公开(公告)号：US10101266B2

公开(公告)日：2018-10-16

申请号：US15023721

申请日：2014-09-17

Applicant: Vaisala Oyj

Inventor： Veli-Pekka Viitanen

IPC: G01N21/25 ,  G01N21/31 ,  G01J3/26 ,  G01J3/427 ,  G01N21/3504 ,  G01N33/28 ,  G01J3/42 ,  G01N21/27

Abstract: The present invention concerns a method and system for gas concentration measurement of gas or gas mixtures dissolved in liquids. A gas or gas mixture dissolved in a liquid sample is extracted from the liquid sample using an extraction system and conducted into a measurement chamber. Then a measurement signal is generated by means of a radiant source and the measurement signal is directed to a measurement object in a measurement chamber containing the gas or gas mixture to be measured. The measurement signal is filtered using at least two wavelengths, whereupon the filtering is preferably implemented by means of an electrically tunable, short-resonator Fabry-Perot interferometer. Then the filtered measurement signals are detected my means of a detector.

公开(公告)号：US10101202B2

公开(公告)日：2018-10-16

申请号：US15598152

申请日：2017-05-17

Applicant: University of Maribor

Inventor： Denis Donlagic ,  Simon Pevec

IPC: G01D5/353 ,  G01J3/02 ,  G01J3/28 ,  G01J3/10 ,  G01L9/00 ,  G01J3/26 ,  G01J3/32 ,  G01J3/42 ,  G01J3/427

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. Optical assemblies and methods of interrogating optical sensors are provided, as are numerous other aspects.

公开(公告)号：US20180283943A1

公开(公告)日：2018-10-04

申请号：US15476601

申请日：2017-03-31

Applicant: The Boeing Company

Inventor： Robert J. Klein

IPC: G01J3/02 ,  G01J3/28 ,  G01J3/42

CPC classification number: G01J3/28 ,  G01N21/274 ,  G01N2021/0118

Abstract: A method of implementing a self-calibrating database of spectral data includes receiving remotely-sensed spectral data for a geographic location. The method also includes accessing spectral data for a composition of materials at the geographic location from a database of spectral data for compositions of materials at respective geographic locations. The method includes calibrating the spectral data to match the remotely-sensed spectral data and thereby produce calibrated spectral data for the composition. The method includes validating the calibrated spectral data for the composition. And in an instance in which the calibrated spectral data for the composition is validated, the method includes replacing the spectral data with the calibrated spectral data to produce an enhanced database of spectral data for use in identifying materials or compositions of materials therefrom; and in at least one instance, outputting identifiers of the materials in the composition of materials.

公开(公告)号：US20180274978A1

公开(公告)日：2018-09-27

申请号：US15768714

申请日：2017-08-10

Applicant: Shenzhen Institute of Terahertz Technology and Innovation ,  Shenzhen Terahertz System Equipment Co., Ltd.

Inventor： Qing Ding ,  Shichang Peng ,  Yi Pan ,  Chen Li

IPC: G01J3/02 ,  G01J3/06 ,  G01J3/42 ,  G01N21/3586

CPC classification number: G01J3/0208 ,  G01J3/06 ,  G01J3/42 ,  G01J2003/064 ,  G01J2003/423 ,  G01N21/3586 ,  G02B26/06

Abstract: A delay line device and a terahertz time-domain spectrometer system include: a baseplate, a slide rail component, in which the slide rail component includes a slide, a reflector, a grating ruler component, and an electric-magnetic induction component. When the electric-magnetic component, after being applied a current, cuts the magnetic induction coil to generate power to push the slide moving, the grating ruler component placed on the slide rail component collects the movement information of the slide. The slide's movement drives the reflector placed on the slide to move together to change the optical distance of a pump light, so as to generate the delay between the pump light and a probe light.The changes to the abstract are shown below:A delay line device and a terahertz time-domain spectrometer system include: a baseplate, a slide rail component, in which the slide rail component includes a slide, a reflector, a grating ruler component, and an electric-magnetic induction component. When the electric-magnetic component, after being applied a current, cuts the magnetic induction coil to generate power to push the slide moving, the grating ruler component placed on the slide rail component collects the movement information of the slide. The slide's movement drives the reflector placed on the slide to move together to change the optical distance of a pump light, so as to generate the delay between the pump light and a probe light.

公开(公告)号：US20180252581A1

公开(公告)日：2018-09-06

申请号：US15967964

申请日：2018-05-01

Applicant: NOVATRANS GROUP SA

Inventor： John F. ROULSTON ,  Daniel MANDELIK

IPC: G01J3/10 ,  G01J3/433 ,  G01J3/42

CPC classification number: G01J3/108 ,  G01J3/42 ,  G01J3/433 ,  G01J3/4338 ,  G01J2003/4332 ,  G01N21/3581

Abstract: A terahertz spectrometer includes: a terahertz-wave emitter and a terahertz receiver elements. The terahertz wave generated by means of generating beat frequency corresponding to the difference between two rapidly tunable continuous wave lasers. Having a difference in time between the interrogating signal and the reference signal at the receiver end side, which corresponds to intermediate frequency (IF), not centered around the baseband, i.e. zero Hertz. The offset step size of the intermediate frequency from zero Hertz is linearly correlated to the position of the interrogated object position.

公开(公告)号：US20180238814A1

公开(公告)日：2018-08-23

申请号：US15896978

申请日：2018-02-14

Applicant: KLA-Tencor Corporation

Inventor： Noam Sapiens ,  Shankar Krishnan ,  David Y. Wang ,  Alexander Buettner ,  Kerstin Purrucker ,  Kevin A. Peterlinz

IPC: G01N21/95 ,  G01B11/06 ,  G01J3/42 ,  G01N21/21 ,  G01N21/956 ,  H01L21/66

Abstract: Methods and systems for performing spectroscopic measurements of semiconductor structures including ultraviolet, visible, and infrared wavelengths greater than two micrometers are presented herein. A spectroscopic measurement system includes a combined illumination source including a first illumination source that generates ultraviolet, visible, and near infrared wavelengths (wavelengths less than two micrometers) and a second illumination source that generates mid infrared and long infrared wavelengths (wavelengths of two micrometers and greater). Furthermore, the spectroscopic measurement system includes one or more measurement channels spanning the range of illumination wavelengths employed to perform measurements of semiconductor structures. In some embodiments, the one or more measurement channels simultaneously measure the sample throughout the wavelength range. In some other embodiments, the one or more measurement channels sequentially measure the sample throughout the wavelength range.

公开(公告)号：US20180217054A1

公开(公告)日：2018-08-02

申请号：US15748264

申请日：2016-08-09

Applicant: TOKUSHIMA UNIVERSITY ,  FUJIKIN INCORPORATED

Inventor： Yoshihiro DEGUCHI ,  Masaaki NAGASE ,  Michio YAMAJI ,  Nobukazu IKEDA ,  Kouji NISHINO ,  Masayoshi KAWASHIMA ,  Kazuteru TANAKA

IPC: G01N21/31 ,  G01N21/59 ,  G01J3/42 ,  G01J3/10

CPC classification number: G01N21/3103 ,  G01J3/10 ,  G01J3/42 ,  G01N21/33 ,  G01N21/3504 ,  G01N21/59 ,  G01N2021/157 ,  G01N2021/3133 ,  G01N2201/0627 ,  G01N2201/08 ,  G01N2201/1211

Abstract: A concentration measurement device for measuring the concentration of a measured fluid within a measurement cell by detecting transmitted light that has passed through the measurement cell having a light incidence window and a light emission window disposed opposing to each other, comprising a reflected-light detector for detecting reflected light of the light incidence window.

公开(公告)号：US20180216994A1

公开(公告)日：2018-08-02

申请号：US15121520

申请日：2014-04-30

Applicant: Zhiyong TAN ,  Juncheng CAO ,  Li GU ,  Yonghao ZHU

Inventor： Zhiyong TAN ,  Juncheng CAO ,  Li GU ,  Yonghao ZHU

IPC: G01J1/42 ,  G01J1/08 ,  G01J3/42

CPC classification number: G01J1/4257 ,  G01J1/08 ,  G01J1/4228 ,  G01J3/42 ,  G01J2001/083

Abstract: A calibration method for an absolute responsivity of a terahertz quantum well detector and a calibration device thereof, in which the device at least comprises: a driving power supply, a single frequency laser source, an optic, a terahertz array detector, a terahertz dynamometer, a current amplifier and an oscilloscope. The calibration method adopts a power detectable single frequency laser source as a calibration photosource, to obtain the absolute responsivity parameters of the detector at the laser frequency; a normalized photocurrent spectrum of the detector is used to further calculate the absolute responsivity parameters of the detector at any detectable frequency. the single frequency laser source with periodically output is adopted as a calibration photosource, the terahertz array detector and the dynamometer are adopted to directly measure and obtain the incident power of the calibrated detector.

公开(公告)号：US20180214024A1

公开(公告)日：2018-08-02

申请号：US15915180

申请日：2018-03-08

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

Inventor： Elizabeth Marjorie Clare HILLMAN ,  Sean A. BURGESS

IPC: A61B5/00 ,  G01J3/457 ,  G01J3/42 ,  G01J3/28 ,  G02B23/24 ,  G02B26/10

CPC classification number: A61B5/0064 ,  A61B5/0066 ,  A61B5/0071 ,  A61B5/0073 ,  A61B5/0075 ,  A61B5/0088 ,  A61B5/444 ,  A61B5/445 ,  A61B2562/0238 ,  A61B2562/0242 ,  G01J3/2889 ,  G01J3/42 ,  G01J3/457 ,  G02B23/2476 ,  G02B26/101

Abstract: Optical imaging or spectroscopy described can use laminar optical tomography (LOT), diffuse correlation spectroscopy (DCS), or the like. An incident beam is scanned across a target. An orthogonal or oblique optical response can be obtained, such as concurrently at different distances from the incident beam. The optical response from multiple incident wavelengths can be concurrently obtained by dispersing the response wavelengths in a direction orthogonal to the response distances from the incident beam. Temporal correlation can be measured, from which flow and other parameters can be computed. An optical conduit can enable endoscopic or laparoscopic imaging or spectroscopy of internal target locations. An articulating arm can communicate the light for performing the LOT, DCS, or the like. The imaging can find use for skin cancer diagnosis, such as distinguishing lentigo maligna (LM) from lentigo maligna melanoma (LMM).

公开(公告)号：US20180202923A1

公开(公告)日：2018-07-19

申请号：US15742316

申请日：2016-07-11

Applicant: Konica Minolta, Inc.

Inventor： Masashi KAGEYAMA ,  Hikaru NAGASAWA ,  Ryouta ISHIKAWA ,  Kyuichiro IMADE

IPC: G01N21/3504 ,  G01N21/359 ,  G01N21/39 ,  G01J3/42

CPC classification number: G01N21/3504 ,  G01J3/021 ,  G01J3/0278 ,  G01J3/42 ,  G01J3/4338 ,  G01J2001/4242 ,  G01N21/359 ,  G01N21/39 ,  G01N2021/396 ,  G01N2021/399

Abstract: In a gas detection device and a gas detection method of the present invention, detection target gas is detected on the basis of reflected light of detection light (sensing light) frequency-modulated with respect to a center frequency and a distance to an object that generates the reflected light is measured. In the gas detection, an output signal of a light reception unit for receiving the reflected light is subjected to phase-sensitive detection. A synchronous detection timing of this phase-sensitive detection is adjusted on the basis of the measured distance to the object.