公开(公告)号：US12031865B2

公开(公告)日：2024-07-09

申请号：US17724944

申请日：2022-04-20

Applicant: Chengdu University of Technology

Inventor： Guoqiang Zeng ,  Min Gu ,  Qing Li ,  Chuanhao Hu ,  Xiaofeng Yang ,  Shimin Hu ,  Jian Yang

IPC: G01J3/28 ,  G01J3/02

CPC classification number: G01J3/0297 ,  G01J3/28

Abstract: The present disclosure provides a multi-parameter calibration system for a spectrometer based on a nanosecond light source, including a main channel for outputting nuclear pulse signals, and a coincidence channel for outputting the nuclear pulse signals. Each channel uses current nuclear pulse signals to drive a light-emitting diode (LED) to emit nuclear pulse optical signals, and a simulated scintillator is irradiated to emit nanosecond nuclear pulse optical signals. The present disclosure can respectively test and calibrate multiple parameter performance indexes of the spectrometer throughput baseline restoration spectrometer. The stability of the spectrometer is tested and calibrated through output of certain regular nuclear pulse signals.

公开(公告)号：US11982618B2

公开(公告)日：2024-05-14

申请号：US17084296

申请日：2020-10-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung Hyun Nam ,  Hyeong Seok Jang ,  Jin Young Park

IPC: G01N21/47 ,  A61B5/145 ,  A61B5/1455 ,  A61B5/1495 ,  G01J3/02 ,  G01J3/10

CPC classification number: G01N21/4785 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1455 ,  A61B5/1495 ,  G01J3/021 ,  G01J3/0297 ,  G01J3/10 ,  A61B2562/0238

Abstract: A method of calibrating an optical sensor may include acquiring a first characteristic for an external light source through a detector of an optical sensor while an internal light source of the optical sensor is turned off; driving the internal light source; acquiring a second characteristic for the internal light source and the external light source through the detector, based on driving the internal light source; and acquiring a reference characteristic of the internal light source, for calculation of an absorbance of an object, based on the first characteristic and the second characteristic.

公开(公告)号：US11946805B2

公开(公告)日：2024-04-02

申请号：US17296050

申请日：2019-11-11

Applicant: Robert Bosch GmbH

Inventor： Thomas Buck ,  Martin Husnik ,  Christian Huber ,  Marc Schmid ,  Benedikt Stein ,  Christoph Daniel Kraemmer

IPC: G01J3/10 ,  G01J3/02 ,  G01J3/26 ,  G01N21/25 ,  G01J3/12

CPC classification number: G01J3/10 ,  G01J3/0272 ,  G01J3/0297 ,  G01J3/26 ,  G01N21/255 ,  G01J2003/1213

Abstract: A spectrometer apparatus is disclosed that includes at least one light source for irradiating a sample with light, an optical detection device for detecting light scattered by the sample, at least one optical filter device, which is arranged in front of and/or behind the sample, a contact sensor device for determining a contact between the sample and the spectrometer apparatus and for outputting a corresponding output signal, a control device for controlling the light source and the detection device in response to the output signal. The control device is designed such that the control device modifies at least one operating parameter of the light source and the detection device, when the output signal indicates the contact between the sample and the spectrometer apparatus. A method for operating a spectrometer apparatus is disclosed as well.

公开(公告)号：US11911152B2

公开(公告)日：2024-02-27

申请号：US16836163

申请日：2020-03-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jun Ho Lee ,  Sang Kyu Kim

IPC: A61B5/1455 ,  A61B5/145 ,  A61B5/00 ,  G01J3/02 ,  G01J3/42

CPC classification number: A61B5/1455 ,  A61B5/14532 ,  A61B5/7275 ,  G01J3/0202 ,  G01J3/0297 ,  G01J3/42 ,  A61B2560/0233

Abstract: An apparatus for estimating a concentration of an analyte includes an optical sensor configured to emit light toward an object and receive light reflected from the object; and a processor configured to obtain a ratio of an absorption coefficient to a scattering coefficient based on the received light, obtain a first absorption spectrum of the object based on the obtained ratio, obtain a second absorption spectrum by eliminating a scattering correction spectrum from the first absorption spectrum, the scattering correction spectrum corresponding to a nonlinear change in the scattering coefficient according to a wavelength of the emitted light, and estimate a concentration of an analyte based on the second absorption spectrum.

公开(公告)号：US20240053198A1

公开(公告)日：2024-02-15

申请号：US17885042

申请日：2022-08-10

Applicant: Wisconsin Alumni Research Foundation

Inventor： Scott Sanders

IPC: G01J3/02 ,  G01J3/42 ,  G01J3/10 ,  G01N21/35

CPC classification number: G01J3/0297 ,  G01J3/0224 ,  G01J3/42 ,  G01J3/0208 ,  G01J3/108 ,  G01N21/35 ,  G01N2021/3595

Abstract: An absorption spectrometer with self-referencing calibration takes two measurements along a first and second path having different distances through a sample while largely preserving all other aspects of the optical path and system constant. Comparing these two measurements allows extraction of the spectrum largely free from instrument-specific artifacts.

公开(公告)号：US20240011830A1

公开(公告)日：2024-01-11

申请号：US18311748

申请日：2023-05-03

Applicant: Photothermal Spectroscopy Corp

Inventor： Derek Decker ,  Craig Prater

IPC: G01J3/02 ,  G01J3/10

CPC classification number: G01J3/0297 ,  G01J3/0216 ,  G01J3/0229 ,  G01J3/108 ,  G01J2003/102

Abstract: Apparatuses and methods for microscopic analysis of a sample using spatial light manipulation to increase signal to noise ratio are described herein.

公开(公告)号：US20230366735A1

公开(公告)日：2023-11-16

申请号：US18028410

申请日：2021-10-12

Applicant: University of Rochester

Inventor： Jaime Cardenas Gonzalez ,  Xiaotong He

IPC: G01J3/02 ,  G01J3/28

CPC classification number: G01J3/0297 ,  G01J3/2803

Abstract: An integrated optical spectrometer includes an optical bus configured to accept a light to be measured. Each ring resonator of an array of integrated ring resonators and detectors is optically coupled to the optical bus and to at least one detector. A matrix multiplication process is operatively coupled to each detector. The matrix multiplication process determines based on data from the array of integrated ring resonators and detectors and a calibration matrix of the array of integrated ring resonators and detectors, a spectral content of the light to be measured. A method of calibrating and operating an integrated optical spectrometer, a method to generate a calibration matrix for a ring array of a photonic integrated circuit (PIC) spectrometer, and a method for spectrum reconstruction for a photonic integrated circuit (PIC) spectrometer are also described.

公开(公告)号：US11788967B2

公开(公告)日：2023-10-17

申请号：US16963679

申请日：2019-01-23

Applicant: DANMARKS TEKNISKE UNIVERSITET

Inventor： Oleksii Ilchenko ,  Tomas Rindzevicius ,  Anja Boisen ,  Roman Slipets

IPC: G01J3/02 ,  G01J3/44 ,  G01N21/65

CPC classification number: G01N21/65 ,  G01J3/0229 ,  G01J3/0297 ,  G01J3/44 ,  G01N2201/0612 ,  G01N2201/0631 ,  G01N2201/0633 ,  G01N2201/0635

Abstract: An apparatus for carrying out Raman spectroscopy on a sample includes a light source for providing a beam of excitation radiation, and an optical system including a spectrograph. The spectrograph includes a grating that divides a beam of scattered light into a spectrum of spatially separated wavelength components and to direct a portion of the spectrum to a detector. The spectrograph includes: 1) a first lens system for focusing the portion of the spectrum onto the detector and 2) a second lens system-configured to provide a focal plane with focal point in the optical path for focusing the beam of excitation radiation and/or the beam of scattered radiation at the focal point. The apparatus including a reference sample arranged in the focal plane, in particular at the focal point, for obtaining a reference spectrum from the reference sample.

公开(公告)号：US20230152153A1

公开(公告)日：2023-05-18

申请号：US17042197

申请日：2020-01-09

Applicant: HEFEI INSTITUTE OF PHYSICAL SCIENCE, CHINESE ACADEMY OF SCIENCES

Inventor： Yingjian WANG ,  Yufei CHU ,  Dong LIU ,  Decheng WU ,  Zhenzhu WANG ,  Kunming XING ,  Zhiqiang KUANG ,  Bangxin WANG ,  Zhiqing ZHONG ,  Aiyuan FAN ,  Chenbo XIE

IPC: G01J3/26 ,  G01J3/45 ,  G01J3/02

CPC classification number: G01J3/26 ,  G01J3/45 ,  G01J3/0208 ,  G01J3/0297

Abstract: This application relates to a device for measuring a transmittance curve of an Fabry-Perot using a frequency comb light source and a method using the same. The device includes the following components sequentially arranged in an optical path: a single frequency pulse laser generating single frequency pulse laser; a frequency comb laser converting received single frequency pulse laser into frequency comb laser; and an Fabry-Perot to be detected receiving laser output from the frequency comb laser; where the device further includes a first receiving unit receiving laser from an output end of the frequency comb laser and performing component and spectrum analysis, and a second receiving unit receiving laser from an output end of the Fabry-Perot to be detected and performing component and spectrum analysis.

公开(公告)号：US10072984B2

公开(公告)日：2018-09-11

申请号：US14874378

申请日：2015-10-02

Applicant: MKS TECHNOLOGY

Inventor： Keith T. Carron ,  Shane A. Buller ,  Mark A. Watson ,  Sean Patrick Woodward

IPC: G01J3/44 ,  G01N21/65 ,  G01J3/02 ,  G01J3/10 ,  G01N21/47

CPC classification number: G01J3/4412 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/027 ,  G01J3/0297 ,  G01J3/10 ,  G01J3/44 ,  G01N21/65 ,  G01N2021/4711 ,  G01N2201/0612 ,  G01N2201/068 ,  G01N2201/12

Abstract: Spectrometers and methods for determining the presence or absence of a material in proximity to and/or combined with another material are provided. In one particular example, a spectrometer is provided that includes a light source, a detector and an optical system. In this implementation, the light source is configured to provide an excitation incident beam. The detector is configured to detect a spectroscopy signal. The optical system is configured to direct the excitation incident beam toward a sample at a non-zero angle from a zero-angle reference. The optical system is further configured to receive a spectroscopy signal from the sample and provide the spectroscopy signal to the detector. The detector is configured to remove a spectral interference component of the spectroscopy signal.