公开(公告)号：US2439373A

公开(公告)日：1948-04-06

申请号：US55594144

申请日：1944-09-27

Applicant: AMERICAN CYANAMID CO

Inventor： STEARNS JR EDWIN I

IPC: G01J3/427

CPC classification number: G01J3/427

公开(公告)号：US12050171B2

公开(公告)日：2024-07-30

申请号：US17831458

申请日：2022-06-03

Applicant: IDEXX Laboratories Inc.

Inventor： Garland Christian Misener ,  Bailey R. Auspland

IPC: G01N21/27 ,  G01J3/02 ,  G01J3/28 ,  G01J3/42 ,  G01J3/427 ,  G01N33/72

CPC classification number: G01N21/274 ,  G01J3/027 ,  G01J3/42 ,  G01J3/427 ,  G01N33/721 ,  G01J2003/2879

Abstract: A method for calibrating sensitivity of a photometer includes measuring, by a double-beam spectrophotometer, an absorbance spectrum of a control solution, which has been diluted and includes a control substance. The method further includes linearly regressing the absorbance spectrum of the control solution over a predetermined range of wavelengths and determining whether a first slope of the linearly regressed absorbance spectrum of the control solution falls within a range of slopes of lines obtained from linearly regressing absorbance spectra of a plurality of reference solutions over the predetermined range of wavelengths. A concentration of chromophore in each reference solution is known and the absorbance spectra of the plurality of reference solutions have been obtained by the double-beam spectrophotometer.

公开(公告)号：US11680892B2

公开(公告)日：2023-06-20

申请号：US17316453

申请日：2021-05-10

Applicant: Photothermal Spectroscopy Corp.

Inventor： Craig Prater ,  Kevin Kjoller ,  Roshan Shetty

IPC: G01J3/427 ,  G01N21/17 ,  G01J3/28 ,  G01J3/44 ,  G01N21/64 ,  G01N21/65

CPC classification number: G01N21/171 ,  G01J3/2823 ,  G01J3/427 ,  G01J3/4406 ,  G01J3/4412 ,  G01N21/6458 ,  G01N21/65 ,  G01N2021/1714

Abstract: System for performing chemical spectroscopy on samples from the scale of nanometers to millimeters or more with a multifunctional platform combining analytical and imaging techniques including dual beam photo-thermal spectroscopy with confocal microscopy, Raman spectroscopy, fluorescence detection, various vacuum analytical techniques and/or mass spectrometry. In embodiments described herein, the light beams of a dual-beam system are used for heating and sensing.

公开(公告)号：US20190212261A1

公开(公告)日：2019-07-11

申请号：US16352351

申请日：2019-03-13

Applicant: FLIR Systems AB

Inventor： Tomas Lannestedt ,  Ulf Wallgren ,  Jonas Sandsten

IPC: G01N21/3504 ,  G01J3/427

CPC classification number: G01N21/3504 ,  G01J3/427 ,  G01N2201/0221

Abstract: Systems and methods disclosed herein provide for detecting gas by: illuminating, with a controllable illuminator system, a scene with light including radiation within the infrared (IR) wavelength range; controlling the illuminator system to emit light at a first wavelength corresponding to a first absorption level of a gas and at a second wavelength corresponding to a second absorption level of a gas, such that an equal amount of radiant energy over a time period is emitted onto the scene for each of said first and second wavelengths; and capturing a first IR image of the scene being illuminated with light at said first wavelength and a second IR image of the scene illuminated with light at said second wavelength, and comparing said first and second IR images to determine whether a characteristic for at least one specific gas is represented in said first and/or second IR images.

公开(公告)号：US20190069476A1

公开(公告)日：2019-03-07

申请号：US16106201

申请日：2018-08-21

Applicant: TOPCON CORPORATION

Inventor： Taichi YUASA

IPC: A01C21/00 ,  G01J3/02 ,  G01J3/10 ,  G01J3/427 ,  G01N21/3563

CPC classification number: A01C21/007 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0218 ,  G01J3/0224 ,  G01J3/024 ,  G01J3/0272 ,  G01J3/0286 ,  G01J3/0289 ,  G01J3/0291 ,  G01J3/10 ,  G01J3/108 ,  G01J3/427 ,  G01J2003/104 ,  G01J2003/4275 ,  G01N21/3563 ,  G01N21/359 ,  G01N2021/1797 ,  G01N2021/3181 ,  G01N2021/8466 ,  G01N2201/0214 ,  G01N2201/0221 ,  G01N2201/0627 ,  G01N2201/0691

Abstract: A light source section configured to couple a plurality of laser beams having different wavelengths and emit measuring light; an illuminating section configured to illuminate a measurement target at a predetermined angle; a light receiving section configured to receive reflected measuring light from the measurement target; and a controlling section configured to compute a reflectance at each of the wavelengths, based on a light receiving result. The light source section includes: a first and a second light source configured to emit each laser beams having different wavelengths; and a dichroic mirror disposed in optical axes of the laser beams intersected, configured to combine the laser beams. The light receiving section includes: a first, a second and a third light receiving unit configured to receive the reflected measuring light from different distance. The controlling section is configured to select which of results from each light receiving unit to use.

公开(公告)号：US20190056270A1

公开(公告)日：2019-02-21

申请号：US15768548

申请日：2017-03-02

Applicant: CI SYSTEMS (ISRAEL) LTD.

Inventor： Dario CABIB

IPC: G01J3/45 ,  G01J3/427 ,  G01J3/433

CPC classification number: G01J3/45 ,  G01J3/0205 ,  G01J3/26 ,  G01J3/427 ,  G01J3/4338 ,  G01J3/4531 ,  G01J3/4532 ,  G01J2003/425 ,  G02B27/50

Abstract: An interference fringe pattern generator forms an interference fringe pattern from the light rays diffused from a region of an object positioned against a background. A planar array of detector pixels is arranged to capture an image of the interference fringe pattern. A storage medium records information indicative of intensity values of the image of the interference fringe pattern captured by a selected group of pixels of the planar array of detector pixels. The information is recorded as a function of the optical path difference values traversed by the diffused light rays through the interference fringe pattern generator for each of the pixels in the selected group of pixels. A processor determines the spectral characteristics of the object based on the information indicative of the intensity values recorded by the storage medium and the optical path difference values traversed by the diffused light rays.

公开(公告)号：US20180356290A1

公开(公告)日：2018-12-13

申请号：US15778753

申请日：2015-11-26

Applicant: Sensirion AG

Inventor： Martin WINGER ,  Marc VON WALDKIRCH ,  Matthias STREIFF ,  Alexander LOCHBAUM ,  Jürg LEUTHOLD

IPC: G01J5/08 ,  G01J5/10 ,  G01J5/06 ,  G01J3/427 ,  G01N21/3504

CPC classification number: G01J5/0853 ,  G01J3/42 ,  G01J3/427 ,  G01J5/061 ,  G01J5/10 ,  G01J2005/106 ,  G01N21/3504

Abstract: An infrared device comprises a substrate (1), and arranged on or in the substrate (1) a configuration (3) for one of selectively emitting and selectively absorbing infrared radiation of a band, the configuration (3) comprising a pattern made from an electrically conducting material on a first level (L1), an electrically conducting film (33) on a second level (L2), and a dielectric layer (24) between the pattern and the film (33). One or more of a heater (4) for heating the configuration (3), and a thermal sensor (5) arranged for sensing the selective infrared radiation of the band absorbed by the configuration (3) on or in the substrate.

公开(公告)号：US09778111B2

公开(公告)日：2017-10-03

申请号：US15445021

申请日：2017-02-28

Applicant: Commissariat a l'energie atomique et aux energies alternatives

Inventor： Sylvain Stanchina ,  Anne Koenig

IPC: G01J3/00 ,  G01J3/427 ,  G01N21/359 ,  G01N21/49 ,  G01N21/59 ,  A61B5/024 ,  G01N21/31

CPC classification number: G01J3/427 ,  A61B5/024 ,  A61B5/02433 ,  A61B5/14552 ,  A61B5/7214 ,  A61B5/7282 ,  A61B2562/0238 ,  G01N21/359 ,  G01N21/49 ,  G01N21/59 ,  G01N2021/3129

Abstract: The invention is a method for estimating a cardiac frequency via the detection of radiation backscattered or transmitted by a bodily zone. The part is illuminated, simultaneously or successively, by light radiation extending over a first spectral band and a second spectral band. A photodetector detects radiation emitted by the bodily zone under the effect of its illumination, in each of the spectral bands. A first detection function and a second detection function are formed from the radiation detected in each spectral band, respectively. The method allows the cardiac frequency to be determined via the determination of characteristic instants that are identified from the first detection function and the second detection function simultaneously.

公开(公告)号：US20170248469A1

公开(公告)日：2017-08-31

申请号：US15445021

申请日：2017-02-28

Applicant: Commissariat a l'energie atomique et aux energies alternatives

Inventor： Sylvain STANCHINA ,  Anne KOENIG

IPC: G01J3/427 ,  A61B5/024 ,  G01N21/59 ,  G01N21/359 ,  G01N21/49

CPC classification number: G01J3/427 ,  A61B5/024 ,  A61B5/02433 ,  A61B5/14552 ,  A61B5/7214 ,  A61B5/7282 ,  A61B2562/0238 ,  G01N21/359 ,  G01N21/49 ,  G01N21/59 ,  G01N2021/3129

Abstract: The invention is a method for estimating a cardiac frequency via the detection of radiation backscattered or transmitted by a bodily zone. The part is illuminated, simultaneously or successively, by light radiation extending over a first spectral band and a second spectral band. A photodetector detects radiation emitted by the bodily zone under the effect of its illumination, in each of the spectral bands. A first detection function and a second detection function are formed from the radiation detected in each spectral band, respectively. The method allows the cardiac frequency to be determined via the determination of characteristic instants that are identified from the first detection function and the second detection function simultaneously.

公开(公告)号：US09677933B2

公开(公告)日：2017-06-13

申请号：US14010675

申请日：2013-08-27

Applicant: University of Maribor

Inventor： Denis Donlagic ,  Simon Pevec

IPC: G01J3/02 ,  G01J3/28 ,  G01J3/10 ,  G01L9/00 ,  G01J3/26 ,  G01J3/32 ,  G01J3/42 ,  G01J3/427

CPC classification number: G01J3/0218 ,  G01B2290/25 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/0237 ,  G01J3/0289 ,  G01J3/10 ,  G01J3/26 ,  G01J3/28 ,  G01J3/2803 ,  G01J3/32 ,  G01J3/42 ,  G01J3/427 ,  G01J2003/102 ,  G01J2003/104 ,  G01L9/0079

Abstract: An optical system having an optical sensor with an ultra-short FP cavity, and a low-resolution optical interrogation system coupled to the optical sensor and operational to send light signals and receive light signals to and from the optical sensor is disclosed. The optical system may operate in a wavelength range including the visible and near-infrared range. Methods of interrogating optical sensors are provided, as are numerous other aspects.