公开(公告)号：US20240175815A1

公开(公告)日：2024-05-30

申请号：US18511664

申请日：2023-11-16

Applicant: University of Science and Technology of China ,  Hefei National Laboratory

Inventor： Shuiming Hu ,  Cunfeng Cheng

IPC: G01N21/63 ,  G01J3/427 ,  G01N21/03 ,  G01N21/31 ,  G01N21/39

CPC classification number: G01N21/636 ,  G01J3/427 ,  G01N21/0332 ,  G01N21/3151 ,  G01N21/39 ,  G01N2021/391 ,  G01N2021/637

Abstract: An apparatus for quantitatively detecting isotopologue of carbon dioxide using dual-photon absorption, comprising a laser source, a laser frequency stabilizer, a sample chamber, a signal detector, and a signal analyzer. The sample chamber comprises an optical resonator and a piezoelectric ceramic. The laser source is configured to output a laser beam. The laser frequency stabilizer is configured to lock the laser beam to a mode frequency of the optical resonator. The piezoelectric ceramic is configured to adjust a length of the optical resonator to alter the mode frequency of the optical resonator to match energy levels of a target molecular isotopologue. The signal detector is configured to detect a transmission intensity of the light beam passing the optical resonator to obtain a dual-photon absorption signal. The signal analyzer is configured to analyze and process the dual-photon absorption signal to obtain a concentration of the target molecular isotopologue.

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：US20170274170A1

公开(公告)日：2017-09-28

申请号：US15592698

申请日：2017-05-11

Applicant: General Electric Company

Inventor： Heikki Haveri ,  Timo Merilainen

IPC: A61M16/08 ,  A61M16/00 ,  G01J5/02 ,  G01J5/10 ,  G01N21/27 ,  G01N21/31 ,  G01N21/3504 ,  G01N33/497 ,  A61M16/01 ,  A61M16/04 ,  G01N21/85

CPC classification number: A61M16/085 ,  A61M16/01 ,  A61M16/021 ,  A61M16/04 ,  A61M16/0833 ,  A61M2205/3313 ,  A61M2205/3368 ,  A61M2230/432 ,  A61M2230/435 ,  A61M2230/437 ,  G01J3/0286 ,  G01J3/28 ,  G01J3/42 ,  G01J3/427 ,  G01J5/027 ,  G01J5/10 ,  G01J5/20 ,  G01J2005/106 ,  G01N21/274 ,  G01N21/314 ,  G01N21/3504 ,  G01N33/497 ,  G01N2021/8578

Abstract: A method for determining a chance to enable a zeroing of gas analysis is disclosed herein. The method includes emitting radiation, and receiving emitted radiation, the received radiation comprising a first wavelength range absorbed by the at least one desired gas component and one or more disturbing factor, and a second wavelength range absorbed by the disturbing factor, the first wavelength range differing from the second wavelength range. The method also includes providing to a processing unit a first signal data indicative of a concentration of the at least one desired gas component and absorption of the disturbing factor, and a second signal data indicative of absorption of the disturbing factor. The method also includes determining a stability of the first and second signal data as a function of time, and if they are substantially stable enabling the zeroing to improve a measurement accuracy.

公开(公告)号：US20170261427A1

公开(公告)日：2017-09-14

申请号：US15068824

申请日：2016-03-14

Applicant: ANALOG DEVICES, INC.

Inventor： Shrenik Deliwala

IPC: G01N21/3577 ,  G01N33/18

CPC classification number: G01N21/3577 ,  G01J3/0256 ,  G01J3/0262 ,  G01J3/0264 ,  G01J3/10 ,  G01J3/36 ,  G01J3/427 ,  G01J2003/1213 ,  G01N33/18 ,  G01N2201/0627

Abstract: Techniques for optical detection of target chemicals on/in samples are disclosed. Light of at least two different wavelengths, or different bands of wavelengths, interacts with a target chemical, and at least some of the light that has interacted with the target chemical is incident on at least two photodetectors. Each of the photodetectors is configured to detect light of a different wavelength, or a different band of wavelengths, that has interacted with the target chemical. A processing logic is configured to compute a ratio between a parameter indicative of the intensity of light detected by one photodetector and a parameter indicative of the intensity of light detected by the other photodetector, and to determine the presence and/or the amount of the target chemical based on the computed ratio. In this manner, a simple, compact, and non-contact optical measurement assembly for assessing chemical content using differential spectral measurements may be provided.

公开(公告)号：US20170205285A1

公开(公告)日：2017-07-20

申请号：US15000488

申请日：2016-01-19

Applicant: Xerox Corporation

Inventor： David C. Craig ,  Robert P. Herloski ,  David A. Mantell ,  Douglas E. Proctor ,  Jonathan B. Hunter ,  Stuart Schweid

IPC: G01J3/02 ,  G01J3/10 ,  G01J3/28 ,  G01J3/427

CPC classification number: G01J3/0297 ,  G01J3/027 ,  G01J3/10 ,  G01J3/28 ,  G01J3/2803 ,  G01J3/427 ,  G01J3/513 ,  G01J3/524 ,  G01J2003/2806

Abstract: A method of spatially and spectrally calibrating a spectrophotometer including: a) emitting a white light illumination output from a full width illumination source; b) illuminating a test patch with the white light illumination output; c) reflecting a portion of the white light illumination output from the test patch to form a white light reflected illumination output; d) receiving the white light reflected illumination output at first, second and third rows of photosensitive elements to form a first calibration data set; e) emitting a cyan light illumination output from the full width illumination source; f) illuminating the test patch with the cyan light illumination output; g) reflecting a portion of the cyan light illumination output from the test patch to form a cyan light reflected illumination output; and, h) receiving the cyan light reflected illumination output at the second and third rows of photosensitive elements to form a second calibration data set.

公开(公告)号：US20170052069A1

公开(公告)日：2017-02-23

申请号：US15307344

申请日：2015-04-28

Applicant: HUMEDICS GMBH

Inventor： Tom RUBIN ,  Karsten HEYNE

IPC: G01J5/00 ,  G01J5/10 ,  G01N21/3504

CPC classification number: G01J5/0014 ,  G01J3/427 ,  G01J5/10 ,  G01J5/60 ,  G01N21/3504 ,  G01N2201/06113 ,  G01N2201/12

Abstract: A method for determining the temperature of an infrared-active gas by means of infrared spectroscopy is provided. The method comprising: radiating infrared light in a spectral range of 700 cm−1 to 5000 cm−1 originating from an infrared light source onto the gas; obtaining a first absorption-related parameter originating from measuring a first infrared absorption band of the gas, wherein the first infrared absorption band is a hot band being caused by thermal population of at least one vibrational mode of the gas; obtaining a second absorption-related parameter originating from measuring a second infrared absorption band of the gas, and calculating a ratio between the first absorption-related parameter and the second absorption-related parameter. The method is characterized in that the ratio is used to determine the temperature of the gas, wherein the ratio has a relative change of at least 0.5% per Kelvin temperature difference of the gas.

Abstract translation: 提供了通过红外光谱测定红外线活性气体的温度的方法。 该方法包括：将来自红外光源的700cm -1至5000cm -1的光谱范围的红外光辐射到气体上; 获得源自测量所述气体的第一红外吸收带的第一吸收相关参数，其中所述第一红外吸收带是由所述气体的至少一个振动模式的热群引起的热带; 获得源自测量气体的第二红外吸收带的第二吸收相关参数，以及计算第一吸收相关参数和第二吸收相关参数之间的比率。 该方法的特征在于，该比率用于确定气体的温度，其中该比率具有至少0.5％的每个开尔文温度差的气体的相对变化。

公开(公告)号：US20160265974A1

公开(公告)日：2016-09-15

申请号：US14641912

申请日：2015-03-09

Applicant: Corning Incorporated

Inventor： John Phillip Ertel ,  Jeffrey Stapleton King

IPC: G01J3/427 ,  G01J3/18 ,  G01J3/26

CPC classification number: G01J3/427 ,  G01J3/0205 ,  G01J3/0237 ,  G01J3/0256 ,  G01J3/0259 ,  G01J3/0264 ,  G01J3/0272 ,  G01J3/0291 ,  G01J3/18 ,  G01J3/1895 ,  G01J3/26 ,  G01N21/31 ,  G01N21/43 ,  G01N21/552 ,  G01N21/648 ,  G01N2201/0221 ,  G01N2201/024

Abstract: A spectrophotometer optics system is provided. The spectrophotometer optics system includes an optical sensing array and an optical waveguide including an input side and an output side. The input side of the optical waveguide receives input light and the optical sensing array is located at the output side of optical waveguide. The optical waveguide is configured to carry light to be analyzed by total internal reflection to the output side of the optical waveguide and to direct the light to be analyzed toward the optical sensing array. The spectrophotometer optics system includes an optical dispersive element configured to separate the light to be analyzed into separate wavelength components, and the optical dispersive element is supported by the optical waveguide.

Abstract translation: 提供分光光度计光学系统。 分光光度计光学系统包括光学感测阵列和包括输入侧和输出侧的光波导。 光波导的输入侧接收输入光，光感测阵列位于光波导的输出侧。 光波导被配置为将通过全内反射分析的光携带到光波导的输出侧，并将待分析的光引导到光学感测阵列。 分光光度计光学系统包括被配置为将要分析的光分离成分离的波长分量的光学色散元件，并且光学色散元件由光波导支撑。

公开(公告)号：US20160138972A1

公开(公告)日：2016-05-19

申请号：US15002631

申请日：2016-01-21

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hirofumi Tsuchimoto ,  Toru Shimuta

IPC: G01J1/44 ,  A61B5/00 ,  A61B5/024

CPC classification number: G01J1/44 ,  A61B5/02433 ,  A61B5/14552 ,  A61B5/6826 ,  A61B5/6829 ,  A61B5/7203 ,  G01J3/427 ,  G01J2001/444 ,  G01N21/256 ,  G01N21/3151

Abstract: An optical sensor device includes a light emitter for emitting, to a living body, lights having two wavelengths and blinking at a predetermined frequency, and a light receiver for receiving the lights from the living body. The light receiver outputs first and second detection signals corresponding to the respective wavelengths. A filter circuit extracts, from the first and second detection signals, modulation signals that are obtained with amplitude modulation of signals of the predetermined frequency. The modulation signals are amplified by a post-amplifier and are taken into an arithmetic processing unit after being converted to digital signals by an AD converter. The arithmetic processing unit calculates DC components and AC components of the first and second detection signals by employing the modulation signals converted the digital signals.

Abstract translation: 光传感器装置包括：发光体，用于向生物体发射具有两个波长并以预定频率闪烁的光;以及光接收器，用于从生物体接收光。 光接收器输出对应于各个波长的第一和第二检测信号。 滤波器电路从第一和第二检测信号中提取通过预定频率的信号的幅度调制获得的调制信号。 调制信号由后置放大器放大，并通过AD转换器转换成数字信号后被送入运算处理单元。 算术处理单元通过采用转换数字信号的调制信号来计算第一和第二检测信号的直流分量和交流分量。

公开(公告)号：US09151672B2

公开(公告)日：2015-10-06

申请号：US14085840

申请日：2013-11-21

Applicant: AGILENT TECHNOLOGIES, INC.

Inventor： Michael Bolles ,  Michael Ron Hammer

IPC: G01J3/28 ,  G01J3/427

CPC classification number: G01J3/427 ,  G01J3/021 ,  G01J3/0237 ,  G01J3/10 ,  G01J3/12 ,  G01J3/36 ,  G01J3/42 ,  G01J2003/1876

Abstract: An optical absorption spectrometry system includes first and second light sources, a dichroic beam combiner and a wavelength selective module. The first light source emits first light having first wavelengths within a first wavelength range, and the second light source emits second light having second wavelengths within a second wavelength range different from the first wavelength range. The dichroic beam combiner includes a predetermined first reflectance/transmission transition region, the dichroic beam combiner being configured to transmit a first portion of the first light and to reflect a second portion of the second light to provide combined light. The wavelength selective module is configured to disperse the combined light received at an entrance aperture, to select a sample wavelength range of the dispersed light as sample light, and to output the sample light having the selected sample wavelength range from an exit aperture for illuminating a sample.

Abstract translation: 光吸收光谱系统包括第一和第二光源，二向色光束组合器和波长选择模块。 第一光源发射具有在第一波长范围内的第一波长的第一光，并且第二光源发射具有不同于第一波长范围的第二波长范围内的第二波长的第二光。 二向色光束组合器包括预定的第一反射/透射过渡区域，二向色光束组合器被配置为透射第一光的第一部分并反射第二光的第二部分以提供组合光。 波长选择模块被配置为分散接收在入射孔处的组合光，以选择分散光的样本波长范围作为样本光，并且从出射孔输出具有选择的样本波长范围的样本光，以便照射 样品。

公开(公告)号：US09041923B2

公开(公告)日：2015-05-26

申请号：US13263386

申请日：2010-04-07

Applicant: Robert G. Messerchmidt

Inventor： Robert G. Messerchmidt

IPC: G01J3/44 ,  G01N21/552 ,  G01J3/02 ,  G01J3/42 ,  G01J3/427

CPC classification number: G01N21/552 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/0264 ,  G01J3/42 ,  G01J3/427

Abstract: Spectroscopy apparatuses oriented to the critical angle of the sample are described that detecting the spectral characteristics of a sample wherein the apparatus consists of an electromagnetic radiation source adapted to excite a sample with electromagnetic radiation introduced to the sample at a location at an angle of incidence at or near a critical angle of the sample; a transmitting crystal in communication with the electromagnetic radiation source and the sample, the transmitting crystal having a high refractive index adapted to reflect the electromagnetic radiation internally; a reflector adapted to introduce the electromagnetic radiation to the sample at or near an angle of incidence near the critical angle between the transmitting crystal and sample; and a detector for detecting the electromagnetic radiation from the sample. Also, provided herein are methods, systems, and kits incorporating the peri-critical reflection spectroscopy apparatus.

Abstract translation: 描述了定向到样品的临界角的光谱装置，其检测样品的光谱特性，其中该装置由电磁辐射源组成，该电磁辐射源适于用在入射角处的位置处引入样品的电磁辐射来激发样品 或接近样品的临界角; 与电磁辐射源和样品通信的透射晶体，透射晶体具有适于在内部反射电磁辐射的高折射率; 反射器，其适于将电磁辐射引入接近接近发射晶体和样品之间的临界角的入射角; 以及用于检测来自样品的电磁辐射的检测器。 此外，本文提供了包含周边反射光谱仪的方法，系统和试剂盒。