公开(公告)号：US20240410822A1

公开(公告)日：2024-12-12

申请号：US18808482

申请日：2024-08-19

Applicant: Apple Inc.

Inventor： Miikka M. Kangas ,  Mark Alan Arbore ,  David I. Simon ,  Michael J. Bishop ,  James W. Hillendahl ,  Robert Chen

IPC: G01N21/27 ,  G01J3/02 ,  G01J3/32 ,  G01J3/36 ,  G01J3/42 ,  G01J3/433 ,  G01J3/447 ,  G01N21/21 ,  G01N21/35 ,  G01N21/47 ,  G01N21/49

Abstract: This relates to systems and methods for measuring a concentration and type of substance in a sample at a sampling interface. The systems can include a light source, optics, one or more modulators, a reference, a detector, and a controller. The systems and methods disclosed can be capable of accounting for drift originating from the light source, one or more optics, and the detector by sharing one or more components between different measurement light paths. Additionally, the systems can be capable of differentiating between different types of drift and eliminating erroneous measurements due to stray light with the placement of one or more modulators between the light source and the sample or reference. Furthermore, the systems can be capable of detecting the substance along various locations and depths within the sample by mapping a detector pixel and a microoptics to the location and depth in the sample.

公开(公告)号：US12140477B2

公开(公告)日：2024-11-12

申请号：US17044486

申请日：2019-04-01

Applicant: The Regents of the University of California

Inventor： Mona Jarrahi ,  Ning Wang

IPC: G01J3/433 ,  H01Q9/16

Abstract: A system for detecting high-frequency radiation that offers near-quantum-limited sensitivity, broad spectral bandwidth, and high spectral resolution while operating at room temperature. The system can include an antenna assembly configured to receive at least a high-frequency radiation and a substrate comprising a semiconductor material with a contact-semiconductor interface connected to the antenna assembly. The system also includes an optical pump configured to produce an optical beam that has a high-frequency beat frequency, the optical beam contacting the contact-semiconductor interface to create an intermediate frequency signal by combining the optical beam with the high-frequency radiation. The system further includes a detector configured to detect the intermediate frequency and generate at least one report indicating the received, high-frequency radiation.

公开(公告)号：US20240362883A1

公开(公告)日：2024-10-31

申请号：US18751080

申请日：2024-06-21

Applicant: Emcode Photonics LLC

Inventor： Shrenik Deliwala

IPC: G06V10/143 ,  A61B5/00 ,  G01J3/28 ,  G01J3/433 ,  G01N21/25 ,  G06V10/141 ,  A61B5/1455 ,  G01N21/3504 ,  G01N21/95

CPC classification number: G06V10/143 ,  A61B5/0075 ,  G01J3/2823 ,  G01J3/433 ,  G01N21/255 ,  G06V10/141 ,  A61B5/14551 ,  A61B5/742 ,  G01J2003/4334 ,  G01N21/3504 ,  G01N21/9501

Abstract: Modulation-encoded light, using different spectral bin coded light components, can illuminate a stationary or moving (relative) target object or scene. Response signal processing can use information about the respective different time-varying modulation functions, to decode to recover information about a respective response parameter affected by the target object or scene. Electrical or optical modulation encoding can be used. LED-based spectroscopic analysis of a composition of a target (e.g., SpO2, glucose, etc.) can be performed; such can optionally include decoding of encoded optical modulation functions. Baffles or apertures or optics can be used, such as to constrain light provided by particular LEDs. Coded light illumination can be used with a focal plane array light imager receiving response light for inspecting a moving semiconductor or other target. Encoding can use orthogonal functions, such as an RGB illumination sequence, or a sequence of combinations of spectrally contiguous or non-contiguous colors.

公开(公告)号：US12130136B2

公开(公告)日：2024-10-29

申请号：US17707479

申请日：2022-03-29

Applicant: Thorlabs, Inc.

Inventor： Oliver Heckl ,  Jakob Fellinger

IPC: G01S17/34 ,  G01B9/02001 ,  G01J3/433 ,  G01J3/45 ,  G01J3/457 ,  G01S7/48 ,  G01S7/497 ,  G01S17/894 ,  G01J3/28 ,  G01J3/42

CPC classification number: G01B9/02008 ,  G01J3/433 ,  G01J3/45 ,  G01J3/457 ,  G01S7/4808 ,  G01S7/497 ,  G01S17/34 ,  G01S17/894 ,  G01J2003/2879 ,  G01J2003/423 ,  G01J2003/4332

Abstract: A device that uses two intensity modulated frequency combs to measure distances with high precision and high data acquisition rate without any moving parts and without length ambiguity that is inherent conventional ranging based on two frequency combs. A modulation signal having a repetition rate identical to the repetition rate difference between the two combs is used to do a direct time-of-flight length measurement, hence avoiding the given length ambiguity while harvesting the increased precision of the dual-comb approach.

公开(公告)号：US20240328936A1

公开(公告)日：2024-10-03

申请号：US18619884

申请日：2024-03-28

Applicant: Servomex Group Limited

Inventor： Michael Lawson ,  Bahram Alizadeh ,  Martin Lopez ,  Michael Ratcliffe

IPC: G01N21/3504 ,  G01J3/433 ,  G01N21/39

CPC classification number: G01N21/3504 ,  G01J3/433 ,  G01N21/39 ,  G01N2021/399

Abstract: An apparatus for optical gas detection and/or measurement in an absorption spectroscopy system comprising: a gas cell for containing a gas sample or calibration gas with at least one gas exchange port and at least one optical element for allowing transmission of electromagnetic radiation of a desired wavelength range in and out of the gas cell; and at least one source of converging, diverging or collimated electromagnetic radiation for transmitting electromagnetic radiation through a gas sample contained within the gas cell and towards at least one detector; said detector to monitor absorption of electromagnetic radiation for at least one absorption wavelength or wavelength range associated with at least one gas species, by detecting transmitted electromagnetic radiation that is not absorbed; at least one analyser for analysing an output signal from the at least one detector to measure a parameter of at least one gas species within the gas sample, characterised in that at least one dead volume within the spectrometer is filled with a transmissive filler material that reduces or eliminates the presence of at least one undesired gas species.

公开(公告)号：US20240319009A1

公开(公告)日：2024-09-26

申请号：US18232438

申请日：2023-08-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hong-Seok SEO ,  Dong Hoon SONG ,  CHUL HUH

IPC: G01J3/28 ,  G01J3/02 ,  G01J3/433

CPC classification number: G01J3/2823 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/0224 ,  G01J3/4338 ,  G01J2003/2826 ,  G01J2003/423 ,  G01J2003/4334

Abstract: Disclosed is a hyperspectral imaging device, which includes a code generator that generates a code signal including first code information and second code information which are orthogonal to each other, a light transmitter that receives the code signal and generates output light including first modulated light modulated based on the first code information and second modulated light modulated based on the second code information, and a receiver that receives reflected light from which the output light is reflected from a sample and obtains a hyperspectral image based on the reflected light and the code signal, and the first modulated light has a first wavelength band and the second modulated light has a second wavelength band different from the first wavelength band.

公开(公告)号：US11898956B2

公开(公告)日：2024-02-13

申请号：US17432665

申请日：2020-02-21

Applicant: The Trustees of Princeton University

Inventor： Mark Zondlo ,  Lei Tao ,  Da Pan ,  Josh Collins ,  Paul Guiguizian ,  Howard Y. Bell ,  Alice Margaret Sophie Elliott ,  Patrick Minter Killough ,  Bernardus Maria Geertshuis ,  Herie Javier Soto

IPC: G01N21/39 ,  G01J3/42 ,  G01J3/433 ,  G01N21/27 ,  G01N21/552 ,  G01N21/31

CPC classification number: G01N21/39 ,  G01J3/42 ,  G01J3/433 ,  G01N21/274 ,  G01N21/552 ,  G01N2021/3129

Abstract: Disclosed is a spectroscopic device, system, and method for measuring the concentration of one or more molecular species of interest in a gas, liquid or solid sample, where the device may be portable, may be commercially manufactured, and/or may be adapted to existing systems and/or integrated with new systems to provide optical gas sensing for such systems. The disclosed devices, systems, and methods can be particularly useful in monitoring the purity of, e.g., a certain gas species, including determining whether a gas mixture contains certain gas species above a set concentration limit.

公开(公告)号：US11740127B2

公开(公告)日：2023-08-29

申请号：US17481542

申请日：2021-09-22

Applicant: 11887041 Canada Ltd.

Inventor： David Allan Prystupa ,  John Stephen Pacak

IPC: G01J3/433 ,  G01J3/28 ,  G01N21/31

CPC classification number: G01J3/433 ,  G01J3/2846 ,  G01N21/314 ,  G01N2201/1293

Abstract: A method for measuring a property of radiation from different sources such as moving particles or different spatial locations on each particle includes providing a spatial modulator common to all of the sources having a sequence of configurations, each of which configurations causes the radiation flux to pass along paths to respective modulation ports and cycling the common spatial modulator past each of the modulation ports so that the sequence of configurations is applied to each modulation port. The sequence of configurations comprises an ordered array of optical elements on a substrate. In one embodiment, the modulator is arranged in a circle around an axis of rotation of a rotating singulation disk. At least one source is a reference source which has not interacted with the source to be analyzed and the sample and reference sources are compared.

公开(公告)号：US11725987B2

公开(公告)日：2023-08-15

申请号：US17435052

申请日：2020-03-02

Applicant: Spec-Imaging AB

Inventor： Edouard Jean Jacques Berrocal ,  William René Serge Chaze ,  Elias Viktor Kristensson ,  Jérémie Thouakesseh Zoueu

IPC: G01J3/433 ,  G01J3/02 ,  G01N21/31 ,  G01N21/47 ,  G01N21/64

CPC classification number: G01J3/433 ,  G01J3/0229 ,  G01N21/31 ,  G01N21/4738 ,  G01N2021/6463 ,  G01N2201/0635

Abstract: An assembly for measurements of one or more optical parameters of a medium is disclosed. The assembly comprises a light sheet generator, a light intensity modulator, a holder for a sample, and an optical sensor. A method of using the assembly for measuring one or more optical parameters of a medium is also disclosed.

公开(公告)号：US11692900B2

公开(公告)日：2023-07-04

申请号：US17408886

申请日：2021-08-23

Applicant: Bridger Photonics, Inc.

Inventor： Aaron Thomas Kreitinger ,  Michael James Thorpe

IPC: G01M3/18 ,  G01J3/433 ,  G01N21/39 ,  G06V10/30 ,  G01J3/42 ,  G01S17/88

CPC classification number: G01M3/18 ,  G01J3/4338 ,  G01N21/39 ,  G06V10/30 ,  G01J2003/423 ,  G01S17/88

Abstract: Embodiments of the disclosure are drawn to apparatuses and methods for anomalous gas concentration detection. A spectroscopic system, such as a wavelength modulated spectroscopy (WMS) system may measure gas concentrations in a target area. However, noise, such as speckle noise, may interfere with measuring relatively low concentrations of gas, and may lead to false positives. A noise model, which includes a contribution from a speckle noise model, may be used to process data from the spectroscopic system. An adaptive threshold may be applied based on an expected amount of noise. A speckle filter may remove measurements which are outliers based on a measurement of their noise. Plume detection may be used to determine a presence of gas plumes. Each of these processing steps may be associated with a confidence, which may be used to determine an overall confidence in the processed measurements/gas plumes.