公开(公告)号：US20220018713A1

公开(公告)日：2022-01-20

申请号：US17379588

申请日：2021-07-19

Applicant: CHEMIMAGE CORPORATION

Inventor： Patrick J. TREADO ,  Matthew P. NELSON ,  Shawna TAZIK ,  Robert C. SCHWEITZER

IPC: G01J3/28 ,  G01N21/31

Abstract: The conformal spectral library training method (CSLTM) of the disclosure allows sets of voltages for an optical filter to be calculated by way of a direct calculation without processing large amounts of spectral information, which significantly increases the speed of processing spectral information.

公开(公告)号：US20220010219A1

公开(公告)日：2022-01-13

申请号：US16946823

申请日：2020-07-08

Applicant: ExxonMobil Research and Engineering Company

Inventor： Chengrong Wang ,  Anding Zhang ,  Xiaochun Xu ,  Samuel J. Cady ,  Shifang Luo ,  Michael H. Ring ,  Maria Vanessa C. Aguinaldo ,  John Della Mora ,  Kegun L. Ream

IPC: C10G3/00 ,  C10L1/04 ,  G01J3/28

Abstract: Disclose is an online analyzer to monitor conversion of a biofeedstock in a first hydrotreating stage to avoid catalyst poisoning in a subsequent stage. An example method of processing a biofeedstock may comprise hydrotreating the biofeedstock by reaction with hydrogen to form a hydrotreated biofeedstock. The method may further comprise monitoring conversion of the biofeedstock in the hydrotreating with an online analyzer.

公开(公告)号：US11222203B2

公开(公告)日：2022-01-11

申请号：US16689726

申请日：2019-11-20

Applicant: Altria Client Services LLC

Inventor： Henry M. Dante ,  Samuel Timothy Henry ,  Seetharama C. Deevi

IPC: G06K9/00 ,  G01J3/28 ,  A24B15/18 ,  A24B3/16 ,  B07C5/342 ,  G06K9/62 ,  G06K9/46 ,  G06F16/51 ,  G01N21/31 ,  B07C5/36 ,  G06T7/00 ,  G01N21/84

Abstract: A method for removing foreign matter from an agricultural product stream of a manufacturing process. The method includes conveying a product stream past an inspection station; scanning a region of the agricultural product stream as it passes the inspection station using at least one light source of a single or different wavelengths; generating hyperspectral images from the scanned region; determining a spectral fingerprint for the agricultural product stream from the hyperspectral images; comparing the spectral fingerprint obtained in step (c) to a spectral fingerprint database containing a plurality of fingerprints using a computer processor to determine whether foreign matter is present and, if present, generating a signal in response thereto; and removing a portion of the conveyed product stream in response to the signal. A system for detecting foreign matter within an agricultural product stream is also provided.

公开(公告)号：US20210404886A1

公开(公告)日：2021-12-30

申请号：US17372321

申请日：2021-07-09

Applicant: SIGMA LABS, INC.

Inventor： Vivek R. Dave ,  Mark J. Cola ,  R. Bruce Madigan ,  Martin S. Piltch ,  Alberto Castro

IPC: G01K13/00 ,  G01N21/71 ,  G01J3/28 ,  G01J3/443 ,  B22F10/20 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/00 ,  B23K26/342 ,  B23K26/70 ,  B23K9/04 ,  B23K9/095 ,  B23K10/02 ,  B23K15/00

Abstract: An optical manufacturing process sensing and status indication system is taught that is able to utilize optical emissions from a manufacturing process to infer the state of the process. In one case, it is able to use these optical emissions to distinguish thermal phenomena on two timescales and to perform feature extraction and classification so that nominal process conditions may be uniquely distinguished from off-nominal process conditions at a given instant in time or over a sequential series of instants in time occurring over the duration of the manufacturing process. In other case, it is able to utilize these optical emissions to derive corresponding spectra and identify features within those spectra so that nominal process conditions may be uniquely distinguished from off-nominal process conditions at a given instant in time or over a sequential series of instants in time occurring over the duration of the manufacturing process.

公开(公告)号：US11209311B2

公开(公告)日：2021-12-28

申请号：US16822929

申请日：2020-03-18

Applicant: VIAVI Solutions Inc.

Inventor： Michael Klimek

IPC: G01J3/28 ,  G01J3/02

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：US11209273B2

公开(公告)日：2021-12-28

申请号：US16081655

申请日：2017-03-15

Applicant: QINETIQ LIMITED

Inventor： Mark Anthony O'Dell ,  Stephen Barry Foulkes ,  Philip John Kent

IPC: G01C21/02 ,  G01J3/02 ,  G01J3/28 ,  G01S3/786

Abstract: A celestial navigation system includes an optical device for receiving light from a celestial object, a spectrometer for measuring a spectrum of the light in sufficient detail to identify absorption and/or emission features, and a processor for processing the spectrum to match the spectrum, or a processed version thereof, against a set of reference spectra information in a database, a device for measuring the pointing direction of the optical device and a clock. The matching may be on a maximum likelihood basis. The system is thus able, on identification of a single star, and, using commonly available navigational almanacs, to calculate a geographical position. Celestial navigation takes place even when only one celestial object (that is also within the database) is visible, although improved accuracy may be obtained with multiple observations. Advantageously, the database includes stars of the K and/or M type, that have more characteristic spectral content.

公开(公告)号：US20210396669A1

公开(公告)日：2021-12-23

申请号：US17407257

申请日：2021-08-20

Applicant: The Government of the United States of America, as represented by the Secretary of the Navy

Inventor： Jerry R. Meyer ,  Igor Vurgaftman ,  Chadwick Lawrence Canedy ,  William W. Bewley ,  Chul Soo Kim ,  Charles D. Merritt ,  Michael V. Warren ,  R. Joseph Weiblen ,  Mijin Kim

IPC: G01N21/59 ,  H01S5/028 ,  H01S5/10 ,  H01S5/125 ,  H01S5/34 ,  H01S5/343 ,  H01S5/042 ,  H01S5/20 ,  H01S5/02 ,  H01S5/026 ,  G02B6/10 ,  G01N21/27 ,  G01N21/25 ,  G01J3/18 ,  G01J3/28 ,  H01S5/22

Abstract: Building blocks are provided for on-chip chemical sensors and other highly-compact photonic integrated circuits combining interband or quantum cascade lasers and detectors with passive waveguides and other components integrated on a III-V or silicon. A MWIR or LWIR laser source is evanescently coupled into a passive extended or resonant-cavity waveguide that provides evanescent coupling to a sample gas (or liquid) for spectroscopic chemical sensing. In the case of an ICL, the uppermost layer of this passive waveguide has a relatively high index of refraction that enables it to form the core of the waveguide, while the ambient air, consisting of the sample gas, functions as the top cladding layer. A fraction of the propagating light beam is absorbed by the sample gas if it contains a chemical species having a fingerprint absorption feature within the spectral linewidth of the laser emission.

公开(公告)号：US11204314B2

公开(公告)日：2021-12-21

申请号：US15708598

申请日：2017-09-19

Applicant: Seiko Epson Corporation

Inventor： Hikaru Kurasawa

IPC: G01N21/27 ,  G01N21/35 ,  G01N21/359 ,  A61B5/1455 ,  H01J49/00 ,  G01J3/28

Abstract: A calibration data acquisition unit (a) acquires Q optical spectra, S evaluation spectra, and a reference spectrum of a target component, (b) extracts R subsets from a set of the optical spectra, (c) performs independent component analysis in which component amounts are treated as independent components on each subset so as to acquire component natural spectra and component calibration spectra, (d) obtains an inner product value between the component calibration spectrum and the evaluation spectrum, (e) obtains a correlation degree between a component amount for the target component and the inner product value with respect to each component calibration spectrum, (f) obtains a similarity between each component natural spectrum and a reference spectrum, (g) selects a component calibration spectrum causing a comprehensive evaluation value based on the correlation degree and the similarity to be greatest as the target component calibration spectrum, and (h) creates a calibration curve.

公开(公告)号：US20210389250A1

公开(公告)日：2021-12-16

申请号：US17462147

申请日：2021-08-31

Applicant: OUTSENSE DIAGNOSTICS LTD.

Inventor： Ishay Attar ,  Yaara Kapp-Barnea

IPC: G01N21/64 ,  A61B10/00 ,  G01J3/10 ,  G01N21/31 ,  G01J3/28 ,  G01J5/08 ,  G01J5/10 ,  G01N33/493

Abstract: Apparatus and methods are described for use with feces of a subject that are disposed within a toilet bowl, and an output device. One or more light sensors are configured to receive light from the toilet bowl, while the feces are disposed within the toilet bowl. A computer processor analyzes the received light, and, in response thereto, detects a currently-occurring inflammatory bowel disease episode, and/or a predicted upcoming inflammatory bowel disease episode. The computer processor generates an output on the output device, at least partially in response thereto. Other applications are also described.

公开(公告)号：US20210389242A1

公开(公告)日：2021-12-16

申请号：US17407263

申请日：2021-08-20

Applicant: The Government of the United States of America, as represented by the Secretary of the Navy

Inventor： Jerry R. Meyer ,  Igor Vurgaftman ,  Chadwick Lawrence Canedy ,  William W. Bewley ,  Chul Soo Kim ,  Charles D. Merritt ,  Michael V. Warren ,  R. Joseph Weiblen ,  Mijin Kim

IPC: G01N21/59 ,  H01S5/028 ,  H01S5/10 ,  H01S5/125 ,  H01S5/34 ,  H01S5/343 ,  H01S5/042 ,  H01S5/20 ,  H01S5/02 ,  H01S5/026 ,  G02B6/10 ,  G01N21/27 ,  G01N21/25 ,  G01J3/18 ,  G01J3/28 ,  H01S5/22

Abstract: Building blocks are provided for on-chip chemical sensors and other highly-compact photonic integrated circuits combining interband or quantum cascade lasers and detectors with passive waveguides and other components integrated on a III-V or silicon. A MWIR or LWIR laser source is evanescently coupled into a passive extended or resonant-cavity waveguide that provides evanescent coupling to a sample gas (or liquid) for spectroscopic chemical sensing. In the case of an ICL, the uppermost layer of this passive waveguide has a relatively high index of refraction that enables it to form the core of the waveguide, while the ambient air, consisting of the sample gas, functions as the top cladding layer. A fraction of the propagating light beam is absorbed by the sample gas if it contains a chemical species having a fingerprint absorption feature within the spectral linewidth of the laser emission.