公开(公告)号：US11903699B2

公开(公告)日：2024-02-20

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

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 ,  G01N21/31 ,  G01N21/474 ,  G01N21/49 ,  G01J2003/102 ,  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 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.

公开(公告)号：US09846081B2

公开(公告)日：2017-12-19

申请号：US14775321

申请日：2014-03-10

Applicant: OSAKA UNIVERSITY

Inventor： Tsuyoshi Konishi ,  Takema Satoh ,  Tomotaka Nagashima

IPC: G01J3/28 ,  G01J3/457 ,  G01J3/18 ,  G01J3/02 ,  G02B6/12

CPC classification number: G01J3/457 ,  G01J3/0297 ,  G01J3/18 ,  G01J3/2803 ,  G01J2003/1861 ,  G01J2003/2866 ,  G02B6/12

Abstract: A light wavelength measurement method of measuring a wavelength of target light includes: receiving target light on a second dispersion device that disperses the target light into a plurality of second beams which reach a plurality of positions corresponding to the wavelength of the target light (S106, S202); and measuring the wavelength of the target light, by using the plurality of the second beams as a vernier scale for measuring the wavelength of the target light within a wavelength range specified by a main scale (S108, S204).

公开(公告)号：US09816861B2

公开(公告)日：2017-11-14

申请号：US14920260

申请日：2015-10-22

Applicant: Deutsches Elektronen-Synchrotron DESY

Inventor： Matthew Streeter ,  Jens Osterhoff

IPC: G01J3/00 ,  G01J3/457 ,  G01J11/00 ,  H01S3/00 ,  G01J3/02

CPC classification number: G01J3/457 ,  G01J3/0205 ,  G01J11/00 ,  H01S3/0014 ,  H01S3/005 ,  H01S3/0092

Abstract: The invention relates to a device (2) and to a method for characterizing an ultrashort laser pulse. Furthermore, the invention relates to use of a self-contained optical assembly in a device (2) for characterizing an ultrashort laser pulse. The device (2) comprises an imaging optical element (4) configured to image the incident laser pulse (6) in a direction of a straight line (L). A first optical element (10) is configured to apply predetermined varying group delay dispersion on the line focused laser pulse. A non-linear optical element (14) is configured to generate a second harmonic laser pulse (30). An optical grating (20) generates a diffraction of the second harmonic laser pulse, which is imaged on a flat sensor (24). A processing unit (36) determines a best fit for the captured image thereby calculating a frequency spectrum and a spectral phase of the laser pulse.

公开(公告)号：US09618392B2

公开(公告)日：2017-04-11

申请号：US14112608

申请日：2012-04-27

Applicant: Tobias Kippenberg ,  Ronald Holzwarth

Inventor： Tobias Kippenberg ,  Ronald Holzwarth

IPC: G01J3/45 ,  G01J3/42 ,  G01J3/453 ,  G01J3/457 ,  G02B6/12 ,  G02B6/293

CPC classification number: G01J3/45 ,  G01J3/42 ,  G01J3/4531 ,  G01J3/4532 ,  G01J3/457 ,  G02B6/12007 ,  G02B6/29338 ,  G02B6/29353

Abstract: A spectroscopy assembly having a first and a second optical ring resonator, each provided with a material having an intensity-dependent refraction index. The spectroscopy assembly further includes at least one waveguide, which is guided along the optical ring resonator at a distance such that the light of a continuous wave laser guided in the waveguide can be coupled into the optical ring resonator, and a frequency comb generated from the light of the continuous wave laser in the optical ring resonator can be coupled out of the waveguide. The optical ring resonators and the at least one waveguide are provided on a common substrate.

公开(公告)号：US20170059477A1

公开(公告)日：2017-03-02

申请号：US15227876

申请日：2016-08-03

Applicant: SpectraSensors, Inc.

Inventor： Alfred Feitisch ,  Xiang Liu ,  Kevin Ludlum ,  Mathias Schrempel

IPC: G01N21/27

CPC classification number: G01N21/274 ,  G01J3/0297 ,  G01J3/28 ,  G01J3/42 ,  G01J3/457 ,  G01J2003/423 ,  G01N21/39 ,  G01N2021/399

Abstract: Frequency registration deviations occurring during a scan of a frequency or wavelength range by a spectroscopic analysis system can be corrected using passive and/or active approaches. A passive approach can include determining and applying mathematical conversions to a recorded field spectrum. An active approach can include modifying one or more operating parameters of the spectroscopic analysis system to reduce frequency registration deviation.

Abstract translation: 通过光谱分析系统在频率或波长范围的扫描期间发生的频率对准偏差可以使用无源和/或主动方法进行校正。 被动方法可以包括确定并应用数学转换到记录的场谱。 主动方法可以包括修改光谱分析系统的一个或多个操作参数以减少频率对准偏差。

公开(公告)号：US20170059410A1

公开(公告)日：2017-03-02

申请号：US15246284

申请日：2016-08-24

Applicant: Fuji Jukogyo Kabushiki Kaisha ,  Kyushu Institute of Technology

Inventor： Takayuki NISHI ,  Shinya OHTSUKA

IPC: G01J3/443 ,  G01J3/457 ,  G01R31/12

CPC classification number: G01J3/443 ,  G01J3/28 ,  G01J3/2803 ,  G01J3/457 ,  G01J2003/1213 ,  G01J2003/2859 ,  G01R31/1218

Abstract: According to one implementation, an explosive spark estimation system includes an explosive spark estimation system includes a measuring system and a processing system. The measuring system is adapted to measure intensity of light, included in a spark occurred from an object to be tested. The light is within at least one specific wavelength band. The processing system is adapted to determine whether the spark is explosiveness based on the intensity of the light. Further, according to one implementation, an explosive spark estimation method includes: measuring intensity of light, included in a spark occurred from an object to be tested, within at least one specific wavelength band; and determining whether the spark is explosive, based on the intensity of the light.

Abstract translation: 根据一个实施方案，一种爆炸火花估计系统包括一个包括一个测量系统和一个处理系统的爆炸火花估计系统。 测量系统适用于测量被测物体发生火花所包含的光强度。 光在至少一个特定波长带内。 处理系统适于基于光的强度来确定火花是否是爆炸性的。 此外，根据一个实施方式，一种爆炸性火花估计方法包括：在至少一个特定波长带内测量包含在从待测物体发生的火花中的光的强度; 并基于光的强度来确定火花是否是爆炸性的。

公开(公告)号：US09157804B2

公开(公告)日：2015-10-13

申请号：US13145699

申请日：2010-01-21

Applicant: Robert G. Messerschmidt

Inventor： Robert G. Messerschmidt

IPC: G01J3/453 ,  G01J3/457 ,  G01N21/45 ,  G01N21/552 ,  G01N21/65

CPC classification number: G01J3/4531 ,  G01J3/457 ,  G01N21/45 ,  G01N21/552 ,  G01N21/65

Abstract: A correlation interferometric spectroscopy devices are described that detect the spectral characteristics of a sample wherein device consists of an electromagnetic radiation source for exciting a sample with photons; and a detector adapted to detect an arrival time of a photon at the detector and further adapted to detect a delay between the arrival time of different photons. The device may further consist of an autocorrelator adapted to analyze the between the arrival of photons at the detector. The device may also be used together with other spectral detection and characterizing systems, such as Raman spectroscopy and attenuated total reflectance spectroscopy. Also provided herein are methods, systems, and kits incorporating the correlation interferometric spectroscopy device.

Abstract translation: 描述了相关干涉光谱装置，其检测样品的光谱特性，其中装置由用于激发具有光子的样品的电磁辐射源组成; 以及检测器，其适于检测光子在检测器处的​​到达时间，并且还适于检测不同光子的到达时间之间的延迟。 该装置还可以包括适于分析在检测器处的​​光子到达之间的自相关器。 该装置还可以与其他光谱检测和表征系统一起使用，例如拉曼光谱和衰减全反射光谱。 本文还提供了结合相关干涉测量光谱装置的方法，系统和试剂盒。

公开(公告)号：US09048625B2

公开(公告)日：2015-06-02

申请号：US14445959

申请日：2014-07-29

Applicant: The Trustees of Columbia University in the City of New York

Inventor： Heng Zhou ,  Shu-Wei Huang ,  Chee Wei Wong

IPC: H01S3/098 ,  H01S3/11 ,  H01S3/08

CPC classification number: H01S3/1106 ,  G01J3/457 ,  G02F1/35 ,  G02F2203/56 ,  H01S3/08013

Abstract: Normal group velocity dispersion mode-locked optical frequency combs are provided on-chip. On-chip coherent frequency comb generation includes pulses showing temporal durations of about 74 fs. Pump detuning and bandpass filtering are provided for stabilizing and shaping the pulses from normal group velocity dispersion microresonators.

Abstract translation: 芯片上提供正常组速度色散锁模光频梳。 片上相干频率梳生成包括显示约74fs的时间持续时间的脉冲。 提供了泵失谐和带通滤波，用于稳定和整形来自正常组速度分散微谐振器的脉冲。

公开(公告)号：US20150030040A1

公开(公告)日：2015-01-29

申请号：US14445959

申请日：2014-07-29

Applicant: The Trustees of Columbia University in the City of New York

Inventor： Heng Zhou ,  Shu-Wei Huang ,  Chee Wei Wong

IPC: H01S3/11 ,  H01S3/08

CPC classification number: H01S3/1106 ,  G01J3/457 ,  G02F1/35 ,  G02F2203/56 ,  H01S3/08013

Abstract: Normal group velocity dispersion mode-locked optical frequency combs are provided on-chip. On-chip coherent frequency comb generation includes pulses showing temporal durations of about 74 fs. Pump detuning and bandpass filtering are provided for stabilizing and shaping the pulses from normal group velocity dispersion microresonators.

Abstract translation: 芯片上提供正常组速度色散锁模光频梳。 片上相干频率梳生成包括显示约74fs的时间持续时间的脉冲。 提供了泵失谐和带通滤波，用于稳定和整形来自正常组速度分散微谐振器的脉冲。

公开(公告)号：US08928880B2

公开(公告)日：2015-01-06

申请号：US13560220

申请日：2012-07-27

Applicant: Daniel Youngner ,  Yue Liu ,  Lisa Lust

Inventor： Daniel Youngner ,  Yue Liu ,  Lisa Lust

IPC: G01J3/04 ,  G01J3/28 ,  G01J3/457 ,  G01J3/02 ,  G01J3/18 ,  G01J3/14

CPC classification number: G01J3/0237 ,  G01J3/0208 ,  G01J3/0229 ,  G01J3/14 ,  G01J3/1804 ,  G01J3/2803 ,  G01J3/457

Abstract: An apparatus for detecting gas concentrations includes a coded filter to oscillate proximate a resonant frequency. A photo detector is positioned below the coded filter such that the coded filter selectively blocks light that is directed at the photo detector. Optics are positioned to project spectral information on to the coded filter. A processor analyzes a signal received from the photo detector. The processor is adapted to weight a harmonic attic signal.

Abstract translation: 用于检测气体浓度的装置包括在谐振频率附近振荡的编码滤波器。 光检测器位于编码滤波器的下方，使得编码滤波器选择性地阻挡指向光检测器的光。 定位光学器件将光谱信息投影到编码滤波器上。 处理器分析从光电检测器接收的信号。 处理器适用于加重谐波阁楼信号。