公开(公告)号：US10761020B2

公开(公告)日：2020-09-01

申请号：US15752877

申请日：2016-09-01

Applicant: California Institute of Technology

Inventor： Ramabhadran Vasudev

IPC: G01N21/00 ,  G01N21/39 ,  G01N21/03 ,  G01J3/42

Abstract: Spectroscopic apparatus and methods incorporating a gas sensor configured to detect low concentration gases, including gases that are hazardous volatiles are provided. Low concentration gases can comprise gases where detection of concentrations on the order of parts-per-million (ppm), and in many embodiments part-per-billion (ppb) is required. The gas may be a species, such as, for example hydrogen sulfide (H2S) that may be produced in drilling and/or volcanic eruptions. The spectroscopic apparatus and methods are configured to operate in particular atmospheres where gas detection can be challenging, such as in ambient air and/or in space where various contaminants may be present. The spectroscopic apparatus and methods may incorporate a long path length detector, such as, for example, a cavity-enhanced absorption spectrometer. The methods and apparatus further incorporate a wavelength modulation technique to improve the signal-to-noise ratio.

公开(公告)号：US10760964B2

公开(公告)日：2020-09-01

申请号：US16402445

申请日：2019-05-03

Applicant: VERIFOOD, Ltd.

Inventor： Damian Goldring ,  Dror Sharon ,  Sagee Rosen ,  Ittai Nir ,  Uri Kinrot ,  Omer Keilaf ,  Guy Brodetzki ,  Assaf Carmi ,  Oren Buskila

IPC: G01J3/02 ,  G01N21/31 ,  G01N21/3563 ,  G01N21/359 ,  G01J3/10 ,  G01J3/36 ,  G01J3/28 ,  G01J3/42

Abstract: A spectrometer system may be used to determine one or more spectra of an object, and the one or more spectra may be associated with one or more attributes of the object that are relevant to the user. While the spectrometer system can take many forms, in many instances the system comprises a spectrometer and a processing device in communication with the spectrometer and with a remote server, wherein the spectrometer is physically integrated with an apparatus. The apparatus may have a function different than that of the spectrometer, such as a consumer appliance or device.

公开(公告)号：US20200271520A1

公开(公告)日：2020-08-27

申请号：US16797317

申请日：2020-02-21

Applicant: TOHOKU TECHNO ARCH CO., LTD. ,  HAMAMATSU PHOTONICS K.K.

Inventor： Yuji MATSUURA ,  Naoto SHIBATA

IPC: G01J3/42 ,  H01S5/14 ,  H01S5/34 ,  G02B5/18

Abstract: A spectrum measurement apparatus includes a signal generation unit, a detector, an AD converter, and an operation unit. An external cavity laser light source includes a quantum cascade laser and a diffraction grating. The signal generation unit outputs a wavelength sweep signal repeatedly giving an instruction for sweep of a resonant wavelength selected by the diffraction grating and a pumping instruction signal repeatedly giving an instruction for on/off of pumping of the quantum cascade laser in each period of wavelength sweep based on the instruction of the wavelength sweep signal. The operation unit inputs a digital value output from the AD converter, obtains an oscillation spectrum in each period of the wavelength sweep, and integrates the oscillation spectra obtained with changing the phase of the pumping instruction signal for each period of the wavelength sweep.

公开(公告)号：US10753794B2

公开(公告)日：2020-08-25

申请号：US15577416

申请日：2015-05-28

Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLC

Inventor： Mordehai Margalit ,  Curtis D. Moyer

IPC: G01J3/10 ,  G01J3/02 ,  G01J3/42 ,  G01J3/433 ,  G01J3/28 ,  G01N21/64 ,  G01J3/12 ,  G01J1/42

Abstract: Technologies are generally described for concurrent activation of multiple illumination sources to analyze a sample. A controller may be configured to activate the illumination sources substantially simultaneously, where a current or voltage of each activated illumination source is modulated at a different frequency by respective circuit drivers of the controller. Each activated illumination source may be configured to illuminate the sample with light at a different emission wavelength, and one or more detectors may be configured to detect a composite signal from the sample in response to the illumination. The composite signal may include multiple returned signals, where each returned signal corresponds to light emitted from one of the activated illumination sources at a respective emission wavelength. One or more filters, each associated with a respective modulation frequency of one activated illumination source, may be configured to extract each returned signal from the composite signal for analysis.

公开(公告)号：US10746599B2

公开(公告)日：2020-08-18

申请号：US16175369

申请日：2018-10-30

Applicant: VARIABLE, INC.

Inventor： George Yang Yu

IPC: G01J3/42 ,  G01J3/02

Abstract: An optical detector is provided with multiple light sources having distinct spectral characteristics, which are controlled on/off across a range of lighting intensity combinations. A measurement sensor receives radiated light that is reflected from a target surface via confined optical channels, and generates representative output signals. A local controller or a remote computing device receives the output signals or corresponding messages from the optical detector, and generates a low resolution spectral data set based on the signals for each of the lighting intensity combinations. The low resolution spectral data set is interpolated based on machine learning algorithms trained with high resolution data from a reference device to generate a high resolution spectral data set associated with the target surface. In an embodiment, an auxiliary sensor measures light reflected from one or more light sources, wherein output signals from the measurement sensor are normalized to output values from the auxiliary sensor.

公开(公告)号：US20200249085A1

公开(公告)日：2020-08-06

申请号：US16757491

申请日：2018-10-22

Applicant: BSH HAUSGERAETE GMBH

Inventor： PHILIPP NEUMAIER ,  RAMONA POURZIAEI

IPC: G01J3/02 ,  D06F33/30 ,  G01J3/42 ,  G01J3/50 ,  G01N21/359 ,  G01N21/94

Abstract: A handheld scanner contains an IR spectrometer with a radiation source and a radiation detector, a control unit, an interface for wireless data communication, and a RGB sensor. The handheld scanner is configured to detect soiling on a laundry item. Additionally, the handheld scanner can be integrated into a system, and used in a method for operating the system.

公开(公告)号：US10732035B2

公开(公告)日：2020-08-04

申请号：US16068445

申请日：2017-01-06

Applicant: Technische Universiteit Eindhoven

Inventor： Andrea Fiore ,  Robertus Willebrordus van der Heijden ,  Leonardo Midolo ,  {hacek over (Z)}arko Zobenica ,  Tianran Liu

IPC: G01J3/42 ,  G01J3/02 ,  G01J3/26 ,  G01J3/12

Abstract: A double membrane microspectrometer is provided that includes a first membrane having a first and second doped semiconductor layers, and a first intrinsic layer is disposed between the first and second layers, where the first intrinsic layer includes an optically absorbing material, a first pattern of through holes are disposed perpendicular through the first membrane having lateral support arms, a second membrane having a third doped layer and a fourth layer is an intrinsic layer or a doped layer, where the second membrane includes a second pattern of through holes, where the first membrane is separated from the second membrane by an insulating bridge layer and is supported above the second membrane by lateral support arms, where an absorption spectrum of the absorbing material is dependent on the separation distance of the membranes, electrodes are disposed on the first layer, the second layer, and the third layer operate the separation.

公开(公告)号：US10718665B2

公开(公告)日：2020-07-21

申请号：US16342884

申请日：2017-10-18

Applicant: ATOPTIX, Inc.

Inventor： Perry S. Edwards ,  Zhiwen Liu ,  Victor Bucklew ,  Baigang Zhang

IPC: G01J3/28 ,  G01J3/02 ,  G01J3/42 ,  G01N21/64

Abstract: A self-referencing mobile-compatible spectrophotometric system, including at least one light source, at least one spectral detection unit, and at least one reference sample. The system is configured to apply light from the at least one light source to a sample and receive a reflected light from the sample, and apply light to the at least one reference sample, and receive a reference reflected light from the at least one reference sample.

公开(公告)号：US10712275B2

公开(公告)日：2020-07-14

申请号：US16325894

申请日：2017-08-25

Applicant: The Texas A&M University System

Inventor： Peter M. Rentzepis ,  Thomas Cesario

IPC: G01N21/64 ,  G01J3/06 ,  G01J3/18 ,  G01J3/42 ,  G01J3/44 ,  G01J3/443 ,  G01J3/02 ,  G01J3/10 ,  G01N21/65

Abstract: A hand-held synchronous scan spectrometer for in situ analysis of bacteria, viruses, and fungi includes a housing that contains a light source, a first monochromator positioned to receive light from the light source and operable to direct a wavelength of the light from the light source towards a sample, a second monochromator positioned to receive fluoresced light from the sample and light from first monochromator, and a detector disposed within the housing and positioned to receive light output from the second monochromator. The hand-held synchronous scan spectrometer can include a display that is integrated into the housing or can utilize a display of a removable display device (e.g., a cell phone, PDA, tablet, and the like).

公开(公告)号：US20200218187A1

公开(公告)日：2020-07-09

申请号：US16736350

申请日：2020-01-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroyuki Takahashi ,  Naoto Tokuma

IPC: G03G15/00 ,  G01J3/42 ,  G01J3/50 ,  H04N1/00 ,  G03G21/16

Abstract: A measuring device a measurement unit configured to measure an image on a sheet, the measurement unit including a light emitting portion configured to illuminate the sheet with light, and a detecting portion configured to detect light reflected by the sheet; a supporting unit supporting the measurement unit; and a driving unit configured to move the measurement unit supported by the supporting unit in a scanning direction. A size, in the scanning direction, of a detectable range of the detecting portion in which the detecting portion is capable of detecting the reflected light from the sheet is larger than a size, in a sub-scanning direction perpendicular to the scanning direction and a normal direction of a surface of the sheet, of the detectable range of the detecting portion.