公开(公告)号：US20230160819A1

公开(公告)日：2023-05-25

申请号：US17995649

申请日：2021-04-01

Applicant: SMART LASER & PLASMA SYSTEMS CO.

Inventor： Yoshihiro Deguchi ,  Takahiro Kamimoto

IPC: G01N21/39 ,  G01N33/00

CPC classification number: G01N21/39 ,  G01N33/0027 ,  G01N2201/06113

Abstract: This gas analysis device comprises: a laser light source which irradiates a gas to be measured with laser light; a laser control means which controls the laser light source so that the wavelength of the laser light is changed in each prescribed wavelength band; a light detection means which photoelectrically converts the laser light that have passed through the gas to be measured and outputs an electrical signal; and an interpretation means which analyzes, on the basis of the electrical signal, an absorption wavelength of the gas to be measured. In the gas analysis device, the laser control means controls the laser light source so that the intensity of the laser light changes into a shape (for example, a rectangular shape or a trapezoidal shape) having at least a substantially constant flat part in a prescribed time period, and the wavelength of the laser light changes in the time period.

公开(公告)号：US11644418B2

公开(公告)日：2023-05-09

申请号：US17409122

申请日：2021-08-23

Applicant: Hitachi High-Tech Corporation

Inventor： Kei Shimura ,  Mizuki Mohara ,  Kenji Aiko

IPC: G01N21/3581

CPC classification number: G01N21/3581 ,  G01N2201/064 ,  G01N2201/0633 ,  G01N2201/0636 ,  G01N2201/0638 ,  G01N2201/06113

Abstract: The present invention provides a far-infrared light source capable of reducing the shift in the location irradiated with far-infrared light even when the frequency of the far-infrared light changes. A far-infrared light source according to the present invention is configured so that the variation in the emission angle of far-infrared light in a nonlinear optical crystal when the frequency of the far-infrared light changes is substantially offset by the variation in the refractive angle of the far-infrared light at the interface between the nonlinear optical crystal and a prism when the frequency of the far-infrared light changes (see FIG. 8).

公开(公告)号：US11644415B2

公开(公告)日：2023-05-09

申请号：US17177672

申请日：2021-02-17

Applicant: Chongqing Institute of East China Normal University ,  ROI Optoelectronics Technology CO, LTD. ,  East China Normal University ,  University of Shanghai for Science and Technology

Inventor： Heping Zeng ,  Kangwen Yang ,  Hai Li

IPC: G01N21/31 ,  G01J5/58 ,  G01N33/00

CPC classification number: G01N21/31 ,  G01J5/58 ,  G01N33/0027 ,  G01N2201/06113

Abstract: Provided is a system for measuring gas temperature and component concentrations in a combustion field based on optical comb. The system includes two pulse laser devices, two continuous laser devices, a beam splitting device, a measurement path, an interference signal detecting device, an optical processing and electrical processing device and a signal acquisition and analysis device. The measurement path refers to the combustion field to be measured. The interference signal detecting device outputs an interference signal. The optical processing and electrical processing device includes several optic elements and electrical elements, and outputs an adaptive compensation signal and an asynchronous sampling clock signal after a series of processing on output of the two pulse laser devices and two continuous laser devices. The signal acquisition and analysis device outputs the measurement result based on the adaptive compensation signal, the asynchronous sampling clock signal and a stable interference signal.

公开(公告)号：US20190195688A1

公开(公告)日：2019-06-27

申请号：US16229355

申请日：2018-12-21

Applicant: Amir H. Atabaki ,  Rajeev J. RAM ,  William F. Herrington

Inventor： Amir H. Atabaki ,  Rajeev J. RAM ,  William F. Herrington

IPC: G01J3/02 ,  G01J3/10 ,  G01J3/28 ,  G01J3/44 ,  G01N21/65 ,  G01J3/18

CPC classification number: G01J3/0229 ,  G01J3/10 ,  G01J3/18 ,  G01J3/2803 ,  G01J3/44 ,  G01N21/65 ,  G01N2201/06113 ,  G01N2201/0635 ,  G01N2201/0638

Abstract: In swept source Raman (SSR) spectroscopy, a swept laser beam illuminates a sample, which inelastically scatters some of the incident light. This inelastically scattered light is shifted in wavelength by an amount called the Raman shift. The Raman-shifted light can be measured with a fixed spectrally selective filter and a detector. The Raman spectrum can be obtained by sweeping the wavelength of the excitation source and, therefore, the Raman shift. The resolution of the Raman spectrum is determined by the filter bandwidth and the frequency resolution of the swept source. An SSR spectrometer can be smaller, more sensitive, and less expensive than a conventional Raman spectrometer because it uses a tunable laser and a fixed filter instead of free-space propagation for spectral separation. Its sensitivity depends on the size of the collection optics. And it can use a nonlinearly swept laser beam thanks to a wavemeter that measures the beam's absolute wavelength during Raman spectrum acquisition.

公开(公告)号：US20190183346A1

公开(公告)日：2019-06-20

申请号：US16284514

申请日：2019-02-25

Applicant: OMNI MEDSCI, INC.

Inventor： Mohammed N. ISLAM

IPC: A61B5/00 ,  G16H40/67 ,  G01N33/15 ,  G01J3/10 ,  G01J3/28 ,  G01J3/42 ,  G01J3/453 ,  A61B5/145 ,  A61B5/1455 ,  G01N21/35 ,  G01N21/3563 ,  G01N21/359 ,  G01N21/39 ,  G01N21/88 ,  G01N33/02 ,  G01J3/02 ,  A61C19/04 ,  G01J3/14 ,  G01N33/49 ,  G01N33/44

CPC classification number: A61B5/0088 ,  A61B5/0013 ,  A61B5/0022 ,  A61B5/0024 ,  A61B5/0075 ,  A61B5/0086 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1455 ,  A61B5/4547 ,  A61B5/6801 ,  A61B5/7203 ,  A61B5/7257 ,  A61B5/7405 ,  A61B5/742 ,  A61B2562/0233 ,  A61B2562/0238 ,  A61B2562/146 ,  A61B2576/02 ,  A61C1/0046 ,  A61C19/04 ,  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 smart phone or tablet includes laser diodes, at least some of which may be pulsed and generate near-infrared light and include Bragg reflectors to direct light to tissue/skin. An array of laser diodes generates near-infrared light and has an assembly in front of the array that forms the light into a plurality of spots on the tissue/skin. A receiver includes detectors that receive light reflected from the tissue/skin. An infrared camera receives light reflected from the tissue/skin and generates data based on the received light. The smart phone or tablet is configured to generate a two-dimensional or three-dimensional image using at least part of the data from the infrared camera.

公开(公告)号：US20190056378A1

公开(公告)日：2019-02-21

申请号：US15678578

申请日：2017-08-16

Applicant: Thermo Finnigan LLC

Inventor： Steven L. REEBER ,  John GLAZIER

IPC: G01N33/49 ,  G01N15/06 ,  G01N21/47

CPC classification number: G01N33/49 ,  G01N15/0606 ,  G01N21/314 ,  G01N21/4738 ,  G01N21/8483 ,  G01N33/523 ,  G01N33/80 ,  G01N2015/0073 ,  G01N2015/0693 ,  G01N2021/3148 ,  G01N2021/4754 ,  G01N2021/4769 ,  G01N2201/06113 ,  G01N2201/062

Abstract: A system for measuring hematocrit in a whole blood sample is provided. An absorbent substrate is adapted to receive a whole blood sample. At least one light source is positioned to illuminate the sample on the substrate at first and second wavelengths. The first and second wavelengths are different from each other. A spectral sensor is positioned to measure a first intensity and a second intensity of light diffusely reflected from the sample at the first and second wavelengths, respectively. The diffusely reflected first and second intensities of light are compared to reference values to generate first and second reflectance values. A controller, coupled to the spectral sensor, is configured to determine a first differential reflectance between the first and second reflectances. The hematocrit level of the sample is determined based on a first stored relationship between hematocrit and a differential reflectance corresponding to the first and second wavelengths.

公开(公告)号：US20180372647A1

公开(公告)日：2018-12-27

申请号：US16064381

申请日：2016-12-19

Applicant: The Regents of the University of California

Inventor： Matthew Brenner ,  Andrew Emon Heidari ,  Zhongping Chen ,  Sari Mahon ,  Joseph Jing

IPC: G01N21/87 ,  G01N21/47 ,  G01N21/88 ,  G01B9/02

CPC classification number: G01N21/87 ,  G01B9/02091 ,  G01N21/4795 ,  G01N21/8806 ,  G01N2021/1787 ,  G01N2021/8809 ,  G01N2201/025 ,  G01N2201/06113

Abstract: The invention includes an improvement in a method of assessing a gemstone having at least one planar face with an internally reflecting surface including the steps of optically modifying the at least one planar face of the gemstone to return a sample beam from an internally reflecting plane corresponding to the at least one planar face to an optical coherence tomography (OCT) system; selectively directing the sample beam from an optical coherence tomography (OCT) system onto the gemstone; and generating an OCT image map of the gemstone to determine volume, gem carat weight and/or quality.

公开(公告)号：US20180340829A1

公开(公告)日：2018-11-29

申请号：US15986445

申请日：2018-05-22

Applicant: CENTRE NATIONAL D'ETUDES SPATIALES ,  Office National d'Etudes et de Recherches Aérospatiales

Inventor： Philippe HÉBERT ,  François LEMAÎTRE ,  Xavier ORLIK ,  Thibault DARTIGALONGUE

IPC: G01J3/427 ,  G01N21/31

CPC classification number: G01J3/427 ,  G01N21/3151 ,  G01N21/39 ,  G01N2021/1793 ,  G01N2021/1795 ,  G01N2201/06113 ,  G01S7/4802 ,  G01S17/95

Abstract: Disclosed is a remote spectroscopy device of the LIDAR type including a module for generating an emission signal, an emission module for sending the emission signal toward a targeted material, a receiving module for receiving a response signal and a module for postprocessing of the response signal to determine a composition of the targeted material. The generating module includes at least two laser sources, each laser source being able to generate a laser signal at a predetermined wavelength, an upstream mixer able to mix the laser signals generated by the different laser sources, and a first modulator able to modulate the composite signal at a first modulation frequency to form the emission signal.

公开(公告)号：US20180328850A1

公开(公告)日：2018-11-15

申请号：US16028159

申请日：2018-07-05

Applicant: Quantum-Si Incorporated

Inventor： Jonathan M. Rothberg ,  Ali Kabiri ,  Jason W. Sickler ,  Brett J. Gyarfas ,  Jeremy Lackey ,  Gerard Schmid ,  Benjamin Cipriany ,  Jack Jewell ,  Lawrence C. West ,  Michael Ferrigno ,  Paul E. Glenn ,  Anthony Bellofiore

IPC: G01N21/64 ,  B01L3/00 ,  C12Q1/6869 ,  C12Q1/6874 ,  G01N21/77

CPC classification number: G01N21/6486 ,  B01L3/5085 ,  B01L2200/12 ,  B01L2300/0829 ,  B01L2300/0887 ,  B01L2300/0893 ,  B01L2300/168 ,  C12Q1/6869 ,  C12Q1/6874 ,  C12Q2521/101 ,  C12Q2537/157 ,  C12Q2563/107 ,  C12Q2565/607 ,  G01N21/64 ,  G01N21/645 ,  G01N21/6452 ,  G01N21/648 ,  G01N21/7743 ,  G01N21/7746 ,  G01N2021/6419 ,  G01N2021/6441 ,  G01N2021/6478 ,  G01N2201/02 ,  G01N2201/06113 ,  G01N2201/0612 ,  G01N2201/062 ,  G01N2201/068 ,  G01N2201/125 ,  Y10T29/49016 ,  C12Q2525/101

Abstract: Apparatus and methods for analyzing single molecule and performing nucleic acid sequencing. An integrated device includes multiple pixels with sample wells configured to receive a sample, which, when excited, emits radiation; at least one element for directing the emission radiation in a particular direction; and a light path along which the emission radiation travels from the sample well toward a sensor. The apparatus also includes an instrument that interfaces with the integrated device. Each sensor may detect emission radiation from a sample in a respective sample well. The instrument includes an excitation light source for exciting the sample in each sample well.

公开(公告)号：US20180321149A1

公开(公告)日：2018-11-08

申请号：US15769070

申请日：2016-10-20

Applicant: Jacob SCHNEIDERMAN ,  Moshik COHEN

Inventor： Jacob SCHNEIDERMAN ,  Moshik COHEN

IPC: G01N21/552 ,  A61B5/00 ,  A61N5/06

CPC classification number: G01N21/554 ,  A61B5/0066 ,  A61B5/0084 ,  A61B5/441 ,  A61N5/0601 ,  A61N5/062 ,  A61N5/0625 ,  A61N2005/0632 ,  A61N2005/0659 ,  A61N2005/0662 ,  A61N2005/0663 ,  A61N2005/067 ,  B82Y30/00 ,  G01N21/49 ,  G01N2201/06113 ,  G02B5/008

Abstract: A system for identifying and optionally treating biological material is provided. The system includes a coherent light source for irradiating the biological material and device for collecting light waves reflected from the biological material and transforming the light waves to nanoplasmonic waves. The system also includes a processing module for extracting phase and amplitude information from the nanoplasmonic waves to identify the biological material based on the phase and amplitude information.