/17

CPC classification number: G01N21/1702 ,  G01N2201/067 ,  G01N2201/0691

Abstract: The present disclosure is directed to a photoacoustic excitation device comprising an amplitude modulator to control emitted light beam.

公开(公告)号：US20180259455A1

公开(公告)日：2018-09-13

申请号：US15487438

申请日：2017-04-14

Applicant: Massachusetts Institute of Technology

Inventor： Ayush Bhandari ,  Christopher Barsi ,  Achuta Kadambi ,  Ramesh Raskar

IPC: G01N21/64

CPC classification number: G01N21/6408 ,  G01N21/6456 ,  G01N2201/0691 ,  G01N2201/126 ,  G01N2201/129 ,  G07D7/00

Abstract: A light source may illuminate a scene with pulsed light that is pulsed non-periodically. The scene may include fluorescent material that fluoresces in response to the pulsed light. The pulsed light signal may comprise a maximum length sequence or Gold sequence. A lock-in time-of-flight sensor may take measurements of light returning from the scene. A computer may, for each pixel in the sensor, perform a Discrete Fourier Transform on measurements taken by the pixel, in order to calculate a vector of complex numbers for the pixel. Each complex number in the vector may encode phase and amplitude of incident light at the pixel and may correspond to measurements taken at a given time interval during the pulsed light signal. A computer may, based on phase of the complex numbers for a pixel, calculate fluorescence lifetime and scene depth of a scene point that corresponds to the pixel.

公开(公告)号：US20180120155A1

公开(公告)日：2018-05-03

申请号：US15796290

申请日：2017-10-27

Applicant: VERIFOOD, LTD.

Inventor： Sagee Rosen ,  Idan Bakish ,  Uri Kinrot

IPC: G01J3/02 ,  G01N21/01 ,  G01N21/25 ,  G01J3/28 ,  G01J3/36

CPC classification number: G01J3/0272 ,  G01J3/0202 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0216 ,  G01J3/0256 ,  G01J3/0264 ,  G01J3/0286 ,  G01J3/0291 ,  G01J3/2803 ,  G01J3/36 ,  G01J2003/104 ,  G01J2003/2806 ,  G01N21/01 ,  G01N21/255 ,  G01N21/33 ,  G01N21/35 ,  G01N21/65 ,  G01N2021/0118 ,  G01N2021/6417 ,  G01N2201/0221 ,  G01N2201/0627 ,  G01N2201/0634 ,  G01N2201/0691

Abstract: A hand held spectrometer is used to illuminate the object and measure the one or more spectra. The spectral data of the object can be used to determine one or more attributes of the object. In many embodiments, the spectrometer is coupled to a database of spectral information that can be used to determine the attributes of the object. The spectrometer system may comprise a hand held communication device coupled to a spectrometer, in which the user can input and receive data related to the measured object with the hand held communication device. The embodiments disclosed herein allow many users to share object data with many people, in order to provide many people with actionable intelligence in response to spectral data.

公开(公告)号：US20170115219A1

公开(公告)日：2017-04-27

申请号：US15332961

申请日：2016-10-24

Applicant: HORIBA, Ltd.

Inventor： Takuya Ido

IPC: G01N21/59 ,  G01N33/00

CPC classification number: G01N21/59 ,  G01J3/0218 ,  G01J3/10 ,  G01J3/28 ,  G01J3/4338 ,  G01N21/61 ,  G01N33/0073 ,  G01N2021/399 ,  G01N2201/0612 ,  G01N2201/0691 ,  G01N2201/12

Abstract: A gas analyzing apparatus includes a plurality of light sources, an inlet, a light detector, and an analyzing unit. The plurality of light sources simultaneously output a plurality of measurement light beams. The inlet introduces the plurality of measurement light beams into a measurement space. The light detector measures total intensity. The analyzing unit analyzes the target gases based on a difference between a measured target intensity and a reference intensity, in which the measured target intensity is a total intensity measured by the light detector after passing through the measurement space in which one of the target gases exists, while the reference intensity is the total intensity measured by the light detector after passing through the measurement space in which none of the target gases exists.

公开(公告)号：US20160377536A1

公开(公告)日：2016-12-29

申请号：US15192120

申请日：2016-06-24

Applicant: SICK AG

Inventor： Thomas BEYER ,  Julian EDLER

IPC: G01N21/39

CPC classification number: G01N21/39 ,  G01J2003/423 ,  G01J2003/4332 ,  G01N21/031 ,  G01N33/0062 ,  G01N2021/399 ,  G01N2201/0691

Abstract: The invention relates to a method of determining the concentration of a gas component comprising the steps: generating and guiding a light beam having a wavelength variable in a wavelength range through a measurement volume in which the gas component having an absorption in the wavelength range is present; tuning the wavelength range; detecting the intensity of the light beam after passage through the measurement volume; storage of measurement points during the tuning that respectively consist of a point in time and an associated intensity value, to obtain a direct absorption line; generating an artificial measurement curve from the stored measurement points by shifting the measurement points on the time axis; wherein the shift takes place so that an artificial modulation results in the wavelength time extent; and evaluating the artificial measurement curve in accordance with the method of the wavelength modulation spectroscopy and determining a first concentration value therefrom.

公开(公告)号：US20160299065A1

公开(公告)日：2016-10-13

申请号：US15027883

申请日：2015-09-23

Applicant: SIEMENS AKTIENGESELLSCHAFT

Inventor： Franz STEINBACHER

IPC: G01N21/39 ,  G01J3/433 ,  H01S5/062 ,  G01J3/42

CPC classification number: G01N21/39 ,  G01J3/42 ,  G01J3/433 ,  G01N33/0009 ,  G01N2021/399 ,  G01N2201/0612 ,  G01N2201/0691 ,  H01S5/06213 ,  H01S5/06216 ,  H01S5/0622

Abstract: Method and gas analyzer for measuring the concentration of a gas component in a sample gas, wherein to measure the concentration of a gas component in a sample gas, a laser diode is actuated by a current and light generated by the laser diode is guided through the sample gas to a detector, the current is simultaneously varied within periodically successive sampling intervals for the wavelength-dependent sampling of an absorption line of interest of the gas component, and the current can be additionally modulated sinusoidally based on wavelength modulation spectroscopy with a low frequency and small amplitude, such that a measuring signal generated by the detector is evaluated to form a measurement result, where to improve the measuring signal-noise ratio and achieve a much lower detection limit with the same measuring distance, the current is modulated with a high (RF) frequency in the GHz range so that no wavelength modulation occurs, and an RF modulation amplitude is selected at the maximum level using the linear control range of the laser diode where, before evaluation, the measuring signal is demodulated at the radio frequency.

Abstract translation: 用于测量样品气体中气体组分浓度的方法和气体分析器，其中为了测量样品气体中的气体组分的浓度，激光二极管由电流驱动，激光二极管产生的光被引导通过 采样气体到检测器，电流在周期性连续的采样间隔内同时变化，用于气体成分的感兴趣吸收线的波长相关采样，并且可以基于波长调制光谱法以低频率正弦调制电流 并且小振幅，使得由检测器产生的测量信号被评估以形成测量结果，其中改善测量信噪比并且以相同的测量距离实现低得多的检测限，电流被调制为高 （RF）频率，使得不发生波长调制，并且在该频率下选择RF调制幅度 使用激光二极管的线性控制范围的最大电平，其中在评估之前，测量信号在射频处被解调。

公开(公告)号：US09354165B2

公开(公告)日：2016-05-31

申请号：US14409450

申请日：2013-06-19

Applicant: KLEIN MEDICAL LIMITED

Inventor： Raymond Andrew Simpkin ,  Donal Paul Krouse ,  Bryan James Smith

IPC: G01J5/02 ,  G01N21/359 ,  G01N21/31 ,  G01N21/27 ,  G01N21/3577 ,  G01J3/28

CPC classification number: G01J3/108 ,  G01J3/0297 ,  G01J3/28 ,  G01N21/274 ,  G01N21/3577 ,  G01N21/359 ,  G01N2201/0691

Abstract: A method and analyzer for identifying, verifying or otherwise characterizing a sample involves emitting electromagnetic radiation in at least one beam at a sample. The electromagnetic radiation includes at least two different wavelengths. A sample detector detects affected electromagnetic radiation resulting from the emitted electromagnetic radiation affected by the sample and provides output representing the detected affected radiation. A processor determines sample coefficients from the output and identifies, verifies or otherwise characterizes the sample using the sample coefficients and training coefficients determined from training samples. The coefficients reduce sensitivity to a sample retainer variation and/or are independent of concentration.

Abstract translation: 用于识别，验证或以其他方式表征样品的方法和分析仪包括在样品的至少一个束中发射电磁辐射。 电磁辐射包括至少两个不同的波长。 样品检测器检测受样品发射的电磁辐射产生的电磁辐射，并提供表示检测到的受影响辐射的输出。 处理器从输出端确定采样系数，并使用从训练样本确定的采样系数和训练系数来识别，验证或以其他方式表征样本。 系数降低了对样品保持器变化的敏感性和/或不依赖于浓度。

公开(公告)号：US09261453B2

公开(公告)日：2016-02-16

申请号：US14486765

申请日：2014-09-15

Applicant: Siemens Aktiengesellschaft

Inventor： Franz Steinbacher

IPC: G01N21/00 ,  G01N21/39 ,  G01N33/00 ,  G01J3/433

CPC classification number: G01N21/00 ,  G01J3/433 ,  G01J2003/4334 ,  G01N21/39 ,  G01N33/0062 ,  G01N2201/0691

Abstract: Gas analyzer and method for measuring the concentration of a gas component in a sample gas, wherein the wavelength of the light of a wavelength-tunable light source is varied within periodically successive sampling intervals and, in the process, additionally modulated with a frequency to perform wavelength dependent sampling of an absorption line of a gas component to be measured in the sample gas.

Abstract translation: 用于测量样品气体中的气体组分的浓度的气体分析仪和方法，其中波长可调光源的光的波长在周期性连续的采样间隔内变化，并且在该过程中另外以频率进行调制以执行 在样品气体中要测量的气体组分的吸收线的波长依赖性取样。

公开(公告)号：US20150085288A1

公开(公告)日：2015-03-26

申请号：US14486765

申请日：2014-09-15

Applicant: Siemens Aktiengesellschaft

Inventor： Franz STEINBACHER

IPC: G01N21/39 ,  G01N33/00

CPC classification number: G01N21/00 ,  G01J3/433 ,  G01J2003/4334 ,  G01N21/39 ,  G01N33/0062 ,  G01N2201/0691

Abstract: Gas analyzer and method for measuring the concentration of a gas component in a sample gas, wherein the wavelength of the light of a wavelength-tunable light source is varied within periodically successive sampling intervals and, in the process, additionally modulated with a frequency to perform wavelength dependent sampling of an absorption line of a gas component to be measured in the sample gas.

Abstract translation: 用于测量样品气体中的气体组分的浓度的气体分析仪和方法，其中波长可调光源的光的波长在周期性连续的采样间隔内变化，并且在该过程中另外以频率进行调制以执行 在样品气体中要测量的气体组分的吸收线的波长依赖性取样。

公开(公告)号：US20150062582A1

公开(公告)日：2015-03-05

申请号：US14454052

申请日：2014-08-07

Applicant: RICOH COMPANY. LTD.

Inventor： Kazuhiko ADACHI ,  Yoshihiro OBA ,  Toshihiro ISHII ,  Fumikazu HOSHI ,  Sunao CHUBACHI ,  Yoshihiro MISAKA

IPC: G01J4/00 ,  G03G15/00

CPC classification number: G01N21/21 ,  G01B11/06 ,  G01G9/00 ,  G01N21/4738 ,  G01N21/59 ,  G01N2201/06113 ,  G01N2201/062 ,  G01N2201/0691 ,  G01N2201/105 ,  G03G15/5029 ,  G03G2215/00616 ,  G03G2215/00738 ,  G03G2215/00742

Abstract: A sensor apparatus includes an irradiation system with a light source configured to emit linearly polarized light of a first polarization direction onto a sheet-like object, in a direction oblique to a direction orthogonal to a surface of the object, a first photodetector arranged on an optical path of light that is emitted from the irradiation system and then is reflected at the object by regular reflection, a first optical element, arranged on an optical path of light reflected by diffuse reflection from an incidence plane of the object, configured to transmit linearly polarized light of a second polarization direction that is orthogonal to the first polarization direction, a second photodetector configured to receive light that has passed through the first optical element, and a detection unit configured to detect at least one of basis weight and thickness of the object.

Abstract translation: 一种传感器装置，包括具有光源的照射系统，被配置为沿与物体的表面正交的方向倾斜的方向将第一偏振方向的线偏振光发射到片状物体上;第一光电检测器， 从照射系统发射的光的光路，然后通过规则反射在物体处反射;第一光学元件，布置在从物体的入射平面漫反射反射的光的光路上，被配置为线性地透射 与第一偏振方向正交的第二偏振方向的偏振光，被配置为接收通过第一光学元件的光的第二光电检测器，以及检测单元，被配置为检测物体的基重和厚度中的至少一个 。