公开(公告)号：US20220113191A1

公开(公告)日：2022-04-14

申请号：US17352327

申请日：2021-06-20

Applicant: Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences

Inventor： Leiran WANG ,  Qibing SUN ,  Lei SHI ,  Wenfu ZHANG

IPC: G01J3/433 ,  G02F1/35 ,  G01J3/02 ,  G01J3/10 ,  G02F1/355

Abstract: An ultrahigh-resolution mid-infrared (MIR) dual-comb spectroscopy (DCS) measurement device includes a pump unit, a microring resonator (MRR) unit, a modulation unit, a splitting unit, a testing unit, a signal detection unit, a power balance unit, a reference detection unit and a spectral analysis unit. The measurement method includes: adjusting the laser emitted by the pump unit to the MRR unit; adjusting the modulation unit and performing dual-frequency modulation; generating two sets of MIR optical frequency combs (OFCs) with different repetition rates and splitting the MIR OFCs into the test light and the reference light; performing photoelectric conversion on the test light and injecting the test light to the spectral analysis unit; performing photoelectric conversion on the reference light and injecting the reference light to the spectral analysis unit; and performing Fourier transformation and data processing on test results to obtain absorption spectrum of the to-be-tested sample.

公开(公告)号：US20220113189A1

公开(公告)日：2022-04-14

申请号：US17428435

申请日：2020-01-20

Applicant: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION

Inventor： Sucbei MOON

IPC: G01J3/28 ,  G01J3/44 ,  G01J3/10

Abstract: The present invention provides a time-resolved single-photon counting apparatus, including an excitation light source for generating pulsed excitation light, a specimen optics for collecting an optical signal caused by irradiating the pulsed excitation light to a specimen, a photoelectric converter for photoelectrically converting the optical signal to generate an analog single-photon signal, an analog-to-digital (AD) signal converter for sampling the analog single-photon signal to convert the same into a digital single-photon signal, a digital photon-discrimination and timing detector for generating a photon-discrimination signal by discriminating the single-photon property of the digital single-photon signal to count a pulse time point of the digital single-photon signal to generate a delay time signal having delay time information, and a time-signal processor for counting valid single-photon detection events according to the delay time with reference to the photon-discrimination signal.

公开(公告)号：US20220074791A1

公开(公告)日：2022-03-10

申请号：US17400525

申请日：2021-08-12

Applicant: VERIFOOD, LTD.

Inventor： Damian GOLDRING ,  Dror SHARON ,  Guy BRODETZKI ,  Amit RUF ,  Menahem KAPLAN ,  Sagee ROSEN ,  Omer KEILAF ,  Uri KINROT ,  Kai ENGELHARDT ,  Ittai NIR ,  Nitzan WAISBERG ,  Dana COHEN BAR-ON

IPC: G01J3/02 ,  G01J3/10 ,  G01J5/10 ,  H04M1/72406 ,  H04M1/72412 ,  G01N21/31 ,  G01N21/25 ,  G08C17/02

Abstract: A hand held spectrometer is used to illuminate the object and measure the one or more spectra. The spectral data of the object can be used to determine one or more attributes of the object. In many embodiments, the spectrometer is coupled to a database of spectral information that can be used to determine the attributes of the object. The spectrometer system may comprise a hand held communication device coupled to a spectrometer, in which the user can input and receive data related to the measured object with the hand held communication device. The embodiments disclosed herein allow many users to share object data with many people, in order to provide many people with actionable intelligence in response to spectral data.

公开(公告)号：US11262301B1

公开(公告)日：2022-03-01

申请号：US17013469

申请日：2020-09-04

Applicant: Photon Systems, Inc.

Inventor： William F. Hug ,  Rohit Bhartia ,  Ray D. Reid ,  Arthur L. Lane

IPC: G01N21/64 ,  G01J3/10 ,  G01J3/36 ,  G01J3/44 ,  G01N21/88 ,  G01N27/447 ,  G01N33/00 ,  G01N21/65

Abstract: Naphthalene, benzene, toluene, xylene, and other volatile organic compounds VOCs have been identified as serious health hazards. Embodiments of the invention are directed to methods and apparatus for near-real-time in-situ detection and accumulated dose measurement of exposure to naphthalene vapor and other hazardous gaseous VOCs. The methods and apparatus employ excitation of fluorophors native or endogenous to compounds of interest using light sources emitting in the ultraviolet below 300 nm and measurement of native fluorescence emissions in distinct wavebands above the excitation wavelength. The apparatus of some embodiments are cell-phone-sized sensor/dosimeter “badges” to be worn by personnel potentially exposed to hazardous VOCs. The badge sensor of some embodiments provides both real time detection and data logging of exposure to naphthalene or other VOCs of interest from which both instantaneous and accumulated dose can be determined.

公开(公告)号：US11262299B2

公开(公告)日：2022-03-01

申请号：US15630643

申请日：2017-06-22

Applicant: Ghassan S. Kassab ,  Ali Dabiri

Inventor： Ghassan S. Kassab ,  Ali Dabiri

IPC: G01J5/02 ,  G01N21/3586 ,  G01N21/39 ,  G01J3/42 ,  A61B5/0507 ,  G01J3/10 ,  G01V3/12 ,  G01N21/3563 ,  A61B5/00 ,  A61B5/02 ,  G01N21/3581 ,  A61B5/0265

Abstract: Method and apparatus for non-invasive condition detection using an all fiber portable terahertz imaging system. An imaging system of the present disclosure may comprise a control module comprising a femtosecond pulsed laser configured to generate an output light beam, a dispersion compensation unit configured to receive the output light beam and transmit a laser light beam generated based upon the output light beam, a beam splitter configured to receive the laser light beam and divide the laser light beam into a pump light beam and a reference light beam; and a rapid scanning optical delay line configured to receive the pump light beam and transmit an exit light beam generated based upon the pump light beam, a patch probe comprising a transmitter module, an optics lens, and a detector module.

公开(公告)号：US11237052B2

公开(公告)日：2022-02-01

申请号：US16956604

申请日：2018-12-10

Applicant: INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE

Inventor： François Legaré ,  Bruno Schmidt

IPC: G01J3/40 ,  G01J3/10 ,  G01J1/42 ,  G01J3/02

Abstract: A system and a method for infrared spectrometry, the method comprising multiphoton absorption with a material positioned in the Fourier plane of a 2f setup, the material being one of: i) a visible light sensitive, high band gap material and ii) an IR sensitive material. The system comprises one of: i) a visible light sensitive, high band gap material and ii) an IR sensitive material, positioned in the Fourier plane of a 2f setup.

公开(公告)号：US11233373B2

公开(公告)日：2022-01-25

申请号：US16480071

申请日：2018-01-18

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Peter Brick ,  Hubert Halbritter

IPC: H01S5/00 ,  G01J3/10 ,  G01J3/28 ,  H01S5/40 ,  H01S5/42

Abstract: A radiation-emitting semiconductor arrangement includes at least one semiconductor body having an active region that generates a primary radiation, and includes a radiation conversion element, wherein the radiation conversion element converts the primary radiation at least partially into a secondary radiation during operation of the semiconductor arrangement, the radiation conversion element emits the secondary radiation at a narrow angle, the radiation conversion element emits the secondary radiation into a projected spatial angle of not more than π/5, and the semiconductor arrangement includes an optical deflector movable during operation of the semiconductor arrangement.

公开(公告)号：US11231365B2

公开(公告)日：2022-01-25

申请号：US16524001

申请日：2019-07-26

Applicant: Hanwha Systems Co., Ltd. ,  KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Bong Jun Choi ,  Ho Jin Hyun ,  Jong Hoo Park ,  Dae Kyeong Kang

IPC: G01N21/552 ,  G01N21/59 ,  H04N5/33 ,  G01N21/35 ,  H01L27/146 ,  G01J3/10

Abstract: Provided are an apparatus and a method for infrared imaging, more particularly, an apparatus and a method for infrared imaging, which receive infrared light, emitted from a target, and output the received infrared light as an image. An infrared imaging apparatus, in accordance with an exemplary embodiment, receives infrared light, emitted from a target, and outputs the received infrared light as an image. The infrared imaging apparatus includes: a reaction unit having physical properties changing in response to the received infrared light; a light source unit for generating measurement light irradiated toward the reaction unit; and an imaging unit for detecting the measurement light with the light quantity thereof changing depending on a change in the physical properties of the reaction unit and outputting the detected measurement light as an image.

公开(公告)号：US20220018836A1

公开(公告)日：2022-01-20

申请号：US17344202

申请日：2021-06-10

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Nitin Nitin ,  Mahmoudreza Ovissipour

IPC: G01N33/569 ,  G01N21/65 ,  G01J3/44 ,  G01J3/10

Abstract: Systems, surrogates, indicators and methods for rapid assessment of sanitation processes are provided. Non-living and non-toxic surrogates applied to a platform or encapsulated in a biological material mounted to a platform are exposed to a sanitation process to be evaluated. Responses to sanitation are measured and quantified using FTIR and chemometrics including principal component analysis (PCA), partial least squares regression (PLSR), loading plots and predictive models. An artificial leaf platform with one or more types of surrogates on one surface and an anchor such as an adhesive film on a second surface is described. Surrogate types include nucleic acid, phage, yeast and algae surrogates. Surrogates may also be attached directly or through a polymer to the platform surface. Surrogates may also be encapsulated or attached to the outside of a biological carrier such as a yeast cell that is free or coupled to the platform.

公开(公告)号：US11226232B2

公开(公告)日：2022-01-18

申请号：US16651060

申请日：2018-09-26

Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)

Inventor： Dragos Constantin ,  Simon De Visscher

IPC: G01J3/10 ,  G01J3/02 ,  G01J3/18 ,  G01J3/26 ,  G01J3/28 ,  G01J3/51 ,  G01J3/12

Abstract: A Multichromatic Calibration (MC) method of at least a spectral sensor which is one of a list comprising at least a spectrometer, a multispectral sensor, a hyperspectral sensor, a spectral camera, a color camera. The method comprises a. generating a plurality of different multichromatic spectra, wherein i. a spectrum from the plurality of different multichromatic spectra contains light intensity measurable by the at least one spectral sensor and by a reference spectral device, and ii. a spectrum from the plurality of different multichromatic spectra contains light centered around at least two different wavelengths and is configured to be integrated during an exposure time of a single measurement from any of the at least one spectral sensor or the reference spectral device; b. measuring each multichromatic spectrum of the plurality of different multichromatic spectra with the reference spectral device and the at least one spectral sensor; and from all data of the measured multichromatic spectra, compute a transfer function which relates a response of the at least one spectral sensor to a corresponding response of the reference spectral device, without measuring the spectral response of the at least one spectral sensor.