公开(公告)号：US12111211B2

公开(公告)日：2024-10-08

申请号：US18323463

申请日：2023-05-25

Applicant: VIAVI Solutions Inc.

Inventor： Michael Klimek

IPC: G01J3/28 ,  G01J3/02

CPC classification number: G01J3/2823 ,  G01J3/0294 ,  G01J3/2803 ,  G01J2003/2826

Abstract: An optical device may comprise an array of sensor elements that includes a plurality of pixels and a multispectral filter disposed on the array of sensor elements. The multispectral filter may be configured to pass a first transmission percentage of light of a particular spectral range to a first set of pixels of the plurality of pixels and pass a second transmission percentage of light of the particular spectral range to a second set of pixels of the plurality of pixels.

公开(公告)号：US12050128B2

公开(公告)日：2024-07-30

申请号：US17755550

申请日：2020-10-20

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Kodai Murayama ,  Toshiyuki Saruya ,  Fumie Watanabe ,  Risa Hara

IPC: G01J3/10 ,  G01J3/02 ,  G01N21/65 ,  G01J3/28

CPC classification number: G01J3/108 ,  G01J3/0294 ,  G01N21/658 ,  G01J3/28 ,  G01J2003/2879

Abstract: A spectroscopic analysis device (1) according to the present disclosure includes a controller (40) that acquires refractive index information on a sample (S) based on information on a first spectroscopic spectrum in a first wavelength band in which only a resonance spectrum of surface plasmon occurs within a spectroscopic spectrum, determines, based on the acquired refractive index information, an incidence angle of irradiation light (L1) irradiated by an irradiator (10) with respect to a membrane (M) such that the peak wavelength of the resonance spectrum and the peak wavelength of an absorption spectrum of the sample (S) match in a second spectroscopic spectrum in a second wavelength band in which the resonance spectrum and the absorption spectrum occur within the spectroscopic spectrum, and analyzes the state of the sample (S) from information on the second spectroscopic spectrum obtained based on the determined incidence angle.

公开(公告)号：US20240219231A1

公开(公告)日：2024-07-04

申请号：US18148564

申请日：2022-12-30

Applicant: Endress+Hauser Optical Analysis, Inc.

Inventor： Marc Winter ,  Joseph B. Slater

IPC: G01J3/02 ,  G01J3/18 ,  G02B6/02

CPC classification number: G01J3/0294 ,  G01J3/0208 ,  G01J3/0221 ,  G01J3/024 ,  G01J3/18 ,  G02B6/02295

Abstract: A photonic crystal waveguide for conveying light with an input end and an output end to supply for an electromagnetic spectrometer includes: an input end having a convex envelope of a cross-section of the waveguide at the input end, which envelope defines a circular shape or a shape of a regular polygon with n1 corners, wherein n1 is a natural number bigger than 3; an output end having a cross-section that defines a slit shape; and a plurality of photonic crystal fibers, wherein an arrangement of the plurality of photonic crystal fibers defines the cross-sections at the input and output ends.

公开(公告)号：US12018984B2

公开(公告)日：2024-06-25

申请号：US17776032

申请日：2020-11-18

Applicant: UNIVERSITEIT GENT ,  IMEC VZW

Inventor： Fabio Pavanello ,  Dries Van Thourhout ,  Roeland Baets

IPC: G01J3/28 ,  G01J3/02 ,  G01J3/12

CPC classification number: G01J3/0294 ,  G01J3/12 ,  G01J3/28 ,  G01J2003/1213 ,  G01J2003/2879

Abstract: A temperature compensation method for wavelength monitoring using spectrometers on photonic integrated chips and a related temperature-compensated wavelength monitoring device include an optical filter of the chip filters a source signal to provide at least one spectral reference line to a first spectrometer to detect thermal wavelength drifts thereof. At least one spectral line to be monitored is received by the same or another spectrometer of the chip to detect wavelength shifts thereof. The detected thermal drift of the reference line is compared to calibrated thermal drifts for the reference line which is associated with a calibrated thermal drift for the spectral response curve of the spectrometer receiving the spectral line to be monitored. A thermal drift rate for the response curve of the optical filter differs from a thermal drift rate for the response curve of the first spectrometer at least by an amount.

公开(公告)号：US20240044709A1

公开(公告)日：2024-02-08

申请号：US18214974

申请日：2023-06-27

Applicant: Nanchang Hangkong University

Inventor： Jiulin SHI ,  Jin XU ,  Tianchi SUN ,  Liangya CUI ,  Xin LAN ,  Mingxuan LIU ,  Xingdao HE

IPC: G01J3/44 ,  G01J3/02 ,  G01J3/453 ,  G01J3/06

CPC classification number: G01J3/4412 ,  G01J3/0224 ,  G01J3/0294 ,  G01J3/0229 ,  G01J3/0208 ,  G01J3/4537 ,  G01J3/06 ,  G01J3/0278 ,  G01J3/027

Abstract: Disclosed is a linear array scanning Brillouin scattering elastic imaging device. In the device, a signal generating system consists of a narrow linewidth continuous wave laser, a half-wave plate, a beam expander, a Y-direction scanning galvanometer, a microlens array, a pinhole array filter, a first plano-convex lens, a polarization beam splitter, a quarter-wave plate and a microscope objective. A signal receiving system consists of a microscope objective, a quarter-wave plate, a polarization beam splitter and an eight-channel optical collimator array. Each channel of an eight-channel spectrometer consists of an optical collimator, a convex lens, a scanning Fabry-Perot interferometer, a photomultiplier tube and an eight-channel photon collection card.

公开(公告)号：US20240003740A1

公开(公告)日：2024-01-04

申请号：US18036458

申请日：2021-11-18

Applicant: SIGNIFY HOLDING B.V.

Inventor： PABLO MORTARI SCHIAVINI

IPC: G01J3/02 ,  H05B45/22 ,  A01G7/04 ,  A01K29/00 ,  G01J3/10

CPC classification number: G01J3/0297 ,  G01J3/0294 ,  H05B45/22 ,  A01G7/045 ,  A01K29/005 ,  G01J3/10 ,  G01J2003/104

Abstract: A method is provided of calibrating a lighting system to enable conversion between i) light output settings for a plurality of lighting channels of the lighting system, each channel having a respective color spectrum from a first set of color spectra, and ii) a light intensity at an area of interest for each of a second set of color spectra. The method derives a calibration matrix, based on a set default light outputs from the lighting channels, a mapping to light spectra to be measured, and light intensities measured at those light spectra. This calibration procedure takes advantage of the fact that using the same measurement device conventionally used for a simple calibration, it is possible to retrieve not only the total measured PPFD, but also partial PPFD values per spectral range.

公开(公告)号：US20230366811A1

公开(公告)日：2023-11-16

申请号：US18130567

申请日：2023-04-04

Applicant: Charles Swenson ,  Alan Marchant

Inventor： Charles Swenson ,  Alan Marchant

IPC: G01N21/3504 ,  G01J3/02

CPC classification number: G01N21/3504 ,  G01J3/0294

Abstract: A system and methods for optically detecting a target gas are disclosed and described. An imaging system can include a narrow-band optical interference filter with a center wavelength that corresponds to a feature in an absorption spectrum of a target gas at a normal angle of incidence. An optical component can receive incoming light from the target gas that has passed through the narrow-band optical interference filter, where the narrow-band optical interference filter is tilted relative to the optical component, which tilt shifts the wavelength of light from each target point that is able to pass through the narrow-band optical interference filter. A camera can receive the incoming light that has been focused by the optical component. Multiple image frames are collected for different orientations of the system with respect to the target and analyzed to perform hyperspectral charactetization of target gas absorption.

公开(公告)号：US20180217067A1

公开(公告)日：2018-08-02

申请号：US15747812

申请日：2016-10-14

Applicant: Scott M. GALLAGER ,  Woods Hole Oceanographic Institution

Inventor： Scott M. Gallager

IPC: G01N21/65 ,  G01N21/85 ,  G01J3/02 ,  G01J3/44 ,  G01N33/18

CPC classification number: G01N21/65 ,  G01J3/0294 ,  G01J3/44 ,  G01J2003/102 ,  G01J2003/104 ,  G01N21/8507 ,  G01N33/18 ,  G01N33/1826 ,  G01N2201/0218 ,  G01N2201/0221

Abstract: The present invention is directed toward the early detection of harmful algal blooms. The system employs the ability of whole cell non-contact micro Raman spectroscopy to detect cell pigmentation in such a way that distinct patterns or fingerprints can be assembled. Light field microscopy will provide a fundamentally innovative increase in image and sample volume. Furthermore, darkfield microscopy is employed to capture high-resolution, color images of the detected plankton to increase the accuracy of species identification and classification. Together, this new instrument will provide a powerful yet elegantly simple solution to detection of HAB cells and characterization of environmental conditions.

公开(公告)号：US20180195904A1

公开(公告)日：2018-07-12

申请号：US15738798

申请日：2016-06-28

Applicant: IMEC VZW

Inventor： Xavier Rottenberg

IPC: G01J3/36 ,  G01J3/02 ,  G01J3/26 ,  G01J3/28 ,  G01J3/32

CPC classification number: G01J3/36 ,  G01J3/0205 ,  G01J3/0294 ,  G01J3/12 ,  G01J3/26 ,  G01J3/2803 ,  G01J3/32 ,  G01N21/65

Abstract: The invention relates to a multi-channel spectrometer device (10) for detecting/quantifying a predetermined analyte (5) in a medium (6). The device (10) comprises an input (11) for receiving radiation (7), a first plurality of optical modulators (12) adapted for transforming the radiation (7) in accordance with a first transfer function, and a second plurality of optical modulators (13) adapted for transforming the radiation (7) in accordance with a second transfer function. The spectrometer device also comprises a detector (15) for generating output signals (4) indicative for the intensity of each transformed radiation signal. The ratio of the number of optical modulators in the first plurality and the number of optical modulators in the second plurality is determined by the ratio of a reference spectrum of the predetermined analyte transformed by the first transfer function and the reference spectrum transformed by the second transfer function.

公开(公告)号：US20180188109A1

公开(公告)日：2018-07-05

申请号：US15907359

申请日：2018-02-28

Applicant: arable Labs, Inc.

Inventor： Lawrence Adam Wolf ,  Benjamin Joseph Siegfried

IPC: G01J3/02 ,  G01J3/457

CPC classification number: G01J3/0297 ,  G01J3/0205 ,  G01J3/0264 ,  G01J3/0286 ,  G01J3/0291 ,  G01J3/0294 ,  G01J3/457

Abstract: A radiation measuring device for measuring electromagnetic radiation originating from an external source. The radiation measuring device includes, a spectrometer, a pyranometer, a pyrgeometer, a diffuser, and a control unit. The spectrometer and a pyranometer are positioned in a sensor zone of a housing of the radiation measuring device. The spectrometer measures visible shortwave radiation and near-infrared shortwave radiation received at the sensor zone. The pyranometer measures shortwave radiation received at the sensor zone. The pyrgeometer is positioned in another sensor zone of the housing and measures longwave radiation received at the other sensor zone. The control unit receives radiation measurements from the spectrometer, pyranometer, and pyrgeometer. A corrected amount of radiation received at the sensor zones of the radiation measuring device is determined from the received radiation measurements. Other embodiments are described and claimed.