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201.发明申请公开(公告)号：US20210196155A1
公开(公告)日：2021-07-01
申请号：US17203087
申请日：2021-03-16
Applicant: Rijul GUPTA
Inventor： Rijul GUPTA
IPC: A61B5/1455 , A61B5/145 , G01J3/00 , A61B5/00 , G01N21/31 , G01N21/47 , G01J3/28 , G01N21/49 , G01J3/02 , G01J3/10 , G01J3/427 , G01J3/457
Abstract: A multi-channel measurement device for measuring properties of human tissue, may comprise a microcontroller and first and second source/sensor complexes. The first source/sensor complex may include a first housing having a first measurement portion, a first light sensor coupled to the microcontroller and exposed to the first measurement portion, and a first plurality of light sources coupled to the microcontroller and exposed to the first measurement portion. The second source/sensor complex may include a second housing having a second measurement portion, a second light sensor coupled to the microcontroller and exposed to the second measurement portion, and a second plurality of light sources coupled to the microcontroller and exposed to the second measurement portion. The first and second source/sensor complexes are coupled to each other such that the first measurement portion is opposite the second measurement portion and human tissue may be placed between the the first and second measurement portions. The microprocessor is configured with instructions stored in non-volatile memory to individually activate each of the light sources of the first and second pluralities of light sources and to record light intensity detected by the first and second light sources while an individual light source is activated. Each combination of an individually activated light source and one of the first and second light sensors provides a distinct measurement channel for measuring the absorption spectra of human blood and tissue.
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公开(公告)号：US11022547B2
公开(公告)日：2021-06-01
申请号：US16492802
申请日：2018-03-07
Applicant: ELICHENS
Inventor： Hélène Duprez
IPC: G01N21/3504 , G01N21/31 , G01J3/02 , G01J3/427
Abstract: A gas sensor comprises a chamber configured to receive a gas; a light source configured to emit a light wave propagating through the chamber in an emission cone; a measurement photodetector and a reference photodetector, each configured to detect a light wave emitted by the light source and having passed through the chamber. The chamber extends between two transverse walls, arranged opposite one another and connected to one another by a peripheral wall extending therebetween, about a longitudinal axis (Z), and comprising a first reflective segment configured to receive a first portion of the emission cone to reflect it toward the measurement photodetector, thus forming a measurement cone converging toward the measurement photodetector. A second reflective segment of the peripheral wall is configured to receive a second portion of the emission cone to reflect it toward the reference photodetector, thus forming a reference cone converging toward the reference photodetector.
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公开(公告)号：US11015975B2
公开(公告)日：2021-05-25
申请号：US16613614
申请日：2018-05-15
Applicant: The Trustees of Princeton University
Inventor： Lukasz Sterczewski , Jonas Westberg , Gerard Wysocki
Abstract: Disclosed herein is an all-digital phase and timing correction procedure for coherent averaging in dual-comb and multiheterodyne spectroscopy—applicable to any dual-comb spectroscopy setup. It can account for large frequency/phase instabilities of the used sources, yielding a significant reduction of the noise pedestal and an increase in signal-to-noise ratio (SNR) of the radio frequency (RF) beat notes. This technique is computationally efficient and can be conveniently implemented either as a post-processing algorithm or in a real-time data acquisition and processing platform without the necessity of adding any additional optical elements to the dual-comb spectroscopy system. By implementing this technique, the performance of any comb- or comb-like-source-based DCS system with a sufficient degree of mutual coherence between the optical modes can be improved in terms of SNR and number of spectroscopically-usable RF beat notes. The described technique is compatible with a DC-centered RF spectrum, where the negative frequencies are folded to the positive domain to double the number of beat notes within the detector bandwidth. The technique enables coherent averaging over extended time-scales even for free-running combs, thus increasing the sensitivity of absorption and dispersion DCS measurements.
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204.发明授权公开(公告)号：US10775297B2
公开(公告)日：2020-09-15
申请号：US15446878
申请日：2017-03-01
Applicant: EcoTec Solutions, Inc.
Inventor： Laurent Jourdainne
IPC: G01N21/01 , G01N21/359 , G01J3/427 , G01N21/03 , G01M3/20 , G01N21/3504 , G01M3/22 , G01N21/39 , G01K13/00 , G01N21/31 , G01N33/00 , G01J3/42 , G01J3/433
Abstract: A system and method to discriminate between a first preselected gas and at least one other preselected gas use of an absorption spectroscopy analyzer that includes a Herriott cell and a temperature sensitive light source. The light source operates at a temperature that emits a beam at a wavelength that corresponds to high absorption by a first preselected gas. When a predetermined level of this gas is detected in a gas sample, the analyzer changes the operating temperature of the light source to emit a beam at a wavelength that corresponds to high absorption by a second preselected gas. The second preselected gas can be a different isotope of the first preselected gas.
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公开(公告)号：US20200182780A1
公开(公告)日：2020-06-11
申请号：US16215269
申请日：2018-12-10
Applicant: General Electric Company
Inventor： Ansas Matthias Kasten , William Albert Challener
IPC: G01N21/3504 , G01J3/30 , G01J3/06 , G01J3/427
Abstract: A gas analysis system includes a spectroscopy assembly coupled to a vehicle. The spectroscopy assembly includes a multiplexer configured to combine a plurality of light beams into a multiplexed light beam, wherein the multiplexer is configured to direct the multiplexed light beam toward a target surface. Additionally, the spectroscopy assembly includes a collection optic configured to receive a reflected multiplexed light beam from the target surface. Further, the spectroscopy assembly includes a controller configured to de-multiplex the multiplexed light beam into a plurality of reflected light beams and determine a spectral intensity of the plurality of reflected light beams.
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Patent Agency Ranking
公开(公告)号：US20200025677A1
公开(公告)日：2020-01-23
申请号：US16465824
申请日：2017-11-29
Applicant: Photothermal Spectroscopy Corp.
Inventor： Craig Prater , Kevin Kjoller , Roshan Shetty
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.
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207.发明授权公开(公告)号：US10408678B2
公开(公告)日：2019-09-10
申请号：US15569493
申请日：2016-04-20
Applicant: TOPCON CORPORATION
Inventor： Peng Zhao , Shugo Akiyama , Issei Hanya
Abstract: To provide a plant sensor device capable of obtaining a parameter to determine a growth status other than a spectroscopy vegetation index without increasing its configuration. The plant sensor device includes a light emission part for emitting a measurement light to irradiate a target plant, a light receiving part for receiving a reflected light from the target plant, and a control section for controlling the light emission part and light receiving part. The control section determines a spectroscopy vegetation index of the target plant by obtaining a reflection rate of the target plant based on the measurement light and reflected light. The control section calculates a distance from the target plant to the light emission part in accordance with the measurement light and reflected light, and determines a plant height of the target plant based on the distance.
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208.发明申请公开(公告)号：US20190200904A1
公开(公告)日：2019-07-04
申请号：US16312080
申请日：2018-05-22
Applicant: Rijul GUPTA
Inventor： Rijul GUPTA
CPC classification number: A61B5/1455 , A61B5/0059 , A61B5/0075 , A61B5/14532 , A61B5/14546 , A61B5/6826 , A61B5/7267 , A61B5/7475 , G01J3/00 , G01J3/0262 , G01J3/10 , G01J3/28 , G01J3/427 , G01J3/457 , G01J2003/102 , G01N21/31 , G01N21/474 , G01N21/49 , G01N2021/3155 , G01N2021/3181
Abstract: A multi-channel measurement device for measuring properties of human tissue, may comprise a microcontroller and first and second source/sensor complexes. The first source/sensor complex may include a first housing having a first measurement portion, a first light sensor coupled to the microcontroller and exposed to the first measurement portion, and a first plurality of light sources coupled to the microcontroller and exposed to the first measurement portion. The second source/sensor complex may include a second housing having a second measurement portion, a second light sensor coupled to the microcontroller and exposed to the second measurement portion, and a second plurality of light sources coupled to the microcontroller and exposed to the second measurement portion. The first and second source/sensor complexes are coupled to each other such that the first measurement portion is opposite the second measurement portion and human tissue may be placed between the the first and second measurement portions. The microprocessor is configured with instructions stored in non-volatile memory to individually activate each of the light sources of the first and second pluralities of light sources and to record light intensity detected by the first and second light sources while an individual light source is activated. Each combination of an individually activated light source and one of the first and second light sensors provides a distinct measurement channel for measuring the absorption spectra of human blood and tissue.
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公开(公告)号：US10330591B2
公开(公告)日：2019-06-25
申请号：US15102777
申请日：2014-11-26
Inventor： Kazuhiro Ochi , Tatsuya Takahashi
Abstract: This food-article analysis device is provided with a light-reception/detection unit that receives near-infrared light reflected off of at least one measurement region of a measurement target and/or near-infrared light that has passed through at least one measurement region of said measurement target and generates a signal corresponding to the intensity of the received light, a computation unit that computes sectional nutrition information containing information regarding the caloric content of at least one measurement region and/or information regarding the components thereof on the basis of the signal supplied by the light-reception/detection unit and generates a distribution image by combining a plurality of pieces of sectional nutrition information relating to a plurality of measurement regions with position information for said measurement regions, and a display unit that displays the distribution image supplied by the computation unit.
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公开(公告)号：US10197442B2
公开(公告)日：2019-02-05
申请号：US15578397
申请日：2016-06-01
Inventor： Khanh Q. Kieu
IPC: G01J3/45 , G01J3/10 , G01C19/72 , H01S3/067 , H01S3/11 , G01J3/427 , H01S3/10 , H01S3/16 , G01J3/42
Abstract: A method of interrogating an absorbing sample includes using a mode-locked laser mode-locked in both a clock-wise (CW) and a counter-clock wise (CCW) direction to generate first and second optical pulses having different repetition rates. One of the first and second optical pulses is directed in a CW direction and the other of the first and second optical pulses is directed in the CCW direction. The first optical pulses are transmitted through the absorbing sample to probe the absorbing sample while the second optical pulses are transmitted through the absorbing sample to act as a local oscillator. An interference pattern produced by interference between the first and second optical pulses is detected after traversing the absorbing sample.
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