公开(公告)号：US20240288359A1

公开(公告)日：2024-08-29

申请号：US18543861

申请日：2023-12-18

Applicant: Chongqing University ,  State Grid Chongqing Electric power Research Institute ,  Shandong Taikai Transformer Co., Ltd. ,  Optosky (Xiamen) Optical Ltd

Inventor： Fu Wan ,  Weigen Chen ,  Zhiyi Luo ,  Yingkai Long ,  Pinyi Wang ,  Lin Du ,  Qiuxia Sun ,  Quan Zhou ,  Youyuan Wang ,  Hongfei Liu

IPC: G01N21/17 ,  G01N33/28 ,  G01R31/12

CPC classification number: G01N21/1702 ,  G01N33/2841 ,  G01R31/1218 ,  G01R31/1281 ,  G01N2021/1704 ,  G01N2201/06113

Abstract: The present disclosure relates to a simultaneous detection method and system for dissolved gas and partial discharge in insulating oil, and belongs to the field of electrical devices. The method includes the steps: freely diffusing the dissolved gas in the insulating oil to an F-P optical fiber interference cavity through an oil-gas separation membrane; coupling pump light and probe light into the F-P optical fiber interference cavity through a frequency division multiplexer; making, by an optoacoustic effect of the dissolved gas stimulated by the pump light and an ultrasonic wave generated by the partial discharge, the oil-gas separation membrane vibrate; detecting, by the probe light, vibration of the oil-gas separation membrane, which changes a cavity length, wherein when the probe light is reflected by the oil-gas separation membrane, an interference signal is generated due to the change of the cavity length.

公开(公告)号：US12053774B2

公开(公告)日：2024-08-06

申请号：US17185177

申请日：2021-02-25

Applicant: The General Hospital Corporation

Inventor： Robert Granier ,  Ramin Haghgooie ,  Ken Kotz ,  Anne C. Petrofsky ,  Ronald G. Tompkins

IPC: G01N1/00 ,  B01L3/00 ,  G01N15/01 ,  G01N15/10 ,  G01N15/12 ,  G01N15/14 ,  G01N15/1434 ,  G01N21/01 ,  G01N21/359 ,  G01N21/53 ,  G01N21/64 ,  G01N21/78 ,  G01N35/00

CPC classification number: B01L3/502715 ,  B01L3/50273 ,  B01L3/502738 ,  G01N15/1434 ,  G01N21/01 ,  G01N21/359 ,  G01N21/532 ,  G01N21/6486 ,  G01N21/78 ,  G01N35/00029 ,  G01N35/00871 ,  B01L2200/027 ,  B01L2200/028 ,  B01L2200/0689 ,  B01L2300/0627 ,  B01L2300/0816 ,  B01L2300/0832 ,  B01L2300/0861 ,  B01L2400/0487 ,  G01N15/01 ,  G01N2015/1006 ,  G01N15/12 ,  G01N15/1459 ,  G01N2021/6493 ,  G01N2035/00158 ,  G01N2035/00326 ,  G01N2035/00356 ,  G01N2035/00881 ,  G01N2201/024 ,  G01N2201/06113 ,  G01N2201/062

Abstract: A modular analytic system includes a base, at least one fluid sample processing module configured to be removably attached to the base, at least one fluid sample analysis module configured to be removably attached to the base, a fluid actuation module positioned on the base, a fluidic network comprising multiple fluidic channels, in which the fluid actuation module is arranged to control transport of a fluid sample between the at least one sample processing module and the at least one sample analysis module through the fluidic network, and an electronic processor, in which the electronic processor is configured to control operation of the fluid actuation module and receive measurement data from the at least one fluid sample analysis module.

公开(公告)号：US20240255430A1

公开(公告)日：2024-08-01

申请号：US18158140

申请日：2023-01-23

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Abdulaziz Abdulrahman AL-SAADI ,  Sathiyamoorthy MURUGESAN ,  Muhammad HAROON ,  Tawfik A. SALEH

IPC: G01N21/65 ,  B22F1/054 ,  B22F1/18

CPC classification number: G01N21/658 ,  B22F1/056 ,  B22F1/18 ,  B22F2301/255 ,  B22F2304/056 ,  B22F2304/058 ,  G01N2201/06113

Abstract: A surface-enhanced Raman scattering (SERS) substrate is provided. The SERS substrate includes a transparent substrate and a nanocomposite composition. The nanocomposite composition includes a silver-loaded silica (Ag—SiO2) nanocomposite having a silica core and a silver/silica shell disposed around the silica core and a zeolitic material having a nano porous structure. The silver/silica shell contains silver nanoparticles uniformly distributed therein. The Ag—SiO2 nanocomposite is uniformly disposed on a surface of the zeolitic material. The nanoparticles of the Ag—SiO2 nanocomposite are spherical and have a mean particle size of 100 to 500 nanometers (nm). A method of obtaining a Raman spectrum of a sulfur-containing compound in a mixing composition is also provided.

公开(公告)号：US12031908B2

公开(公告)日：2024-07-09

申请号：US17094901

申请日：2020-11-11

Applicant: Nirrin Technologies, Inc.

Inventor： Bryan A. Hassell ,  Walid A. Atia ,  David P. Marchessault

IPC: B01L3/00 ,  B01F23/00 ,  B01F23/41 ,  B01F101/23 ,  B23Q17/24 ,  C12M1/34 ,  C12Q1/18 ,  G01N21/3577 ,  G01N21/359 ,  G01N21/39 ,  G01N21/45 ,  G01N21/64 ,  G01N33/50 ,  G01N33/68

CPC classification number: G01N21/39 ,  C12M41/32 ,  G01N21/3577 ,  G01N21/359 ,  G01N21/45 ,  G01N33/6854 ,  G01N2201/06113

Abstract: A method for studying cell viability and protein aggregation involves establishing a Fabry Perot etalon signal within an optical spectroscopic feature, e.g., in the near infrared region. Protein aggregation and cell viability can be reflected by changes observed in the magnitude of the Fourier Transform peaks observed in the frequency or space domain associated with the contrast of the etalon. In short, the presence of viable cells and protein aggregates can degrade the etalon contrast of an etalon window. In some cases, the concentration of cells and monomeric protein can be measured as well.

公开(公告)号：US20240219295A1

公开(公告)日：2024-07-04

申请号：US18555438

申请日：2022-04-11

Applicant: NKT Photonics A/S

Inventor： Peter Moselund ,  Rasmus Engelsholm ,  Erik Nicolai Christensen

IPC: G01N21/17 ,  G02F1/365

CPC classification number: G01N21/1702 ,  G02F1/365 ,  G01N2021/1706 ,  G01N2201/06113 ,  G01N2201/088

Abstract: Disclosed is an optical system for monitoring a parameter, such as a density or a pressure, of a fluid, in particular a gas or a mixture of gases, in a hollow core of an optical fiber, wherein the optical system comprises: an optical fiber which comprises a hollow core that is filled with a fluid, a pulsed laser for providing pulsed laser light, which is input into a first end of the optical fiber such that the laser light propagates through the hollow core from the first end to a second end of the fiber, wherein the pulsed laser light is configured to induce nonlinear processes by interacting with the fluid in the hollow core, and wherein the optical system further comprises a monitoring device for detecting acoustic vibrations in the fiber and for determining a parameter of the fluid based on the acoustic vibrations.

公开(公告)号：US20240210320A1

公开(公告)日：2024-06-27

申请号：US17427540

申请日：2020-01-31

Applicant: APPLIKATE TECHNOLOGIES LLC

Inventor： Michael Levene ,  Richard Torres

IPC: G01N21/64 ,  G01N33/53 ,  G02B21/00 ,  G02B21/26

CPC classification number: G01N21/6458 ,  G01N21/6428 ,  G01N33/5308 ,  G02B21/0076 ,  G02B21/0084 ,  G02B21/26 ,  G01N2021/6439 ,  G01N2021/6463 ,  G01N2201/06113 ,  G01N2201/105

Abstract: The invention provides improved systems and methods for multiphoton microscopy including pixel clocking techniques for minimizing pixel integration time and providing consistent signal intensity with maximized imaging speeds. Various systems and method are described for optimizing laser repetition rate based on dye lifetime, combining polygonal mirror scanning and stage translation, using the laser pulse signal to time pixel collection, and minimizing laser pulses and dye usage based on signal to background ratios.

公开(公告)号：US20240210314A1

公开(公告)日：2024-06-27

申请号：US18554654

申请日：2022-04-20

Applicant: MONSTR Sense Technologies, LLC

Inventor： Eric W. Martin ,  Torben L. Purz ,  Steven T. Cundiff

IPC: G01N21/3563 ,  G01N21/95

CPC classification number: G01N21/3563 ,  G01N21/9501 ,  G01N2021/3568 ,  G01N2201/06113

Abstract: An electronic circuit includes signal processing electronics. The electronic circuit receives an electrical signal generated by a photodetector based on a light beam from a location on a material including a signal of interest and one or more modulation frequencies. The electronic circuit discriminates a portion of the electrical signal proportional to a characteristic of the signal of interest from other components of the electrical signal using a low pass filter with a transfer function including a notch at a notch frequency corresponding to one of the modulation frequencies. The electronic circuit determines a value for the characteristic of the signal of interest from the discriminated portion of the electrical signal. The signal processing electronics further outputs the value of the characteristic of the signal of interest.

公开(公告)号：US20240180428A1

公开(公告)日：2024-06-06

申请号：US18438144

申请日：2024-02-09

Applicant: OMNI MEDSCI, INC.

Inventor： Mohammed N. ISLAM

IPC: A61B5/00 ,  A61B5/145 ,  A61B5/1455 ,  A61C1/00 ,  A61C19/04 ,  G01J3/02 ,  G01J3/10 ,  G01J3/12 ,  G01J3/14 ,  G01J3/18 ,  G01J3/28 ,  G01J3/42 ,  G01J3/453 ,  G01M3/38 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3563 ,  G01N21/359 ,  G01N21/39 ,  G01N21/85 ,  G01N21/88 ,  G01N21/95 ,  G01N33/02 ,  G01N33/15 ,  G01N33/44 ,  G01N33/49 ,  G16H40/67 ,  G16Z99/00 ,  H01S3/00 ,  H01S3/067 ,  H01S3/30

CPC classification number: A61B5/0088 ,  A61B5/0013 ,  A61B5/0022 ,  A61B5/0075 ,  A61B5/0086 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1455 ,  A61B5/4547 ,  A61B5/6801 ,  A61B5/7203 ,  A61B5/7257 ,  A61B5/7405 ,  A61B5/742 ,  A61C19/04 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/108 ,  G01J3/14 ,  G01J3/28 ,  G01J3/2823 ,  G01J3/42 ,  G01J3/453 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3563 ,  G01N21/359 ,  G01N21/39 ,  G01N21/88 ,  G01N33/02 ,  G01N33/025 ,  G01N33/15 ,  G01N33/442 ,  G01N33/49 ,  G16H40/67 ,  G16Z99/00 ,  A61B5/0024 ,  A61B2562/0233 ,  A61B2562/0238 ,  A61B2562/146 ,  A61B2576/02 ,  A61C1/0046 ,  G01J2003/104 ,  G01J2003/1208 ,  G01J3/1838 ,  G01J2003/2826 ,  G01M3/38 ,  G01N2021/3513 ,  G01N2021/3595 ,  G01N2021/399 ,  G01N21/85 ,  G01N21/9508 ,  G01N2201/061 ,  G01N2201/06113 ,  G01N2201/062 ,  G01N2201/08 ,  G01N2201/12 ,  G01N2201/129 ,  H01S3/0092 ,  H01S3/06758 ,  H01S3/302 ,  Y02A90/10

Abstract: An optical system comprises a wearable device for measuring one or more physiological parameters. The physiological parameters may change in response to stretching of the hand or movement of fingers or thumb of the user, or the parameters may be related to blood constituents or blood flow. The wearable device comprises a light source with a plurality of semiconductor diodes and a detection system that measures reflected light from tissue comprising skin. The semiconductor diodes may be light emitting diodes or laser diodes. The signal to noise ratio for the output signal may be improved by synchronizing the detection system to the light source, increasing light intensity of at least one of the plurality of semiconductor diodes from an initial light intensity, and using change detection that compares light on versus light off for the detection system output. The wearable device is also configured to identify an object.

公开(公告)号：US12000781B2

公开(公告)日：2024-06-04

申请号：US16981795

申请日：2019-03-19

Applicant: IRIDESENSE

Inventor： Scott Buchter

IPC: G01N21/55 ,  B60W30/095 ,  B60W60/00 ,  G01S7/481 ,  G01S17/08 ,  G01S17/86 ,  G01S17/894 ,  G06T17/00 ,  G06T19/20 ,  G06V20/58

CPC classification number: G01N21/55 ,  B60W30/0956 ,  B60W60/001 ,  G01S7/4814 ,  G01S7/4816 ,  G01S7/4817 ,  G01S17/08 ,  G01S17/894 ,  G06T17/00 ,  G06T19/20 ,  G06V20/58 ,  B60W2420/408 ,  B60W2420/54 ,  G01N2201/06113 ,  G01S17/86 ,  G06T2210/56 ,  G06T2219/2004 ,  G06V2201/07

Abstract: A scanning device for laser detection and ranging (LiDAR), the scanning device includes, arranged in optical free space:



an optical input for receiving a pulsed broadband laser beam having a linear polarization;
a separating unit configured for transmitting the laser beam along a scanning optical path while changing the polarization into a circular one;
a wavelength selection unit; and
a scanning unit.




The separating unit is configured for deviating the reflections (4) on a broadband detector while changing the orthogonal circular polarization into an orthogonal linear polarization compared to the linear polarization of the laser beam. The broadband detector is configured to receive the deviated reflections, and to detect a time-of-flight and an optical power of the light reflection.

公开(公告)号：US11994473B2

公开(公告)日：2024-05-28

申请号：US17935563

申请日：2022-09-26

Applicant: Purdue Research Foundation

Inventor： Chi Zhang ,  Matthew Graham Clark

IPC: G01J3/44 ,  G01N21/21 ,  G01N21/65 ,  G01N33/483 ,  G02B21/00

CPC classification number: G01N21/65 ,  G01N21/21 ,  G01N33/4833 ,  G02B21/0032 ,  G02B21/0048 ,  G01N2021/653 ,  G01N2201/06113

Abstract: Embodiments of the present disclosure are disclosed for enhancing resolution for nonlinear optical microscopy. Embodiments include pulse picking using a modulator, such as an acousto-optic modulator, that is optionally controlled by a function generator or a frequency divider. Some embodiments spatially overlap two laser beams prior to the modulator, and still additional embodiments include separating the 1st diffraction order of the modulated laser output of the acousto-optic modulator and directing the 1st diffraction order to a microscope. Some embodiments chirp a spatially overlapped laser beam with one pulse rate to a spatially overlapped laser beam with a higher pulse rate, while still additional embodiments utilize a coherent Raman scattering microscope.