公开(公告)号：US11204508B2

公开(公告)日：2021-12-21

申请号：US15410463

申请日：2017-01-19

Applicant: Lockheed Martin Corporation

Inventor： David R. Twede

IPC: G02B27/28 ,  G01J3/36 ,  H04N5/33 ,  G01J3/447 ,  G01J3/12 ,  G01J3/28

Abstract: An optical device is disclosed. The optical device has an optical path and includes a first polarizing filter positioned in the optical path that is configured to receive electromagnetic radiation (EMR) from a scene and to transmit a first subset of EMR comprising EMR in a first waveband that has a first polarization orientation and EMR in a second waveband. A second polarizing filter is positioned in the optical path downstream of the first polarizing filter that is configured to receive the first subset of EMR and to transmit a second subset of EMR comprising EMR in the second waveband that has a second polarization orientation and the EMR in the first waveband that has the first polarization orientation.

公开(公告)号：US11204278B2

公开(公告)日：2021-12-21

申请号：US16280691

申请日：2019-02-20

Applicant: Pressco Technology Inc.

Inventor： Don W. Cochran

IPC: G01J3/28 ,  G06T3/00 ,  G06T7/80 ,  G06T7/90 ,  G01J3/36

Abstract: A system is provided in an automated machine vision inspection environment. The system includes inspection cameras and a spectrophotometer or spectrometer, both implemented to be used online to detect the absolute colors of printed portions of items being inspected. The spectrophotometer or spectrometer is aimed at a fixed spot within a field of view of one of the digital cameras of an inspection system, which has a-priori knowledge as to exactly where the spectrophotometer or spectrometer is aimed. The image taken by the camera will be used to determine whether the desired measurement spot on the decoration pattern has actually been measured by the most recent snap of the spectrophotometric data. When the vision system determines that the spectrophotometer or spectrometer was truly aiming at the correct region when it captured its inspection data, it will instruct the system to accept the color measurement and will log the related data and information accordingly. If the correct spot is not measured, the data may simply be discarded or may be kept for other uses.

公开(公告)号：US11169076B2

公开(公告)日：2021-11-09

申请号：US15659610

申请日：2017-07-25

Applicant: CYTEK BIOSCIENCES, INC.

Inventor： Ming Yan ,  Yung-Chieh Hsieh ,  David Vrane ,  Eric Chase

IPC: G01N15/00 ,  G01N21/00 ,  G01J3/00 ,  G01N15/14 ,  G01J1/08 ,  G01J3/02 ,  G01J3/36 ,  G01N21/47 ,  G01J3/12 ,  G01N15/10

Abstract: In one embodiment, a flow cytometer is disclosed having a compact light detection module. The compact light detection module includes an image array with a transparent block, a plurality of micro-mirrors in a row coupled to a first side of the transparent block, and a plurality of filters in a row coupled to a second side of the transparent block opposite the first side. Each of the plurality of filters reflects light to one of the plurality of micro-mirrors and passes light of a differing wavelength range and each of the plurality of micro-mirrors reflects light to one of the plurality of filters, such that incident light into the image array zigzags back and forth between consecutive filters of the plurality of filters and consecutive micro-mirrors of the plurality of micro-mirrors. A radius of curvature of each of the plurality of micro-mirrors images the fiber aperture onto the odd filters and collimates the light beam on the even filters.

公开(公告)号：US20210311230A1

公开(公告)日：2021-10-07

申请号：US17353033

申请日：2021-06-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Mark Anthony DARTY

IPC: G02B5/20 ,  A61B5/00 ,  H04N5/225 ,  H04N5/33 ,  G01J3/02 ,  G01J3/28 ,  G01J3/36 ,  H04N5/238

Abstract: The present disclosure generally relates to hyperspectral spectroscopy, and in particular, to systems, methods and devices enabling a single-sensor hyperspectral imaging device. Hyperspectral (also known as “multispectral”) spectroscopy is an imaging technique that integrates multiples images of an object resolved at different narrow spectral bands (i.e., narrow ranges of wavelengths) into a single data structure, referred to as a three-dimensional hyperspectral data cube. Data provided by hyperspectral spectroscopy allow for the identification of individual components of a complex composition through the recognition of spectral signatures of individual components within the three-dimensional hyperspectral data cube.

公开(公告)号：US11067449B2

公开(公告)日：2021-07-20

申请号：US17013545

申请日：2020-09-05

Applicant: The Johns Hopkins University

Inventor： Jorge I. Nunez Sanchez ,  Rachel L. Klima ,  Scott L. Murchie ,  Seppo J. Lehtonen ,  John D. Boldt ,  Jacob M. Greenberg ,  Bryan J. Maas ,  Kyle L. Anderson ,  Trevor W. Palmer ,  Heidi E. Warriner

IPC: G01J3/02 ,  G01J3/28 ,  G01J3/36

Abstract: A multispectral imager includes processing circuitry, an illumination assembly, a detector assembly, and a focusing assembly. The illumination assembly includes an array of illumination elements controlled by the processing circuitry to illuminate a scene. The detector assembly includes a detector array controlled by the processing circuitry to capture images from the scene at different wavelengths. The focusing assembly includes a lens and is controlled by the processing circuitry to adjust a focal point for the detector array. The processing circuitry generates and processes the images from the scene, taken at different wavelengths and focal points, combines the images to form a multispectral image cube for the scene, and determines a composition of an object within the scene based on a spectral profile of the multispectral image cube.

公开(公告)号：US20210181099A1

公开(公告)日：2021-06-17

申请号：US17249124

申请日：2021-02-22

Applicant: REBELLION PHOTONICS, INC.

Inventor： Robert Timothy KESTER ,  Ohad Israel BALILA

IPC: G01N21/3504 ,  G01J3/36 ,  G01J3/02 ,  G01N33/00 ,  G01M3/38 ,  G01J3/28

Abstract: A spectral imaging system configured to obtain spectral measurements in a plurality of spectral regions is described herein. The spectral imaging system comprises at least one optical detecting unit having a spectral response corresponding to a plurality of absorption peaks of a target chemical species. In an embodiment, the optical detecting unit may comprise an optical detector array, and one or more optical filters configured to selectively pass light in a spectral range, wherein a convolution of the responsivity of the optical detector array and the transmission spectrum of the one or more optical filters has a first peak in mid-wave infrared spectral region between 3-4 microns corresponding to a first absorption peak of methane and a second peak in a long-wave infrared spectral region between 6-8 microns corresponding to a second absorption peak of methane.

公开(公告)号：US11022545B2

公开(公告)日：2021-06-01

申请号：US15176480

申请日：2016-06-08

Applicant: Konica Minolta Laboratory U.S.A., Inc.

Inventor： Leiming Wang ,  Po-Chieh Hung

IPC: G01N21/3504 ,  G01J3/42 ,  G01N33/00 ,  G01N33/22 ,  G01J3/02 ,  G01J3/36 ,  G01J3/12 ,  G01J3/28 ,  G01N33/24

Abstract: A system and method for multi-spectral gas concentration analysis that includes using a library of multiple sets of optimized spectral sensitivities prepared in advance, and a multi-spectral IR gas analyzer tuned to a set of optimized spectral sensitivity. The multi-spectral IR gas analyzer measures spectral absorption of gas using one or more different sets of optimized spectral sensitivities.

公开(公告)号：US10996168B2

公开(公告)日：2021-05-04

申请号：US15586542

申请日：2017-05-04

Applicant: HORIBA INSTRUMENTS INCORPORATED ,  HORIBA ADVANCED TECHNO CO., LTD.

Inventor： Adam Matthew Gilmore

IPC: G01J3/42 ,  G01J3/443 ,  G01N21/64 ,  C02F1/00 ,  G01N33/18 ,  C02F5/02 ,  C02F1/52 ,  G01N21/27 ,  G01J3/36 ,  G01J3/44

Abstract: A computer-implemented method includes controlling an instrument to measure a fluorescence emission spectrum of a sample including a first peak emission wavelength and at least a second peak emission wavelength, emitted in response to an excitation wavelength and controlling the instrument to measure an absorbance obtained at the excitation wavelength of the sample. The method may include determining, using the computer, a ratio of the measurements at either the second peak emission wavelength, or a sum of measurements at a plurality of peak emission wavelengths including at least the first peak emission wavelength and the second peak emission wavelength, to the first peak emission wavelength, and calculating, using the computer, a value for a quality parameter based on a combination of at least the ratio and the absorbance measurement. The method may include controlling an associated process based on the quality parameter.

公开(公告)号：US10955292B2

公开(公告)日：2021-03-23

申请号：US16307686

申请日：2017-06-12

Applicant: BOMILL AB

Inventor： Bo Löfqvist ,  Per Horvath

IPC: G01J3/10 ,  B07C5/34 ,  G01J3/28 ,  G01J3/36 ,  G01J3/02 ,  G01N21/31 ,  G01J3/32 ,  G01N21/85

Abstract: A detector system is disclosed herein that includes a plurality of light guides. Each light guide is guiding incoming light from a respective object in use, wherein the incoming light is provided by means of an illuminating means. The detector system comprises diffracting means for diffracting the incoming light in different wavelength ranges, at least one focuser for projecting the incoming light exiting the light guides onto the diffracting means, a detector having a detector area for receiving the diffracted light from the plurality of Sight guides, and a control unit. These are arranged to pulsate incoming light via only one light guide at a time based on a pulse timing parameter, and record a spectrum of light diffracted from each light guide and detected by the detector based on the pulse timing parameter.

公开(公告)号：US20210058569A1

公开(公告)日：2021-02-25

申请号：US16844908

申请日：2020-04-09

Applicant: Hypermed Imaging, Inc.

Inventor： Mark Anthony Darty ,  Michael Tilleman ,  Peter Meenen ,  Dmitry Yudovsky

IPC: H04N5/33 ,  G01J3/02 ,  G01J3/28 ,  H04N5/235 ,  H04N5/225 ,  G01J3/10 ,  G01J3/36

Abstract: Provided are methods and systems for concurrent imaging at multiple wavelengths. In one aspect, a hyperspectral/multispectral imaging device includes a lens configured to receive light backscattered by an object, a plurality of photo-sensors, a plurality of bandpass filters covering respective photo-sensors, where each bandpass filter is configured to allow a different respective spectral band to pass through the filter, and a plurality of beam splitters in optical communication with the lens and the photo-sensors, where each beam splitter splits the light received by the lens into a plurality of optical paths, each path configured to direct light to a corresponding photo-sensor through the bandpass filter corresponding to the respective photo-sensor.