公开(公告)号：US10302563B2

公开(公告)日：2019-05-28

申请号：US14913296

申请日：2014-08-21

Applicant: Tokushima University

Inventor： Yoshihiro Deguchi ,  Takahiro Kamimoto

IPC: G01N21/61 ,  G01N21/3504 ,  G01J3/427 ,  G01N21/31 ,  G01N21/39 ,  G01J5/00 ,  G01J3/433 ,  G01J5/60 ,  G01K11/18 ,  G01K11/00

Abstract: A gas analyzing apparatus includes first and second laser sources that output first and second laser lights, a laser controller that controls the first and second laser sources to vary wavelengths of the first and second laser lights in the respective predetermined wavelength ranges, an optical multiplexer that multiplexes the first and second laser lights to transmit the multiplexed laser light to a target gas, an optical receiver that receives the laser light transmitted through the target gas, and an analyzer that analyzes a temperature and/or a concentration of the target gas based on an electric signal output from the optical receiver. While varying the wavelengths of the laser lights, the laser controller controls amplitudes of the first and second laser lights to differ from each other and varies intensities of the first and second laser lights in the opposite direction.

公开(公告)号：US20190069476A1

公开(公告)日：2019-03-07

申请号：US16106201

申请日：2018-08-21

Applicant: TOPCON CORPORATION

Inventor： Taichi YUASA

IPC: A01C21/00 ,  G01J3/02 ,  G01J3/10 ,  G01J3/427 ,  G01N21/3563

CPC classification number: A01C21/007 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0218 ,  G01J3/0224 ,  G01J3/024 ,  G01J3/0272 ,  G01J3/0286 ,  G01J3/0289 ,  G01J3/0291 ,  G01J3/10 ,  G01J3/108 ,  G01J3/427 ,  G01J2003/104 ,  G01J2003/4275 ,  G01N21/3563 ,  G01N21/359 ,  G01N2021/1797 ,  G01N2021/3181 ,  G01N2021/8466 ,  G01N2201/0214 ,  G01N2201/0221 ,  G01N2201/0627 ,  G01N2201/0691

Abstract: A light source section configured to couple a plurality of laser beams having different wavelengths and emit measuring light; an illuminating section configured to illuminate a measurement target at a predetermined angle; a light receiving section configured to receive reflected measuring light from the measurement target; and a controlling section configured to compute a reflectance at each of the wavelengths, based on a light receiving result. The light source section includes: a first and a second light source configured to emit each laser beams having different wavelengths; and a dichroic mirror disposed in optical axes of the laser beams intersected, configured to combine the laser beams. The light receiving section includes: a first, a second and a third light receiving unit configured to receive the reflected measuring light from different distance. The controlling section is configured to select which of results from each light receiving unit to use.

公开(公告)号：US20190056270A1

公开(公告)日：2019-02-21

申请号：US15768548

申请日：2017-03-02

Applicant: CI SYSTEMS (ISRAEL) LTD.

Inventor： Dario CABIB

IPC: G01J3/45 ,  G01J3/427 ,  G01J3/433

CPC classification number: G01J3/45 ,  G01J3/0205 ,  G01J3/26 ,  G01J3/427 ,  G01J3/4338 ,  G01J3/4531 ,  G01J3/4532 ,  G01J2003/425 ,  G02B27/50

Abstract: An interference fringe pattern generator forms an interference fringe pattern from the light rays diffused from a region of an object positioned against a background. A planar array of detector pixels is arranged to capture an image of the interference fringe pattern. A storage medium records information indicative of intensity values of the image of the interference fringe pattern captured by a selected group of pixels of the planar array of detector pixels. The information is recorded as a function of the optical path difference values traversed by the diffused light rays through the interference fringe pattern generator for each of the pixels in the selected group of pixels. A processor determines the spectral characteristics of the object based on the information indicative of the intensity values recorded by the storage medium and the optical path difference values traversed by the diffused light rays.

公开(公告)号：US20180356290A1

公开(公告)日：2018-12-13

申请号：US15778753

申请日：2015-11-26

Applicant: Sensirion AG

Inventor： Martin WINGER ,  Marc VON WALDKIRCH ,  Matthias STREIFF ,  Alexander LOCHBAUM ,  Jürg LEUTHOLD

IPC: G01J5/08 ,  G01J5/10 ,  G01J5/06 ,  G01J3/427 ,  G01N21/3504

CPC classification number: G01J5/0853 ,  G01J3/42 ,  G01J3/427 ,  G01J5/061 ,  G01J5/10 ,  G01J2005/106 ,  G01N21/3504

Abstract: An infrared device comprises a substrate (1), and arranged on or in the substrate (1) a configuration (3) for one of selectively emitting and selectively absorbing infrared radiation of a band, the configuration (3) comprising a pattern made from an electrically conducting material on a first level (L1), an electrically conducting film (33) on a second level (L2), and a dielectric layer (24) between the pattern and the film (33). One or more of a heater (4) for heating the configuration (3), and a thermal sensor (5) arranged for sensing the selective infrared radiation of the band absorbed by the configuration (3) on or in the substrate.

公开(公告)号：US09778111B2

公开(公告)日：2017-10-03

申请号：US15445021

申请日：2017-02-28

Applicant: Commissariat a l'energie atomique et aux energies alternatives

Inventor： Sylvain Stanchina ,  Anne Koenig

IPC: G01J3/00 ,  G01J3/427 ,  G01N21/359 ,  G01N21/49 ,  G01N21/59 ,  A61B5/024 ,  G01N21/31

CPC classification number: G01J3/427 ,  A61B5/024 ,  A61B5/02433 ,  A61B5/14552 ,  A61B5/7214 ,  A61B5/7282 ,  A61B2562/0238 ,  G01N21/359 ,  G01N21/49 ,  G01N21/59 ,  G01N2021/3129

Abstract: The invention is a method for estimating a cardiac frequency via the detection of radiation backscattered or transmitted by a bodily zone. The part is illuminated, simultaneously or successively, by light radiation extending over a first spectral band and a second spectral band. A photodetector detects radiation emitted by the bodily zone under the effect of its illumination, in each of the spectral bands. A first detection function and a second detection function are formed from the radiation detected in each spectral band, respectively. The method allows the cardiac frequency to be determined via the determination of characteristic instants that are identified from the first detection function and the second detection function simultaneously.

公开(公告)号：US20170248469A1

公开(公告)日：2017-08-31

申请号：US15445021

申请日：2017-02-28

Applicant: Commissariat a l'energie atomique et aux energies alternatives

Inventor： Sylvain STANCHINA ,  Anne KOENIG

IPC: G01J3/427 ,  A61B5/024 ,  G01N21/59 ,  G01N21/359 ,  G01N21/49

CPC classification number: G01J3/427 ,  A61B5/024 ,  A61B5/02433 ,  A61B5/14552 ,  A61B5/7214 ,  A61B5/7282 ,  A61B2562/0238 ,  G01N21/359 ,  G01N21/49 ,  G01N21/59 ,  G01N2021/3129

Abstract: The invention is a method for estimating a cardiac frequency via the detection of radiation backscattered or transmitted by a bodily zone. The part is illuminated, simultaneously or successively, by light radiation extending over a first spectral band and a second spectral band. A photodetector detects radiation emitted by the bodily zone under the effect of its illumination, in each of the spectral bands. A first detection function and a second detection function are formed from the radiation detected in each spectral band, respectively. The method allows the cardiac frequency to be determined via the determination of characteristic instants that are identified from the first detection function and the second detection function simultaneously.

公开(公告)号：US09677933B2

公开(公告)日：2017-06-13

申请号：US14010675

申请日：2013-08-27

Applicant: University of Maribor

Inventor： Denis Donlagic ,  Simon Pevec

IPC: G01J3/02 ,  G01J3/28 ,  G01J3/10 ,  G01L9/00 ,  G01J3/26 ,  G01J3/32 ,  G01J3/42 ,  G01J3/427

CPC classification number: G01J3/0218 ,  G01B2290/25 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/0237 ,  G01J3/0289 ,  G01J3/10 ,  G01J3/26 ,  G01J3/28 ,  G01J3/2803 ,  G01J3/32 ,  G01J3/42 ,  G01J3/427 ,  G01J2003/102 ,  G01J2003/104 ,  G01L9/0079

Abstract: An optical system having an optical sensor with an ultra-short FP cavity, and a low-resolution optical interrogation system coupled to the optical sensor and operational to send light signals and receive light signals to and from the optical sensor is disclosed. The optical system may operate in a wavelength range including the visible and near-infrared range. Methods of interrogating optical sensors are provided, as are numerous other aspects.

公开(公告)号：US09523636B2

公开(公告)日：2016-12-20

申请号：US14441484

申请日：2012-12-28

Applicant: Halliburton Energy Services, Inc.

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

IPC: G01N21/31 ,  G01V8/10 ,  H03K7/08 ,  G01N21/47 ,  G01N21/25 ,  G01J3/433 ,  G01J3/10 ,  G01J5/52 ,  H05B37/02 ,  E21B49/08 ,  G01J3/02 ,  G01J3/427 ,  E21B47/10

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：US09423296B2

公开(公告)日：2016-08-23

申请号：US14007962

申请日：2011-03-29

Applicant: Christian Müller

Inventor： Christian Müller

IPC: G01J1/42 ,  G01J3/36 ,  G01J3/427 ,  G01J3/02

CPC classification number: G01J1/4228 ,  G01J3/0264 ,  G01J3/36 ,  G01J3/427

Abstract: The invention relates to a unit (1) for determining the dominant light source type in electromagnetic radiation (2) incident on the unit (1) and generated from a plurality of light sources of different types. The unit comprises at least one first photodiode (10) designed to detect electromagnetic radiation in the visible spectral range and to generate a first output signal (11). The unit comprises at least one second photodiode (20) designed to detect electromagnetic radiation in the infrared spectral range and to generate a second output signal (21). The unit comprises at least one calculation unit (30) designed to derive a quotient result (23) and a frequency result (13) from the first (11) and second (21) output signals. The frequency result (13) provides information about the presence or absence of signal components in a predetermined frequency range contained in the electromagnetic radiation. The unit comprises at least one evaluation unit (40) designed to derive the dominant light source type from the quotient result (23) and the frequency result (13).

Abstract translation: 本发明涉及一种用于确定入射在单元（1）上并由多个不同类型的光源产生的电磁辐射（2）中的主要光源类型的单元（1）。 该单元包括设计成检测可见光谱范围内的电磁辐射并产生第一输出信号（11）的至少一个第一光电二极管（10）。 该单元包括设计成检测红外光谱范围内的电磁辐射并产生第二输出信号（21）的至少一个第二光电二极管（20）。 该单元包括设计成从第一（11）和第二（21）输出信号导出商结果（23）和频率结果（13）的至少一个计算单元（30）。 频率结果（13）提供关于包含在电磁辐射中的预定频率范围中信号分量的存在或不存在的信息。 该单元包括设计成从商结果（23）和频率结果（13）导出主要光源类型的至少一个评估单元（40）。

公开(公告)号：US09128037B2

公开(公告)日：2015-09-08

申请号：US14293473

申请日：2014-06-02

Applicant: SICK AG

Inventor： Rolf Disch ,  Florian Bruchig ,  Pascal Ortwein

IPC: G01N21/01 ,  G01N21/33 ,  G01N21/35 ,  G01J3/427 ,  G01N21/31 ,  G01N21/3504 ,  G01J3/08 ,  G01J3/10 ,  G01J3/42

CPC classification number: G01N21/3151 ,  G01J3/08 ,  G01J3/10 ,  G01J3/42 ,  G01J3/427 ,  G01N21/33 ,  G01N21/3504 ,  G01N2021/3155 ,  G01N2021/317 ,  G01N2021/3513

Abstract: The invention relates to a measurement apparatus for the determination of gas concentrations. The apparatus comprises two spectral channels, wherein the channels are separated by a single chopper wheel. The chopper wheel has several functions. On the transmitting side, it brings the light of the two light sources on the same measuring path, on the receiving side it associates the light to the associated receiver; it has its chopper function to use the lock-in technique; and it opens the possibility to implement an easy zero point correction.

Abstract translation: 本发明涉及一种用于确定气体浓度的测量装置。 该装置包括两个光谱通道，其中通道由单个切碎机轮分开。 斩波轮有几个功能。 在发射侧，它将两个光源的光引入相同的测量路径，在接收侧，它将光与相关的接收器相关联; 它具有切割功能，可以使用锁定技术; 并且打开了实现简单零点校正的可能性。