公开(公告)号：US20190271595A1

公开(公告)日：2019-09-05

申请号：US16292676

申请日：2019-03-05

Applicant: UT-Battelle, LLC

Inventor： Azhad U. Chowdhury ,  Benjamin L. Doughty ,  Daniel A. Lutterman ,  Yingzhong Ma ,  Tessa R. Calhoun ,  Brianna R. Watson

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

Abstract: A vibrational sum frequency generation spectroscopy system with pulse shaping is provided. The pulse shaping provides tunable NIR-Shaped light pulses based on user input parameters which may be specified to customize the system for different experimental and testing conditions or needs.

公开(公告)号：US10359360B2

公开(公告)日：2019-07-23

申请号：US15005384

申请日：2016-01-25

Applicant: ABB, Inc.

Inventor： Daniele Angelosante ,  Andrew Fahrland ,  Deran Maas ,  Manish Gupta

IPC: G01N21/39 ,  G01J3/02 ,  G01J3/42 ,  G01J3/28 ,  G01J3/433

Abstract: A method of processing raw measurement data from a tunable diode laser absorption spectroscopy (TDLAS) tool or other spectroscopic instrument is provided that determines what types of noise (electronic or process flow) are present in the measurement. Based on that determination, the noise is reduced by performing a weighted averaging using weights selected according to the dominant type of noise present, or a general case is applied to determine weights where neither noise type is dominant. The method also involves performing continuous spectroscopy measurements with the tool, with the data and weighted averaging being constantly updated. Weighting coefficients may also be adjusted based on similarity or difference between time-adjacent traces.

公开(公告)号：US20190101445A1

公开(公告)日：2019-04-04

申请号：US16145957

申请日：2018-09-28

Applicant: Michael John Darwin

Inventor： Michael John Darwin

IPC: G01J3/28 ,  G01J3/26 ,  G01J3/433 ,  G01N21/3504 ,  G01N21/31

Abstract: A method and apparatus for the generation of hyperspectral images for an object consisting of a broad band light projection systems, a means of modulating the wavelength of the light, one or more sensors for observing the reflected light, one or more electronic means of synchronizing and extracting data from the sensor, one or more sensors for registering position, one or more calibration methods for rationalizing the data, and one or more algorithms for analyzing the data to produce the hyperspectral image.

公开(公告)号：US10215845B2

公开(公告)日：2019-02-26

申请号：US15151812

申请日：2016-05-11

Applicant: Andreas Hangauer ,  Gerard Wysocki

Inventor： Andreas Hangauer ,  Gerard Wysocki

IPC: G01S7/48 ,  G01S17/32 ,  G01S17/95 ,  G01N21/39 ,  G01J3/02 ,  G01J3/433 ,  G01N21/17 ,  G01J1/42

Abstract: A system for simultaneous optical pathlength determination and remote chemical sensing of a sample disposed along an optical path. A modulated laser source configured for modulated light emission so that at least one spectral sideband with a sideband frequency is created, the modulated light emission is directed along the optical path and sideband frequency is varied over time. A detector is configured to detect transmitted light along the optical path and generate a detected light intensity signal. A frequency down-converter is configured to receive the detected light emission signal and generate a frequency down-converted light intensity signal. A demodulator is configured to demodulate the frequency of the down-converted light intensity signal and output an instantaneous frequency. A pathlength calculator is configured to determine an optical pathlength to the sample based on the instantaneous frequency. A frequency down-converted light intensity signal is simultaneously output for spectroscopic chemical sensing.

公开(公告)号：US10215689B2

公开(公告)日：2019-02-26

申请号：US15874956

申请日：2018-01-19

Applicant: Hong Kong Applied Science and Technology Research Institute Company Limited

Inventor： Jiaqi Wang ,  Chun Zhang ,  Wei Mong Tsang

IPC: G01N21/25 ,  G01J3/433

Abstract: A derivative spectroscopy system for achieving a tunable resolution of 2 nm or less in resolving spectral components of an input optical signal is provided so as to estimate derivative spectra of the input optical signal based on the resolved spectral components. In the system, a first dispersive-element structure spectrally decomposes the input optical signal into subband signals. A second dispersive-element structure receives part or all of the subband signals and spectrally decomposes the received subband signals to plural spectral components. A material having a temperature-variant refractive index is used to build the second dispersive-element structure, enabling a shift of center wavelength of each spectral component as small as 2 nm of less upon changing a temperature of the second dispersive-element structure. By obtaining three spectral-component sets obtained at three different predetermined temperatures with the center-wavelength shift of 2 nm or less, first- and second-order derivative spectra are obtained with good accuracy.

公开(公告)号：US20190033131A1

公开(公告)日：2019-01-31

申请号：US16151013

申请日：2018-10-03

Applicant: CANON KABUSHIKI KAISHA

Inventor： Naoki Kohara

IPC: G01J3/02 ,  H01S3/23 ,  H01S3/108 ,  H01S3/00 ,  G01N21/65 ,  G01J3/44 ,  G01J3/433

Abstract: A noise reduction apparatus includes a first delaying/combining unit configured to output first and second pulse light beams, and a second delaying/combining unit configured to branch the first pulse light beam into two pulse light beams to output third and fourth pulse light beams and branch the second pulse light beam into two pulse light beams to output fifth and sixth pulse light beams.

公开(公告)号：US10168212B2

公开(公告)日：2019-01-01

申请号：US14964956

申请日：2015-12-10

Applicant: Thorlabs, Inc.

Inventor： James Jiang ,  Marshall Scott ,  Eric Geoffrion ,  Alex Cable

IPC: G01J3/36 ,  G01J3/433 ,  G01N21/17 ,  G01N21/39

Abstract: A system capable of highly sensitive measurement of material concentration values in a sample using an optical spectroscopic method is disclosed. The system utilizes high-speed data acquisition and high resolution sampling of the raw signals output by the sensors with reduced total channel counts, and performs frequency analysis of the signals using the Fourier transform method to process all sensor channels in parallel. When each sensor is targeting the detection of some certain materials at some certain frequencies, the system is capable of simultaneous detection of multiple materials of interest in the sample with high measurement sensitivity and high speed.

公开(公告)号：US20180299372A1

公开(公告)日：2018-10-18

申请号：US16013030

申请日：2018-06-20

Applicant: Halliburton Energy Services, Inc.

Inventor： Michael T. Pelletier ,  David L. Perkins ,  Li Gao

IPC: G01N21/31 ,  G01N21/25 ,  G01V8/00 ,  G01J3/433

CPC classification number: G01N21/31 ,  G01J3/433 ,  G01N21/255 ,  G01N2021/3137 ,  G01N2021/317 ,  G01V8/00

Abstract: A system and method are disclosed for configuring an integrated computational element (ICE) to measure a property of a sample of interest. The system includes an illumination source to provide a sample light which is reflected from or transmitted through a sample. A dispersive element disperses the sample light into wavelength portions. An intensity modulation device having an array of electronically controllable modulation elements is disclosed that forms a pattern which modulates the dispersed sample light. Collection optics focuses the modulated sample light on a detector, which generates a signal that correlates to a property of the sample. The electronically controllable modulation elements can be readily altered to conform to a different measurable property of a sample of interest as desired.

公开(公告)号：US10066997B2

公开(公告)日：2018-09-04

申请号：US15120373

申请日：2015-02-17

Applicant: Universität Stuttgart

Inventor： Klaus Körner ,  Wolfgang Osten ,  Tobias Boettcher ,  Wolfram Lyda ,  Marc Gronle

IPC: G01N21/25 ,  G01J3/28 ,  G01J3/10 ,  G01J3/433 ,  G01B11/25 ,  G01J3/02 ,  G01B11/14 ,  G01B11/24 ,  G01J3/26

Abstract: The invention relates to methods and to devices for generating multispectral illuminating light having an addressable spectrum, for adaptive multispectral imaging and for capturing structural and/or topographical information of an object or of the distance to an object. The illuminating device comprises a multispectral light source and a modulator for temporal modulation of the individual spectral components of the multispectral light source having modulation frequencies. The multispectral light source comprises at least one light source having a continuous, quasi-continuous, or frequency comb spectrum and wavelength-dispersive means, or an assembly or array of monochromatic or quasi-monochromatic light sources having emission wavelengths or emission wavelength bands which are different from one another in each case. The modulator comprises at least one electrically controllable three-dimensional light modulator, or a plurality of electronic control modules assigned to the individual monochromatic or quasi-monochromatic light sources.

公开(公告)号：US10031398B2

公开(公告)日：2018-07-24

申请号：US14789162

申请日：2015-07-01

Applicant: The University of Bristol

Inventor： Jonathan C. F. Matthews ,  Damien Bonneau ,  Mark Gerard Thompson

IPC: G02F1/35 ,  G02F1/39 ,  G01J3/02 ,  G01J3/10 ,  G01J3/42 ,  G01J3/433

Abstract: There is presented a spectroscopic apparatus and method wherein an input light source that inputs pump light to a photon pair source. The photon pair source converts pump photons into signal and idler photon pairs. The photon pair source is, in some of examples described herein, tuneable so that the wavelength of the signal and idler photons can be changed by application of a tuning means. At least one of the signal and idler photons is made incident upon a medium under test. A heralding detection apparatus is used to detect any signal and idler photons output from the spectroscopy apparatus, wherein at least one of the photons of the pair has interacted with or been operated upon by the medium under test.