公开(公告)号：US09869587B2

公开(公告)日：2018-01-16

申请号：US15292283

申请日：2016-10-13

Applicant: Beijing Information Science & Technology University

Inventor： Lianqing Zhu ,  Wei He ,  Mingli Dong ,  Fei Luo ,  Feng Liu ,  Xiaoping Lou ,  Hong Li

IPC: G01J3/18 ,  G02B6/02 ,  G02F2/00

CPC classification number: G01J3/1895 ,  G01J3/0208 ,  G01J3/28 ,  G01J3/2803 ,  G02B6/02076 ,  G02F2/00

Abstract: A fiber grating demodulation system for enhancing spectral resolution by finely adjusting a linear array detector, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, a linear array detector. The laser pump source, the wavelength division multiplexer, and the fiber Bragg grating are connected in sequence, the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, and a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, the imaging focus mirror in sequence, and is finally converged to the linear array detector.

公开(公告)号：US20170356847A1

公开(公告)日：2017-12-14

申请号：US15651695

申请日：2017-07-17

Applicant: IFE Innovative Forschungs- und Entwicklungs GmbH & Co. KG

Inventor： Thomas Willuweit ,  Ralf Griesbach

IPC: G01N21/64 ,  G01J3/02 ,  G01N21/25 ,  G01J3/32 ,  G01J3/10 ,  G01J3/28 ,  G01J3/44

CPC classification number: G01N21/64 ,  G01J3/0218 ,  G01J3/0256 ,  G01J3/0264 ,  G01J3/0272 ,  G01J3/0291 ,  G01J3/10 ,  G01J3/28 ,  G01J3/32 ,  G01J3/4406 ,  G01N21/251 ,  G01N21/645 ,  G01N2201/024 ,  G01N2201/08

Abstract: The invention provides a measuring device for analyzing a luminescent sample and, in particular, for measuring the concentration of at least one analyte in a luminescent sample, comprising: a housing with a sample receptacle space for accommodating a sample container; a sample container for accommodating the luminescent sample; a radiation receiver apparatus for receiving radiation emitted by the luminescent sample; and an evaluation apparatus for evaluating the radiation from the luminescent sample received by the radiation receiver apparatus. The invention moreover provides a measuring device comprising a base part and a measuring head arranged at the base part in an interchangeable manner, wherein the measuring head is embodied to analyze the luminescent sample or it is embodied as a spectrometer measuring head.

公开(公告)号：US20170344845A1

公开(公告)日：2017-11-30

申请号：US15535128

申请日：2015-12-17

Applicant: NEC Corporation

Inventor： Eiji KANEKO

IPC: G06K9/40 ,  G01J3/28 ,  G06K9/00 ,  G06K9/46

CPC classification number: G06K9/40 ,  G01J3/28 ,  G01N21/27 ,  G06K9/0063 ,  G06K9/4661 ,  G06T1/00

Abstract: In an image representing an observed ground surface area, the device calculates an optical-path-radiance with a high degree of accuracy. An image information processing device 3 includes: a storage unit 31 that associates and stores observation images representing the results of observing electromagnetic waves of a plurality of different wavelength bands reflected from a ground surface, information representing the wavelength bands, and information representing the observation environment; a first intermediate-optical-path-radiance calculation unit that, for each of the wavelength band, makes the radiance of a dark pixel meeting a radiance standard from among pixels composing an associated observation image an intermediate-optical-path-radiance; an irradiance calculation unit that calculates the irradiance from sunlight for each of the wavelength band on the basis of the information representing the observation environment; and a final-optical-path-radiance calculation unit that calculates a final-optical-path-radiance for each of the wavelength band on the basis of the irradiance and intermediate-optical-path-radiance.

公开(公告)号：US09829378B1

公开(公告)日：2017-11-28

申请号：US15292593

申请日：2016-10-13

Applicant: Bentley Instruments, Inc.

Inventor： Craig Parsons ,  Henrik Lyder

IPC: G01N21/00 ,  G01J3/02 ,  G01J3/42 ,  G01B11/02

CPC classification number: G01J3/027 ,  G01B11/02 ,  G01J3/0267 ,  G01J3/28 ,  G01J3/42 ,  G01N21/274 ,  G01N21/3577 ,  G01N33/04

Abstract: A transmission spectroscopy device can direct light into a sample, and determine properties of the sample based on how much light emerges from the sample. The device can use a cell to contain the sample, so that the size of the cell defines the optical path length traversed by light in the sample. To ensure accuracy in the measurements, it is beneficial to calibrate the device by measuring the size of the cell periodically or as needed. To measure the size of the cell, the device can perform a transmission spectroscopy measurement of a known substance, such as pure water, to produce a measured absorbance spectrum of the known substance. The device can subtract a known absorbance spectrum of the known substance from the measured absorbance spectrum to form an oscillatory fringe pattern. The device can determine the size of the cell from a period of the fringe pattern.

公开(公告)号：US09823128B2

公开(公告)日：2017-11-21

申请号：US15027501

申请日：2014-10-16

Applicant: THE ARIZONA BOARD OF REGENTS on behalf of THE UNIVERSITY OF ARIZONA

Inventor： Stanley Pau ,  Amit Ashok

IPC: G01N21/25 ,  G01J3/28 ,  G01J3/51 ,  G01J3/36 ,  G01J3/45

CPC classification number: G01J3/2823 ,  G01J3/28 ,  G01J3/2803 ,  G01J3/36 ,  G01J3/45 ,  G01J3/513 ,  G01J2003/2806 ,  G01J2003/2826

Abstract: Multispectral imaging systems are disclosed. An exemplary multispectral imager includes a narrow-band absorptive filter array and a sensor array comprising a plurality of pixels. The narrow-band absorptive filter array has a plurality of filter elements, each filter element being associated with a pixel of the sensor array. The filter elements are organized into groups of N filter elements, where N is greater than three. Each filter element absorbs one narrow band and transmits N−1 narrow bands. The group of N filter elements absorbs all N narrow bands.

公开(公告)号：US20170328771A1

公开(公告)日：2017-11-16

申请号：US15402751

申请日：2017-01-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tae-Yong JO ,  Young-Joo LEE ,  Chang-Hoon CHOI ,  Jong-Jeong KIM

IPC: G01J3/02

CPC classification number: G01J3/0297 ,  G01J3/28

Abstract: A method of calibrating a measuring apparatus includes determining apparatus parameters that have an influence on a measurement spectrum generated by the measuring apparatus, generating the measurement spectrum by exposing a measurement target on a sample to light generated by the measuring apparatus, calculating an error of the apparatus parameters by comparing the measurement spectrum to an ideal spectrum corresponding to the apparatus parameters, and calibrating the measuring apparatus based on the calculated error of the apparatus parameters.

公开(公告)号：US20170319185A1

公开(公告)日：2017-11-09

申请号：US15590094

申请日：2017-05-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seonmyeong CHOI ,  Woochang LEE ,  June Young LEE

IPC: A61B10/00 ,  A61B5/145 ,  A61B5/15

CPC classification number: A61B10/0045 ,  A61B5/0075 ,  A61B5/1405 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1495 ,  A61B2560/0223 ,  G01J3/28 ,  G01J3/42 ,  G01J3/44 ,  G01N21/35 ,  G01N21/359 ,  G01N33/4833 ,  G01N2201/129

Abstract: Disclosed is a method for predicting an in vivo concentration of an analyte, including: estimating an in vivo intrinsic spectrum of the analyte; and predicting the in vivo concentration of the analyte by using a concentration predicting algorithm based on the estimated in vivo intrinsic spectrum and an in vivo spectrum obtained during a section in which the in vivo concentration of the analyte is not substantially changed.

公开(公告)号：US20170311898A1

公开(公告)日：2017-11-02

申请号：US15523022

申请日：2014-11-14

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Hyeon Min BAE ,  Jong Kwan CHOI ,  Min Gyu CHOI ,  Jae Myoung KIM ,  Gun Pil HWANG

IPC: A61B5/00 ,  A61B5/145 ,  A61B5/1455 ,  G01N21/359 ,  G01J3/28 ,  G01J3/02 ,  G01J3/10

CPC classification number: A61B5/725 ,  A61B5/0075 ,  A61B5/14546 ,  A61B5/14553 ,  A61B5/7225 ,  G01J3/027 ,  G01J3/108 ,  G01J3/28 ,  G01J3/2889 ,  G01J2003/102 ,  G01N21/25 ,  G01N21/359 ,  G01N2201/06113 ,  G01N2201/062

Abstract: Disclosed are an optical spectroscopy system using a matched filter-based broadband signal receiver for stable data extraction, and a method for controlling the optical spectroscopy system. The optical spectroscopy system may comprise: a light transmission unit for irradiating light on a particular region of a subject by means of a plurality of light sources, wherein the light irradiated from the plurality of light sources is code-modulated by means of the Walsh codes and then irradiated; and a light receiving unit for detecting emergent light which has passed through the particular region, wherein the light source is identified by demodulating the light by means of the Walsh codes.

公开(公告)号：US09797876B2

公开(公告)日：2017-10-24

申请号：US15357225

申请日：2016-11-21

Applicant: OMNI MEDSCI, INC.

Inventor： Mohammed N. Islam

IPC: G01J3/00 ,  G01N33/15 ,  A61B5/1455 ,  A61B5/00 ,  G01J3/10 ,  G01J3/28 ,  G01J3/453 ,  G01N21/359 ,  A61B5/145 ,  G01N33/49 ,  G01N21/3563 ,  G01N21/39 ,  G01N33/02 ,  G01N33/44 ,  G01N21/88 ,  H01S3/30 ,  G01J3/14 ,  G01J3/18 ,  G01M3/38

CPC classification number: A61B5/0088 ,  A61B5/0013 ,  A61B5/0022 ,  A61B5/0075 ,  A61B5/0086 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1455 ,  A61B5/4547 ,  A61B5/6801 ,  A61B5/7257 ,  A61B5/7405 ,  A61B5/742 ,  A61B2562/0233 ,  A61B2562/0238 ,  A61B2562/146 ,  A61B2576/02 ,  G01J3/0218 ,  G01J3/108 ,  G01J3/14 ,  G01J3/1838 ,  G01J3/28 ,  G01J3/2823 ,  G01J3/42 ,  G01J3/453 ,  G01J2003/104 ,  G01J2003/1208 ,  G01J2003/2826 ,  G01M3/38 ,  G01N21/35 ,  G01N21/3563 ,  G01N21/359 ,  G01N21/39 ,  G01N21/85 ,  G01N21/88 ,  G01N21/9508 ,  G01N33/02 ,  G01N33/025 ,  G01N33/15 ,  G01N33/442 ,  G01N33/49 ,  G01N2021/3595 ,  G01N2021/399 ,  G01N2201/061 ,  G01N2201/06113 ,  G01N2201/062 ,  G01N2201/08 ,  G01N2201/12 ,  G01N2201/129 ,  G06F19/00 ,  G16H40/67 ,  H01S3/0092 ,  H01S3/06758 ,  H01S3/302

Abstract: A measurement system includes semiconductor light sources generating an input beam, optical amplifiers receiving the input beam and delivering an intermediate beam, and fused silica fibers with core diameters less than 400 microns receiving and delivering the intermediate beam to the fibers forming a first optical beam. A nonlinear element receives the first optical beam and broadens the spectrum to at least 10 nm through a nonlinear effect to form the output optical beam which includes a near-infrared wavelength of 700-2500 nm. A measurement apparatus is configured to receive the output optical beam and deliver it to a sample to generate a spectroscopy output beam. A receiver receives the spectroscopy output beam having a bandwidth of at least 10 nm and processes the beam to generate an output signal, wherein the light source and the receiver are remote from the sample, and wherein the sample comprises plastics or food industry goods.

公开(公告)号：US09797776B2

公开(公告)日：2017-10-24

申请号：US15166374

申请日：2016-05-27

Applicant: Sean Xiaolu Wang ,  Qun Li

Inventor： Sean Xiaolu Wang ,  Qun Li

IPC: G01J3/30 ,  G01J3/443 ,  G01J3/10 ,  G01J3/06 ,  G01J3/02 ,  G01J3/28

CPC classification number: G01J3/443 ,  G01J3/0208 ,  G01J3/06 ,  G01J3/10 ,  G01J3/28

Abstract: This invention discloses a laser induced breakdown spectroscopy (LIBS) apparatus based on a high repetition rate pulsed laser. The laser produces a train of laser pulses at a high repetition rate in the kHz or even higher range. When the laser beam hits the sample, it generates several thousands of micro-plasma emissions per second. Synchronized miniature CCD array optical spectrometer modules collect the LIBS signal from these micro-plasma emissions. By adjusting the integration time of the spectrometer to cover a plurality of periods of the laser pulse train, the spectrometer integrates the LIBS signal produced by this plurality of laser pulses. Hence the intensity of the obtained LIBS spectrum can be greatly improved to increase the signal-to-noise ratio (SNR) and lower the limit of detection (LOD). In addition, the influence of pulse to pulse variation of the laser is minimized since the obtained LIBS spectrum is the spectrum of a plurality of micro-plasma emissions produced by a plurality of laser pulses. The high repetition rate laser also makes it possible to measure the LIBS signal at a short and a long integration time and mathematically combining the two spectra to obtain a LIBS spectrum with enhanced dynamic range.