公开(公告)号：US20210338101A1

公开(公告)日：2021-11-04

申请号：US17236994

申请日：2021-04-21

Applicant: HyperSpectral APD, LLC

Inventor： David M. Palacios ,  Harry Hopper

IPC: A61B5/08 ,  A61B10/00 ,  G01N21/359 ,  G01N1/42 ,  G01N33/497 ,  G01N21/3504 ,  G01J3/45 ,  A61B5/00 ,  G01N21/25 ,  G01J3/18

Abstract: A method comprising at least one light source configured to generate a light of at least one wavelength and project the light over an optical path, a sample device, the device containing a sample obtained from exhalation of a person, a vortex mask configured to receive the light after the light passes through at least a portion of the sample device, the vortex mask including a series of concentric circles etched in a substrate, the vortex mask configured to provide destructive interference of coherent light received from the at least one light source, a detector configured to detect and measure wavelength intensities from the light in the optical path, the wavelength intensities being impacted by the light passing through the sample, the detector receiving the light that remained after passing through the vortex mask, and a processor configured to provide measurement results based on the wavelength intensities.

公开(公告)号：US11163017B2

公开(公告)日：2021-11-02

申请号：US16662655

申请日：2019-10-24

Applicant: Palo Alto Research Center Incorporated

Inventor： Saman Mostafavi ,  Hong Yu ,  Ajay Raghavan ,  Peter Kiesel

IPC: G01R29/20 ,  G01R31/62 ,  G01J3/18 ,  G01L1/24 ,  H01F27/08 ,  H04B3/46 ,  G01N17/00 ,  H01F27/02 ,  G01R19/25 ,  G01R35/02 ,  G01R31/72 ,  G01R31/52 ,  G01R1/28 ,  G01R31/34 ,  G01R15/20

Abstract: A monitoring system includes an array of optical sensors disposed within a transformer tank. Each optical sensor is configured to have an optical output that changes in response to a temperature within the transformer tank. An analyzer is coupled to the array of optical sensors. The analyzer is configured to determine a sensed temperature distribution based on the sensed temperature. The sensed temperature distribution is compared to an expected distribution. Exterior contamination of the transformer tank is detected based on the comparison.

公开(公告)号：US20210294034A1

公开(公告)日：2021-09-23

申请号：US16326504

申请日：2017-08-18

Applicant: IMEC VZW ,  Samsung Electronics Co. Ltd.

Inventor： Tom Claes

IPC: G02B6/122 ,  G01J3/02 ,  G01J3/18

Abstract: An integrated photonic device may include an image detector that comprises an array of pixels. The device may further include an integrated waveguide and a light coupler comprising a light receiving part optically coupled to the integrated waveguide for receiving a light signal. The light coupler may be adapted for coupling a same predetermined spectral band of the light signal to each of a plurality of pixels of the image detector. The light coupler may include a tapered portion, in which the light coupler tapers outward in a direction of propagation, and an end part comprising an elliptically shaped back reflector for reflecting light propagating along the direction of propagation back through the light coupler toward the integrated waveguide.

公开(公告)号：US11125689B2

公开(公告)日：2021-09-21

申请号：US16509613

申请日：2019-07-12

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 ,  H01S5/06 ,  H01S5/062

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：US11125674B2

公开(公告)日：2021-09-21

申请号：US16591453

申请日：2019-10-02

Applicant: Becton, Dickinson and Company

Inventor： Collin A. Rich

IPC: G01N21/59 ,  G01N15/14 ,  G16B5/00 ,  G16B45/00 ,  G16B99/00 ,  G01J3/18 ,  G01J3/36 ,  G01J3/02 ,  G01J3/28 ,  G06M11/02

Abstract: Systems in a flow cytometer having an interrogation zone and illumination impinging the interrogation zone include: a lens subsystem including a collimating element that collimates light from the interrogation zone, a light dispersion element that disperses collimated light into a light spectrum, and a focusing lens that focuses the light spectrum onto an array of adjacent detection points; a detector array, including semiconductor detector devices, that collectively detects a full spectral range of input light signals, in which each detector device detects a subset spectral range of the full spectral range of light signals; and a user interface that enables a user to create a set of virtual detector channels by grouping detectors in the detector array, such that each virtual detector channel corresponds to a detector group and has a virtual detector channel range including the sum of subset spectral ranges of the detectors in the corresponding detector group.

公开(公告)号：US20210271008A1

公开(公告)日：2021-09-02

申请号：US17258818

申请日：2019-04-24

Applicant: HITACHI HIGH-TECH CORPORATION

Inventor： Takanori AONO ,  Yoshisada EBATA ,  Kenta YAEGASHI ,  Shigeru MATSUI

IPC: G02B5/18 ,  G02B27/00 ,  G01J3/18

Abstract: The present invention provides a concave diffraction grating capable of improved diffraction efficiency by suppressing spherical aberration. The concave diffraction grating is a concave diffraction grating 2 for dispersing and focusing light and comprises sawtooth grating grooves 21 on a concave substrate 24, with the sawtooth grating grooves 21 being unequally spaced. The concave diffraction grating 2 for dispersing and focusing light is formed by preparing a planar diffraction grating with a sawtooth shape which is formed on a planar substrate by photo-lithography and etching or machining and which forms unequally spaced grating grooves 21, deforming and mounting the planar diffraction grating along a fixed convex substrate to obtain a mold of a concave diffraction grating, and transferring the mold of the concave diffraction grating to the surface of a metal or a resin.

公开(公告)号：US11092485B2

公开(公告)日：2021-08-17

申请号：US16541917

申请日：2019-08-15

Applicant: PerkinElmer Health Sciences, Inc.

Inventor： Mahsa Farsad ,  David Aikens

IPC: G01J3/28 ,  G01J3/02 ,  G01J3/18 ,  G02B23/02 ,  G01J3/12

Abstract: A spectrometer with an unobstructed, Schmidt reflector is described. The spectrometer may include a Schmidt corrector and a dispersive element as separate components. Alternatively, the Schmidt corrector and dispersive element may be combined into a single optical component. The spectrometer may further include a field-flattener lens.

公开(公告)号：US20210231499A1

公开(公告)日：2021-07-29

申请号：US17054157

申请日：2020-03-25

Applicant: MKS TECHNOLOGY, INC. (D/B/A SNOWY RANGE INSTRUMENT

Inventor： Quaid Vohra ,  Celestin Zemtsop ,  Mark Watson

IPC: G01J3/44 ,  G01J3/02 ,  G01J3/10 ,  G01J3/28 ,  G01J3/18

Abstract: A multi-dispersive spectrometer is provided in which the spectrometer comprises an an optical system configured to direct an excitation signal from an excitation light source toward a sample, receive a spectroscopy signal from the sample, and direct the spectroscopy signal toward the detector. The optical system comprises a movable optical component adapted to move the spectroscopy signal relative to at least one sensor of the detector and the detector is adapted to detect a plurality of discrete shifted spectroscopy signals. A method of obtaining a Raman spectrum from a sample is also provided. The method comprises directing an excitation signal from an excitation light source toward a sample; receiving a spectroscopy signal from the sample; and directing the spectroscopy signal toward a detector, wherein the spectroscopy signal is moved relative to at least one sensor of the detector to provide a plurality of discrete shifted spectroscopy signals.

公开(公告)号：US11060912B2

公开(公告)日：2021-07-13

申请号：US16705694

申请日：2019-12-06

Applicant: University of Maryland, College Park

Inventor： Giuliano Scarcelli ,  Antonio Fiore

IPC: G01J3/18 ,  G01J3/02 ,  G01J3/44 ,  G01J3/12

Abstract: A multi-stage parallel spectroscopy system has a plurality of dispersion stages, with the output of one dispersion stage serving as input to the next dispersion stage. Each dispersion stage separates input radiation into respective spectral components along a respective dispersion axis. In embodiments, the dispersion axes for the dispersion stages are substantially parallel to each other. Thus, the disclosed systems may be considered single-axis parallel spectroscopy configurations, in contrast to cross-axis parallel spectroscopy configurations. An optical system disposed in an optical path between dispersion stages can spatially filter a set of wavelengths from the input to the next dispersion stage to increase spectral extinction without sacrificing throughput or parallel operation. In some embodiments, the same dispersive element provides the spectral separation for multiple dispersion stages, by way of a recirculating optical system that redirects the spectral output from the dispersive element back to its input.

公开(公告)号：US11054308B2

公开(公告)日：2021-07-06

申请号：US16616151

申请日：2018-04-24

Applicant: Konica Minolta, Inc.

Inventor： Takashi Kawasaki ,  Hidehiko Fujii ,  Katsutoshi Tsurutani

IPC: G01J3/10 ,  G01J3/18

Abstract: Observation light can be applied to a position for measurement without providing large space in a spectrophotometer, and the position for measurement can be easily known. A slit is disposed at a position optically conjugate with the position for measurement in the spectrophotometer. Light from an object to be measured passes through the slit, travels along a measurement optical path, and is subject to wavelength dispersion by a wavelength dispersing element. An observation light source is retracted outside the measurement optical path at the time of measuring a spectral spectrum. At the time of observing the position for measurement, the observation light source is inserted into the measurement optical path, and emits observation light toward the slit. Alternatively, light from an object to be measured passes through the slit, and is diffracted by a grating. The observation light source is disposed on an optical path of zeroth light. The observation light source emits observation light toward the grating at the time of observing the position for measurement.