公开(公告)号：US09983059B2

公开(公告)日：2018-05-29

申请号：US15502430

申请日：2015-07-13

Applicant: ARCHIMEJ TECHNOLOGY

Inventor： Mejdi Nciri ,  Eric Christian Belarbre ,  Henri Leung

IPC: G01J3/28 ,  G01J3/447 ,  G01J3/10 ,  G01J3/433

CPC classification number: G01J3/447 ,  G01J3/10 ,  G01J3/4338 ,  G01J2003/102

Abstract: Disclosed is a spectroscopy device, including an analysis zone for receiving a sample; at least one light-emitting diode arranged to emit a light beam towards the analysis zone, having a luminous intensity spectral profile in a working wavelength interval; unit for varying with time the luminous intensity spectral profile emitted by the diode in the working wavelength interval of the diode; a detector, arranged to receive, during a variation with time of the luminous intensity spectral profile emitted by the diode, the light beam emitted by the diode and having crossed the analysis zone, and supplying a detection signal of the light beam emitted by the diode and received by the detector, in the form of a signal which depends on at least one characteristic representative of the luminous intensity spectral profile of the light-emitting diode. Application to derivative spectroscopy.

公开(公告)号：US09952144B2

公开(公告)日：2018-04-24

申请号：US15046082

申请日：2016-02-17

Applicant: BATTELLE MEMORIAL INSTITUTE

Inventor： M. Lizabeth Alexander ,  James F. Kelly ,  Robert L. Sams ,  James J. Moran ,  Matthew K. Newburn ,  Thomas A. Blake

IPC: G01J3/30 ,  G01N21/3504 ,  G01N21/59 ,  G01J3/433 ,  G01N21/31 ,  G01N21/39 ,  G02B6/42 ,  G01N21/71 ,  G02B6/02 ,  G01N21/03 ,  G01N21/05 ,  G01N21/85

CPC classification number: G01N21/3504 ,  G01J3/4338 ,  G01N21/3103 ,  G01N21/39 ,  G01N21/59 ,  G01N21/718 ,  G01N2021/0346 ,  G01N2021/052 ,  G01N2021/3125 ,  G01N2021/399 ,  G01N2021/8578 ,  G01N2201/06113 ,  G02B6/02328 ,  G02B6/4296

Abstract: A capillary absorption spectrometer and process are described that provide highly sensitive and accurate stable absorption measurements of analytes in a sample gas that may include isotopologues of carbon and oxygen obtained from gas and biological samples. It further provides isotopic images of microbial communities that allow tracking of nutrients at the single cell level. It further targets naturally occurring variations in carbon and oxygen isotopes that avoids need for expensive isotopically labeled mixtures which allows study of samples taken from the field without modification. The process also permits sampling in vivo permitting real-time ambient studies of microbial communities.

公开(公告)号：US09939374B2

公开(公告)日：2018-04-10

申请号：US14390523

申请日：2013-04-04

Applicant: Dräger Medical GmbH

Inventor： Ralf Buchtal ,  Peter Dreyer ,  Livio Fornasiero

IPC: G01N21/3504 ,  G01J3/26 ,  G01J3/42 ,  G01J3/433

CPC classification number: G01N21/3504 ,  G01J3/26 ,  G01J3/42 ,  G01J3/433 ,  G01N2201/061 ,  G01N2201/0662 ,  G01N2201/068

Abstract: A device for recording an absorption spectrum of a fluid has a radiation source (1) that emits a radiation in a spectral range along a beam path (11), a measuring path (5), along which the radiation passes through the fluid and arranged in the beam path, a tunable Fabry-Perot interferometer (7), arranged in the beam path and transmitting radiation in the spectral range as a displaceable bandpass filter, and a detector (9, 35) measuring the intensity of the radiation in the spectral range. An etalon (3) is arranged for spectral modulation of radiation in the beam path and has a plurality of transmission maxima (17) in the spectral range. The bandpass filter, formed by the Fabry-Perot interferometer (7), is displaceable across the spectral range such that spectral modulation of the radiation by the etalon (3) is measured by the detector (9, 35) as a modulation of radiation intensity over time.

公开(公告)号：US20180052051A1

公开(公告)日：2018-02-22

申请号：US15692339

申请日：2017-08-31

Applicant: University of Virginia Patent Foundation

Inventor： Brooks Hart Pate ,  Justin L. Neill

IPC: G01J3/443 ,  G01N21/3586 ,  G01J3/28 ,  G01J3/433 ,  G01N21/35

CPC classification number: G01J3/443 ,  G01J3/2889 ,  G01J3/4338 ,  G01J3/453 ,  G01N21/35 ,  G01N21/3586 ,  G01N2021/3595

Abstract: An emission can be obtained from a sample in response to excitation using a specified range of excitation frequencies. Such excitation can include generating a specified chirped waveform and a specified downconversion local oscillator (LO) frequency using a digital-to-analog converter (DAC), upconverting the chirped waveform via mixing the chirped waveform with a specified upconversion LO frequency, frequency multiplying the upconverted chirped waveform to provide a chirped excitation signal for exciting the sample, receiving an emission from sample, the emission elicited at least in part by the chirped excitation signal, and downconverting the received emission via mixing the received emission with a signal based on the specified downconversion LO signal to provide a downconverted emission signal within the bandwidth of an analog-to-digital converter (ADC). The specified chirped waveform can include a first chirped waveform during a first duration, and a second chirped waveform during a second duration.

公开(公告)号：US09885614B2

公开(公告)日：2018-02-06

申请号：US14968237

申请日：2015-12-14

Applicant: BEIHANG UNIVERSITY

Inventor： Zheng Zheng ,  Xin Zhao ,  Lei Liu ,  Jiansheng Liu

IPC: G01J11/00 ,  G01J3/42 ,  G01J3/10 ,  G01J3/447 ,  G01J3/02 ,  G01J3/433 ,  G01J1/10 ,  G02F1/365 ,  H01S3/00 ,  G02F1/35 ,  G02F1/37 ,  H01S3/067 ,  H01S3/11 ,  H01S3/23 ,  H01S3/08

CPC classification number: G01J11/00 ,  G01J1/10 ,  G01J3/0224 ,  G01J3/0245 ,  G01J3/10 ,  G01J3/108 ,  G01J3/42 ,  G01J3/433 ,  G01J3/447 ,  G02F1/353 ,  G02F1/365 ,  G02F1/37 ,  G02F2203/13 ,  H01S3/0092 ,  H01S3/06791 ,  H01S3/0809 ,  H01S3/1106 ,  H01S3/1112 ,  H01S3/2391

Abstract: A method and a system for measuring an optical asynchronous sample signal. The system for measuring an optical asynchronous sampling signal comprises a pulsed optical source capable of emitting two optical pulse sequences with different repetition frequencies, a signal optical path, a reference optical path, and a detection device. Since the optical asynchronous sampling signal can be measured by merely using one pulsed optical source, the complexity and cost of the system are reduced. A multi-frequency optical comb system using the pulsed optical source and a method for implementing the multi-frequency optical comb are further disclosed.

公开(公告)号：US09869634B2

公开(公告)日：2018-01-16

申请号：US14837052

申请日：2015-08-27

Applicant: General Electric Company

Inventor： Samhitha Palanganda Poonacha ,  Sandip Maity ,  Nagapriya Kavoori Sethumadhavan

IPC: G01N21/25 ,  G01N21/39 ,  G01J3/433 ,  G01N21/3504 ,  G01N21/03 ,  G01N21/31

CPC classification number: G01N21/39 ,  G01J3/4338 ,  G01N21/031 ,  G01N21/314 ,  G01N21/3504 ,  G01N2021/399 ,  G01N2201/06113

Abstract: A method implemented on a processor includes emitting a light beam from a light source to a component in an absorption cell, wherein the light beam comprises a plurality of wavelength beams. The method further includes generating a plurality of response signals due to the presence of the component, corresponding to the plurality of wavelength beams of the light beam. The method also includes detecting the plurality of response signals by a photo detector coupled to the absorption cell. The method includes determining a concentration of the component based on the plurality of response signals.

公开(公告)号：US09816976B2

公开(公告)日：2017-11-14

申请号：US14860712

申请日：2015-09-22

Applicant: Mohamad Haidar Shahine

Inventor： Mohamad Haidar Shahine

IPC: G01N21/39 ,  G01N33/00 ,  G01J3/433 ,  G01N21/3504 ,  G01N21/17

CPC classification number: G01N33/004 ,  G01J3/433 ,  G01N21/3504 ,  G01N21/39 ,  G01N33/007 ,  G01N2021/1795 ,  G01N2201/12

Abstract: A system and method to accurately estimate the strength and changes of the monitoring signal for sensing applications, this invention involves the monitoring of signal strength and changes through the use of a pseudorandom binary sequence bit stream to modulate the transmitter of a data link, when beating the transmitter signal with absorption structure signal from the sensor at the receiver, the changes in the received signal strength are proportional to the sensing signal being monitored. The received signal bit pattern is monitored by an error detector scheme to report a Bit Error Rate level based on the changes in the sensing signal level as compared to the bit stream from the transmitter. This results in a very accurate robust monitoring technique with high consistency and repeatability.

公开(公告)号：US09804028B2

公开(公告)日：2017-10-31

申请号：US14616673

申请日：2015-02-07

Applicant: Spectral Sciences, Inc.

Inventor： Pajo Vukovic-Cvijin

IPC: H01S3/10 ,  G01J3/433 ,  G01J3/10 ,  H01S5/14 ,  H01S5/40 ,  G01J3/02 ,  G01J3/18 ,  H01S3/08 ,  H01S5/10 ,  H01S5/34 ,  H01S3/081 ,  H01S5/022 ,  G01J3/42

CPC classification number: G01J3/433 ,  G01J3/0229 ,  G01J3/10 ,  G01J3/18 ,  G01J2003/423 ,  H01S3/08009 ,  H01S3/0816 ,  H01S5/02248 ,  H01S5/1092 ,  H01S5/141 ,  H01S5/3402 ,  H01S5/4062 ,  H01S5/4087

Abstract: A tunable laser source that includes multiple gain elements and uses a spatial light modulator in an external cavity to produce spectrally tunable output is claimed. Several designs of the external cavity are described, targeting different performance characteristics and different manufacturing costs for the device. Compared to existing devices, the tunable laser source produces high output power, wide tuning range, fast tuning rate, and high spectral resolution.

公开(公告)号：US09778172B2

公开(公告)日：2017-10-03

申请号：US15385482

申请日：2016-12-20

Applicant: Halliburton Energy Services, Inc.

Inventor： Michael Pelletier ,  William Soltmann ,  David L. Perkins ,  Christopher M. Jones

IPC: G01N21/25 ,  H05B37/02 ,  G01J3/02 ,  G01J3/10 ,  G01J3/427 ,  G01J3/433 ,  G01J5/52 ,  G01N21/31

CPC classification number: G01N21/255 ,  E21B47/102 ,  E21B49/08 ,  G01J3/0205 ,  G01J3/027 ,  G01J3/10 ,  G01J3/108 ,  G01J3/427 ,  G01J3/433 ,  G01J5/522 ,  G01N21/31 ,  G01N21/47 ,  G01N2201/061 ,  G01N2201/06186 ,  G01N2201/0696 ,  G01N2201/12 ,  G01V8/10 ,  H03K7/08 ,  H05B37/0209

Abstract: A light source and a method for its use in an optical sensor are provided, the light source including a resistively heated element. The light source includes a power circuit configured to provide a pulse width modulated voltage to the resistively heated element, the pulse width modulated voltage including: a duty cycle with a first voltage; and a pulse period including a period with a second voltage, wherein: the duty cycle, the first voltage, and the pulse period are selected so that the resistively heated element is heated to a first temperature; and the first temperature is selected to emit black body radiation in a continuum spectral range. Also provided is an optical sensor for determining a chemical composition including a light source as above.

公开(公告)号：US20170248528A1

公开(公告)日：2017-08-31

申请号：US15507545

申请日：2015-08-28

Applicant: Aurora Solar Technologies (Canada) Inc.

Inventor： Stephen Warren BLAINE

IPC: G01N21/95 ,  H01L21/66 ,  G01J3/02 ,  G01N21/55 ,  G01J3/433

CPC classification number: G01N21/9501 ,  G01J3/0254 ,  G01J3/433 ,  G01N21/3563 ,  G01N21/55 ,  G01N21/9505 ,  G01N2021/3568 ,  G01N2201/06113 ,  G01N2201/062 ,  G01N2201/065 ,  H01L22/12 ,  H01L31/18

Abstract: A system and method of non-contact measurement of the dopant content of semiconductor material by reflecting infrared (IR) radiation off of the material into an integrating sphere to scatter the received radiation and passing portions of the radiation through band pass filters of differing wavelength ranges, comparing the level of energy passed through each filter and calculating the dopant content by referencing a correlation curve made up of known wafer dopant content for that system.