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：US11885609B2

公开(公告)日：2024-01-30

申请号：US17532308

申请日：2021-11-22

Applicant: Wojciech Jan Walecki

Inventor： Wojciech Jan Walecki

IPC: G01B11/06 ,  G01J3/42 ,  G01J3/02

CPC classification number: G01B11/06 ,  G01J3/0218 ,  G01J3/42

Abstract: The invention describes a metrology system allowing for the reduction of the errors caused by vibration of the production floor and allowing for measurements of the thickness of wafers in motion. This is accomplished by performing simultaneous measurements of spectra containing interference signals containing distance information using a plurality of probes positioned on both sides of the measured wafer on the same detector at the same time or by means of plurality of synchronized detectors. System is also able to measure thickness of the individual optically accessible layers present in the sample.

公开(公告)号：US11879779B2

公开(公告)日：2024-01-23

申请号：US17623469

申请日：2020-06-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Mark A. Roehrig

IPC: G01J3/42 ,  G01J3/02 ,  G02B5/20 ,  G02B5/22 ,  G01J3/36 ,  G02B5/28 ,  G01J1/58 ,  G01N21/31 ,  G01J3/12

CPC classification number: G01J3/42 ,  G01J1/58 ,  G01J3/0224 ,  G01J3/36 ,  G01N21/31 ,  G02B5/20 ,  G02B5/201 ,  G02B5/22 ,  G02B5/223 ,  G02B5/28 ,  G01J2003/1213

Abstract: An optical system (150) is disclosed and includes an optical sensor (154), a plurality of photosensitive pixels (178) disposed on the optical sensor, a wavelength-selective optical filter (158) in optical communication with the photosensitive pixels, the wavelength-selective optical filter being disposed remotely from the optical sensor, and a plurality of spatially-variant areas (220, 224, 228, 232) disposed in the optical filter, at least one area of the plurality of spatially-variant areas including a downconverter (400, 500).

公开(公告)号：US20230417597A1

公开(公告)日：2023-12-28

申请号：US17849411

申请日：2022-06-24

Applicant: ABB Schweiz AG

Inventor： François Tanguay ,  Bertrand Simon Lanher ,  John Brian Leen

IPC: G01J3/42 ,  G01N21/39 ,  G01N21/3504

CPC classification number: G01J3/42 ,  G01N21/39 ,  G01N21/3504 ,  G01N2021/391

Abstract: A laser absorption spectrometry system for gas measurement is provided. The system includes an integrated cavity output spectroscopy (ICOS) assembly including a gas cell. The gas cell includes a cell body defining an optical cavity and an input mirror and an output mirror positioned in the optical cavity. The assembly further includes a tunable diode laser configured to emit laser light, a collimator positioned in an optical path between the tunable diode laser and the gas cell, and a detector arranged to measure laser light exiting the optical cavity. The collimator includes at least one of a reflective collimation mirror or a gradient index (GRN) lens.

公开(公告)号：US11852531B2

公开(公告)日：2023-12-26

申请号：US17663256

申请日：2022-05-13

Applicant: VIAVI Solutions Inc.

Inventor： William D. Houck ,  Valton Smith

IPC: G01J3/28 ,  G01J3/02 ,  G01S17/08 ,  G01J3/42

CPC classification number: G01J3/027 ,  G01J3/0229 ,  G01J3/42 ,  G01S17/08

Abstract: A device may determine a time-of-flight measurement by performing a sample of a sensor based on light received via at least one first spectral filter, wherein the at least one first spectral filter is associated with a spectral range for a time-of-flight measurement; determine that a condition is satisfied with regard to the time-of-flight measurement, wherein the condition relates to an orientation or a position of the sensor or the sensor device relative to a measurement target; trigger a spectrometry measurement to be performed based on determining that the condition is satisfied with regard to the time-of-flight measurement; and perform, based on light received via at least one second spectral filter and by performing a sample of the sensor, the spectrometry measurement for the measurement target based on the condition being satisfied with regard to the time-of-flight measurement.

公开(公告)号：US11846619B2

公开(公告)日：2023-12-19

申请号：US17652337

申请日：2022-02-24

Applicant: REBELLION PHOTONICS, INC.

Inventor： Robert Timothy Kester ,  Nathan Adrian Hagen

IPC: G01N33/00 ,  H04N5/33 ,  G01N21/3504 ,  G01J5/00 ,  G01J3/28 ,  G01J3/32 ,  G01J3/36 ,  G01J3/02 ,  G01J5/0806 ,  H04N17/00 ,  G01J5/60 ,  G01J5/08 ,  G01J3/42 ,  G01J5/53 ,  G01J5/0808 ,  G01J3/12

CPC classification number: G01N33/0044 ,  G01J3/021 ,  G01J3/0208 ,  G01J3/0286 ,  G01J3/2803 ,  G01J3/2823 ,  G01J3/32 ,  G01J3/36 ,  G01J3/42 ,  G01J5/0014 ,  G01J5/0806 ,  G01J5/0808 ,  G01J5/0896 ,  G01J5/53 ,  G01J5/602 ,  G01N21/3504 ,  H04N5/33 ,  H04N17/002 ,  G01J2003/1247 ,  G01J2003/2826 ,  G01J2003/2869 ,  G01J2005/0077 ,  G01J2005/604 ,  G01N2021/3531

Abstract: Various embodiments disclosed herein describe an infrared (IR) imaging system for detecting a gas. The imaging system can include an optical filter that selectively passes light having a wavelength in a range of 1585 nm to 1595 nm while attenuating light at wavelengths above 1600 nm and below 1580 nm. The system can include an optical detector array sensitive to light having a wavelength of 1590 that is positioned rear of the optical filter.

公开(公告)号：US20230314213A1

公开(公告)日：2023-10-05

申请号：US17657233

申请日：2022-03-30

Applicant: VIAVI Solutions Inc.

Inventor： William D. HOUCK ,  Fred VAN MILLIGEN

IPC: G01J3/02 ,  G01J3/42 ,  G02B5/20

CPC classification number: G01J3/0205 ,  G01J3/42 ,  G02B5/201 ,  G01J2003/1213

Abstract: A concealment component for an optical sensor device includes an optical filter and one or more diffusive optical structures. The one or more diffusive optical structures are configured to distribute light in a diffused pattern on an input surface of the optical filter. The optical filter is configured to pass a first set of light beams, of the light distributed in the diffused pattern on the input surface of the optical filter, that are associated with a particular wavelength range, and prevent a second set of light beams, of the light distributed in the diffused pattern on the input surface of the optical filter, that are not associated with the particular wavelength range, from passing. Preventing the second set of light beams from passing is to cause the second set of light beams to be directed away from or absorbed by the concealment component in a concealment pattern.

公开(公告)号：US11774355B1

公开(公告)日：2023-10-03

申请号：US17161814

申请日：2021-01-29

Applicant: United States of America as represented by the Administrator of NASA

Inventor： Shahid Aslam ,  Gerard Quilligan ,  Nicolas Gorius ,  Conor Nixon

IPC: G01N21/3504 ,  G08B21/14 ,  G01J3/42

CPC classification number: G01N21/3504 ,  G01J3/42 ,  G08B21/14 ,  G01J2003/421

Abstract: A methane alert station for detecting methane gas in an environment. The methane alert station comprises a casing, at least one window opening formed in the casing, a infrared transmitting window disposed in the at least one window opening, an infrared light source disposed adjacent to the infrared transmitting window, a hyperbolic mirror disposed in the casing coaxially with a central axis, a Winston cone disposed coaxially with the central axis and spaced from the hyperbolic mirror along the central axis, and a filter-detector arranged coaxially with the central axis and so that the Winston cone is disposed between the hyperbolic mirror and the filter-detector. The infrared light source is configured to emit an outgoing infrared light from the casing. The filter-detector is configured to measure a methane gas concentration in the environment by measuring an absorption of infrared radiation of the methane gas at specific wavelength bandwidths.

公开(公告)号：US11761887B2

公开(公告)日：2023-09-19

申请号：US17418223

申请日：2020-04-23

Applicant: NATIONAL INSTITUTE OF METROLOGY, CHINA

Inventor： Zejian Huang ,  Xiang Fang ,  Xinhua Dai ,  You Jiang

IPC: G01N21/31 ,  G01N27/62 ,  H01J49/26 ,  G01J3/42 ,  G01N21/39

CPC classification number: G01N21/31 ,  G01J3/42 ,  G01N27/62 ,  H01J49/26 ,  G01N21/39 ,  G01N2021/391

Abstract: An apparatus and a method for quantitative detection of gases are provided. The apparatus for quantitative detection of gases includes: a cavity ring-down spectroscopy device configured to quantitatively detect any characteristic gas in gases to be detected; a sample processing device disposed in a downstream of the cavity ring-down spectroscopy device and connected to the cavity ring-down spectroscopy device; and a mass spectrometry device disposed in a downstream of the sample processing device and configured to detect all the gases to be detected. Quantitative analysis of any variety of gases may be achieved without using standard gas in the technical solution proposed by the present application. Since no standard gas is required, the technology has significantly increased flexibility, and can be used for routine laboratory testing, for online analysis at industrial sites, as well as detection and analysis in environmental protection, national defense, aviation, aerospace, military and other fields.

公开(公告)号：US11754844B2

公开(公告)日：2023-09-12

申请号：US17896516

申请日：2022-08-26

Applicant: Magic Leap, Inc.

Inventor： Nicole Elizabeth Samec ,  Nastasja U. Robaina ,  Adrian Kaehler ,  Mark Baerenrodt ,  Eric Baerenrodt ,  Christopher M. Harrises ,  Tammy Sherri Powers

IPC: G02B27/01 ,  G01J3/02 ,  G01J3/42 ,  A61B5/1455 ,  A61B5/11 ,  A61B5/00 ,  G06F3/03 ,  G01J3/10 ,  G06F3/01 ,  G01J3/28 ,  G01J3/427 ,  G01N21/359 ,  G01N33/483 ,  F21V8/00 ,  G02B27/00

CPC classification number: G02B27/0172 ,  A61B5/0075 ,  A61B5/1114 ,  A61B5/1121 ,  A61B5/14551 ,  A61B5/6803 ,  A61B5/743 ,  A61B5/744 ,  G01J3/0248 ,  G01J3/0256 ,  G01J3/0264 ,  G01J3/10 ,  G01J3/108 ,  G01J3/2823 ,  G01J3/42 ,  G01J3/427 ,  G01N21/359 ,  G01N33/483 ,  G02B6/0076 ,  G02B27/017 ,  G06F3/011 ,  G06F3/013 ,  G06F3/0304 ,  G01J2003/106 ,  G01J2003/2826 ,  G01J2003/425 ,  G02B27/0093 ,  G02B2027/014 ,  G02B2027/0125 ,  G02B2027/0138 ,  G02B2027/0187 ,  G06F3/012

Abstract: In some embodiments, a system comprises a head-mounted frame removably coupleable to the user's head; one or more light sources coupled to the head-mounted frame and configured to emit light with at least two different wavelengths toward a target object in an irradiation field of view of the light sources; one or more electromagnetic radiation detectors coupled to the head-mounted member and configured to receive light reflected after encountering the target object; and a controller operatively coupled to the one or more light sources and detectors and configured to determine and display an output indicating the identity or property of the target object as determined by the light properties measured by the detectors in relation to the light properties emitted by the light sources.