公开(公告)号：US20240035891A1

公开(公告)日：2024-02-01

申请号：US18358105

申请日：2023-07-25

Applicant: Ivoclar Vivadent AG

Inventor： Jonas Reinhardt ,  Christian Niedrig

IPC: G01J3/50 ,  G01J3/02 ,  G01J3/12 ,  G01J3/42

CPC classification number: G01J3/508 ,  G01J3/024 ,  G01J3/0275 ,  G01J3/12 ,  G01J3/42 ,  G01J2003/1282

Abstract: A method for spatially resolved color determination, comprising the steps of projecting (S101) a first structured-light pattern having a first wavelength of light onto a dental object;
detecting (S102) a first spatially resolved optical parameter set based on the reflected or remitted first structured-light pattern; projecting (S103) a second structured-light pattern having a second wavelength of light onto the dental object; detecting (S104) a second spatially resolved optical parameter set based on the reflected or remitted second structured-light pattern; and calculating (S105) a third spatially resolved optical parameter set at a third wavelength of light based on the first and second spatially resolved optical parameter sets.

公开(公告)号：US11885684B2

公开(公告)日：2024-01-30

申请号：US17243157

申请日：2021-04-28

Applicant: Massachusetts Institute of Technology

Inventor： Juejun Hu ,  Derek Kita ,  Jerome Michon

IPC: G01J3/44 ,  G01J3/02 ,  G01N21/65 ,  G01J3/10

CPC classification number: G01J3/4406 ,  G01J3/0205 ,  G01J3/0218 ,  G01J3/10 ,  G01N21/65

Abstract: A method of performing Raman spectroscopy can include guiding a Raman pump beam with an optical fiber, where the Raman pump beam inducing fluorescence in the optical fiber. The beam and the fluorescence are coupled to a photonic integrated circuit (PIC) via the fiber. The beam is used to excite a sample in optical communication with the PIC via evanescent coupling and induces Raman scattering in the sample. The Raman scattering is collected via the PIC, and the Raman pump beam as well as the fluorescence is filtered out from the Raman scattering via the PIC.

公开(公告)号：US11885681B2

公开(公告)日：2024-01-30

申请号：US17705846

申请日：2022-03-28

Applicant: Pendar Technologies, LLC

Inventor： Daryoosh Vakhshoori ,  Romain Blanchard ,  Peili Chen ,  Masud Azimi ,  Tobias Mansuripur ,  Kalyani Krishnamurthy ,  Arran M. Bibby ,  Fred R. Huettig, III ,  Gokhan Ulu ,  Greg Vander Rhodes

IPC: G01J3/02 ,  G01J3/44 ,  G01J3/28 ,  G01J3/06 ,  H01S3/00 ,  G01K11/3213 ,  H01S3/094 ,  H01S3/108 ,  H01S3/30 ,  G01K11/324

CPC classification number: G01J3/0275 ,  G01J3/0202 ,  G01J3/0208 ,  G01J3/0216 ,  G01J3/0224 ,  G01J3/0237 ,  G01J3/0248 ,  G01J3/0256 ,  G01J3/0264 ,  G01J3/0272 ,  G01J3/0286 ,  G01J3/06 ,  G01J3/2823 ,  G01J3/44 ,  G01J3/4406 ,  G01J3/4412 ,  G01K11/3213 ,  H01S3/0014 ,  H01S3/094046 ,  H01S3/1086 ,  H01S3/302 ,  G01J2003/4424 ,  G01K11/324 ,  H01S3/0071

Abstract: A compact, portable Raman spectrometer makes fast, sensitive standoff measurements at little to no risk of eye injury or igniting the materials being probed. This spectrometer uses differential Raman spectroscopy and ambient light measurements to measure point-and-shoot Raman signatures of dark or highly fluorescent materials at distances of 1 cm to 10 m or more. It scans the Raman pump beam(s) across the sample to reduce the risk of unduly heating or igniting the sample. Beam scanning also transforms the spectrometer into an instrument with a lower effective safety classification, reducing the risk of eye injury. The spectrometer's long standoff range automatic focusing make it easier to identify chemicals through clear and translucent obstacles, such as flow tubes, windows, and containers. And the spectrometer's components are light and small enough to be packaged in a handheld housing or housing suitable for a small robot to carry.

公开(公告)号：US11885680B2

公开(公告)日：2024-01-30

申请号：US17435945

申请日：2020-02-27

Applicant: Konica Minolta, Inc.

Inventor： Toru Nakatani ,  Toshio Kawano ,  Hitoshi Nagasawa ,  Koji Nagai

IPC: G01J3/02 ,  G01J3/26

CPC classification number: G01J3/0275 ,  G01J3/0229 ,  G01J3/26

Abstract: A spectral device is provided with: a filter having a property of transmitting light of multiple wavelength ranges from a measurement object; a driving means to slide the filter; and a detector to detect an intensity of the light from the measurement object, the light having passed through the filter, the detector to further measure the intensity of the light multiple times sequentially while the driving means slides the filter and thereby obtain multiple pieces of measured data to be used for a calculation of spectral information.

公开(公告)号：US11885676B2

公开(公告)日：2024-01-30

申请号：US17290561

申请日：2019-10-15

Applicant: Agilent Technologies, Inc.

Inventor： Anders Knudtzen ,  Steve Lever

IPC: G02B7/00 ,  G01J3/02 ,  G02B7/20

CPC classification number: G01J3/0202 ,  G01J3/0291 ,  G02B7/003 ,  G02B7/20

Abstract: The invention provides an optical coupling, comprising: a first coupling portion and a second coupling portion, the first and second coupling portions configured to mate in kinematic constraint via a first mounting interface and at least two further mounting interfaces, wherein: the first coupling portion comprises a first mounting element and the second coupling portion comprises a socket, and the first mounting element is receivable in the socket at the first mounting interface such that the first mounting interface constrains lateral displacements of the first coupling portion relative to the second coupling portion when mated; and at least one optical channel for transmitting abeam of light along an optical axis through the optical coupling, the optical channel comprising complementary light-transmitting ports in the first and second coupling portions, wherein the optical axis is not laterally removed from the first mounting interface by more than half the distance between the first mounting interface and the nearest of the further mounting interfaces.

公开(公告)号：US20240027270A1

公开(公告)日：2024-01-25

申请号：US18375404

申请日：2023-09-29

Applicant: MIFTEK CORPORATION

Inventor： Masanobu Yamamoto ,  Keegan Hernandez ,  J. Paul Robinson

IPC: G01J3/44 ,  G01J3/02

CPC classification number: G01J3/4406 ,  G01J3/0218 ,  G01J3/0227

Abstract: A measurement system is disclosed which includes a flow chamber configured to propagate a sample in a flow stream, one or more optical sources configured to irradiate the sample in the flow stream, one or more detector systems each configured to receive resultant light from the sample and, in response, generate a photon signal, the one or more detector systems each including one or more photon sensors each adapted to generate an electronic pulse in response to receiving a photon and a circuit operating in the giga hertz supporting the one or more photon sensors thus configured to count each individual photon in the resultant light from the sample.

公开(公告)号：US20240027266A1

公开(公告)日：2024-01-25

申请号：US18358798

申请日：2023-07-25

Applicant: Hyperspectral Corp.

Inventor： Euan F. Mowat ,  Mandar J. Raut ,  Zachary Shaffer ,  Douglas Paolo Masini

IPC: G01J3/02 ,  G01J3/42 ,  G01J3/50

CPC classification number: G01J3/0275 ,  G01J3/0267 ,  G01J3/0264 ,  G01J3/42 ,  G01J3/501 ,  G01J2003/2836

Abstract: An example method includes receiving a first set of data that includes spectral metrics provided by a spectral acquisition apparatus that obtains the spectral metrics based on interactions of electromagnetic radiation with a sample. The first set of data is processed to obtain a second set of data that includes the spectral metrics. One or more trained models are applied to the spectral metrics or a set of values based on the spectral metrics to obtain a result. Based on the result, either a positive particle of interest detection or a negative particle of interest detection for the particle of interest for the sample is determined. A particle of interest detection notification that indicates either the positive particle of interest detection or the negative particle of interest detection for the particle of interest for the sample may be generated and provided.

公开(公告)号：US20240019306A1

公开(公告)日：2024-01-18

申请号：US18091916

申请日：2022-12-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Heejin CHOI

IPC: G01J3/28 ,  G01J3/02

CPC classification number: G01J3/2823 ,  G01J3/0208 ,  G01J2003/2826

Abstract: A spectral image sensor includes: a first lens system; an infrared blocking filter; a second lens system configured to adjust a chief ray angle (CRA) of oblique incident light to reduce an incident angle of the oblique incident light with respect to a spectral filter; the spectral filter; and an image sensor. The image sensor may be configured to detect light passing through the first lens system, the infrared blocking filter, the second lens system, and the spectral filter.

公开(公告)号：US11874172B2

公开(公告)日：2024-01-16

申请号：US17675125

申请日：2022-02-18

Applicant: SHIMADZU CORPORATION

Inventor： Hideaki Katsu ,  Hiromasa Maruno

IPC: G01J3/453 ,  G01N21/35 ,  G01J3/02

CPC classification number: G01J3/4535 ,  G01J3/021 ,  G01J3/0202 ,  G01N21/35

Abstract: A Fourier transform infrared spectrophotometer includes a main interferometer, a control interferometer, an infrared detector, a control light detector, a waveplate, and a support member. The waveplate is disposed on an optical path of a control light beam and between a fixed mirror or a moving mirror and a beam splitter. The support member supports the waveplate. An outer perimeter of the waveplate includes a supported region supported by the support member and a released region spaced apart from the support member.

公开(公告)号：US11872015B2

公开(公告)日：2024-01-16

申请号：US17151216

申请日：2021-01-18

Applicant: Cylite Pty Ltd

Inventor： Steven James Frisken

IPC: G01J3/447 ,  A61B5/00 ,  A61B3/10 ,  G02B27/00 ,  A61B3/00 ,  G02B21/00 ,  A61B3/18 ,  G01J3/02 ,  A61B3/12 ,  G01N21/47 ,  G02B3/00 ,  G02B27/10 ,  G02B5/18

CPC classification number: A61B5/0066 ,  A61B3/00 ,  A61B3/102 ,  A61B3/1025 ,  A61B3/1225 ,  A61B3/18 ,  A61B5/0068 ,  G01J3/0224 ,  G01J3/447 ,  G01N21/4795 ,  G02B21/0064 ,  G02B27/00 ,  G02B3/005 ,  G02B27/1086 ,  G02B2005/1804

Abstract: Methods and apparatus are presented for confocal microscopy using dispersed structured illumination. In certain embodiments the apparatus also comprises an optical coherence tomography (OCT) system, and OCT images acquired from two or more regions of a sample are registered using a corresponding set of two or more larger area images acquired with the confocal microscopy system. In preferred embodiments the apparatus is suitable for analysing the retina of an eye. The confocal microscopy system can be operated in a purely intensity mode or in a coherent mode. In other embodiments a confocal microscopy system using dispersed structured illumination is utilised for surface metrology.