公开(公告)号：US20240142307A1

公开(公告)日：2024-05-02

申请号：US18542051

申请日：2023-12-15

Applicant: Topcon Corporation

Inventor： Xiang WEI ,  Tony KO

IPC: G01J3/453 ,  G01J3/28

CPC classification number: G01J3/453 ,  G01J3/2823 ,  G01J2003/4538

Abstract: A full-range imaging method doubles imaging range of conventional techniques by removing mirror images of an imaged object that limit conventional images to a “half-range” and that are caused in part by the loss of phase information in a detected signal. Phase information of the detected signal is reconstructed with an averaging technique based on a modulated phase induced in the detected signal during scanning.

公开(公告)号：US20240130621A1

公开(公告)日：2024-04-25

申请号：US18386877

申请日：2023-11-02

Applicant: Omni Medsci, Inc.

Inventor： Mohammed N. ISLAM

IPC: A61B5/00 ,  A61B5/145 ,  A61B5/1455 ,  A61C19/04 ,  G01J3/02 ,  G01J3/10 ,  G01J3/14 ,  G01J3/28 ,  G01J3/42 ,  G01J3/453 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3563 ,  G01N21/359 ,  G01N21/39 ,  G01N21/88 ,  G01N33/02 ,  G01N33/15 ,  G01N33/44 ,  G01N33/49 ,  G16H40/67 ,  G16Z99/00

CPC classification number: A61B5/0088 ,  A61B5/0013 ,  A61B5/0022 ,  A61B5/0075 ,  A61B5/0086 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1455 ,  A61B5/4547 ,  A61B5/6801 ,  A61B5/7203 ,  A61B5/7257 ,  A61B5/7405 ,  A61B5/742 ,  A61C19/04 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/108 ,  G01J3/14 ,  G01J3/28 ,  G01J3/2823 ,  G01J3/42 ,  G01J3/453 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3563 ,  G01N21/359 ,  G01N21/39 ,  G01N21/88 ,  G01N33/02 ,  G01N33/025 ,  G01N33/15 ,  G01N33/442 ,  G01N33/49 ,  G16H40/67 ,  G16Z99/00 ,  G01N2201/129 ,  H01S3/302

Abstract: A measurement system may comprise an actively illuminated camera system, in some embodiments coupled to a time-of-flight sensor or an array of laser diodes beam split into a plurality of spatially separated lights. The camera system may capture two or three dimensional images, and the light source may comprise semiconductor diodes, such as light emitting diodes. The system includes a processor coupled to non-transitory computer readable medium and configured to use artificial intelligence to make one or more decisions. The processing may also involve artificial intelligence or machine learning techniques to analyze anomalous occurrences, or generative artificial intelligence to interface with a user or improve the performance of camera-based systems. Algorithms may also be used to improve the performance of generative artificial intelligence processing. The camera output may be fused with data from other sensors, and the camera may also capture information about the pose or gestures of a user.

公开(公告)号：US11927483B2

公开(公告)日：2024-03-12

申请号：US17771517

申请日：2020-10-27

Applicant: Yokogawa Electric Corporation

Inventor： Yasuyuki Suzuki ,  Yukihiro Nakamura ,  Tetsushi Namatame

IPC: G01J3/453 ,  G01J3/02 ,  G01N21/27 ,  G01N21/45

CPC classification number: G01J3/453 ,  G01J3/0208 ,  G01J3/027 ,  G01N21/274 ,  G01N21/45 ,  G01N2021/458

Abstract: A Fourier spectrophotometer includes: a light source; an interferometer configured to obtain first and second interferograms whose intensity distributions are inverted from each other from the light emitted from light source; a multiplexing optical system configured to multiplex the first and second interferograms to irradiate the sample with a resultant interferogram; a demultiplexing optical system configured to demultiplex the first and second interferograms contained in the light passing through the sample; a light receiver configured to output a first light reception signal obtained by receiving the demultiplexed first interferogram and a second light reception signal obtained by receiving the demultiplexed second interferogram; and a signal processing device configured to perform processing for obtaining a noise-removed spectrum of the wavelength component in the analysis wavelength band by using the first and second light reception signals.

公开(公告)号：US11782260B2

公开(公告)日：2023-10-10

申请号：US17214091

申请日：2021-03-26

Applicant: Battelle Memorial Institute

Inventor： Anthony George

IPC: G02B26/00 ,  G01J3/453

CPC classification number: G02B26/001 ,  G01J3/453

Abstract: The disclosed discrete or continuous optical delay is a medium with high transmission, a high index of refraction and a low dispersion coefficient at the wavelength of light of interest. One side of the medium, orthogonal to the incident light, is fabricated to delay the light at discrete values in a periodic pattern that repeats as the optical delay rotates. The disclosed discrete or continuous optical delay enables the creation of compact interferometry equipment to be used outside a laboratory environment.

公开(公告)号：US20180299252A1

公开(公告)日：2018-10-18

申请号：US16013664

申请日：2018-06-20

Applicant: ADOM, ADVANCED OPTICAL TECHNOLOGIES LTD.

Inventor： Yoel Arieli ,  Yoel Cohen

IPC: G01B9/02 ,  G01J3/02 ,  G01J3/453 ,  G01J3/447 ,  G01N21/31

CPC classification number: G01B9/02091 ,  G01B9/02019 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/447 ,  G01J3/453 ,  G01N21/31 ,  G01N2201/0636 ,  G01N2201/0683

Abstract: Apparatus and methods are described including a line spectrometer that receives a point of light. The line spectrometer includes a first optical element, and a second optical element configured to convert the point of light to a line of light and to direct the line of light toward the first optical element. The first optical element defines first and second surfaces, a distance between the first and second surface varying as a function of distance along the first optical element, the first optical element thereby being configured to generate first and second reflected lines of light that reflect respectively from the first and second surfaces. A detector array receives the first and second lines of light, and generates an interferogram in response thereto. A computer processor determines a spectrum of the point of light, by analyzing the interferogram. Other applications are also described.

公开(公告)号：US20180296097A1

公开(公告)日：2018-10-18

申请号：US16015737

申请日：2018-06-22

Applicant: OMNI MEDSCI, INC.

Inventor： Mohammed N. ISLAM

IPC: A61B5/00 ,  G01J3/28 ,  A61B5/145 ,  A61B5/1455 ,  G01N21/39 ,  G06F19/00 ,  G01N21/88 ,  G16H40/67 ,  G01J3/02 ,  G01J3/10 ,  G01J3/14 ,  G01N33/02 ,  G01N21/359 ,  G01N21/3563 ,  G01N21/35 ,  G01N33/49 ,  G01N33/44 ,  G01N33/15 ,  G01J3/453 ,  G01J3/42 ,  G01J3/18 ,  G01J3/12 ,  G01M3/38 ,  G01N21/85 ,  G01N21/95 ,  H01S3/00 ,  H01S3/30 ,  H01S3/067

CPC classification number: A61B5/0088 ,  A61B5/0013 ,  A61B5/0022 ,  A61B5/0075 ,  A61B5/0086 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1455 ,  A61B5/4547 ,  A61B5/6801 ,  A61B5/7257 ,  A61B5/7405 ,  A61B5/742 ,  A61B2562/0233 ,  A61B2562/0238 ,  A61B2562/146 ,  A61B2576/02 ,  G01J3/0218 ,  G01J3/108 ,  G01J3/14 ,  G01J3/1838 ,  G01J3/28 ,  G01J3/2823 ,  G01J3/42 ,  G01J3/453 ,  G01J2003/104 ,  G01J2003/1208 ,  G01J2003/2826 ,  G01M3/38 ,  G01N21/35 ,  G01N21/3563 ,  G01N21/359 ,  G01N21/39 ,  G01N21/85 ,  G01N21/88 ,  G01N21/9508 ,  G01N33/02 ,  G01N33/025 ,  G01N33/15 ,  G01N33/442 ,  G01N33/49 ,  G01N2021/3595 ,  G01N2021/399 ,  G01N2201/061 ,  G01N2201/06113 ,  G01N2201/062 ,  G01N2201/08 ,  G01N2201/12 ,  G01N2201/129 ,  G06F19/00 ,  G16H40/67 ,  H01S3/0092 ,  H01S3/06758 ,  H01S3/302 ,  Y02A90/26

Abstract: A measurement system includes a light source having semiconductor sources, a multiplexer, and one or more fused silica fibers configured to form an output optical beam having one or more optical wavelengths modulated at a modulation frequency. A light beam set-up includes a monochromator forming a filtered optical beam. A measurement apparatus delivers the filtered optical beam to a sample. A receiver receives a spectroscopy output beam generated from the sample by the filtered optical beam. The receiver is configured to use a lock-in technique that detects the modulation frequency, and to generate first and second signals responsive to light received while the light source is off and on, respectively. The measurement system improves a signal-to-noise ratio of the spectroscopy output beam by differencing the first and second signals. The receiver processes the spectroscopy output beam using chemometrics or multivariate analysis to permit identification of materials within the sample.

公开(公告)号：US20180195905A1

公开(公告)日：2018-07-12

申请号：US15746400

申请日：2016-07-25

Applicant: Finisar Corporation

Inventor： Simon Poole ,  Cibby Pulikkaseril ,  Qing Li ,  Nikhil Cunha ,  Harold Rosenfeldt

IPC: G01J3/433 ,  G01J3/10

CPC classification number: G01J3/433 ,  G01J3/0224 ,  G01J3/10 ,  G01J3/28 ,  G01J3/453 ,  G01J9/04 ,  H04B10/07955 ,  H04B10/07957

Abstract: Described herein is a system and method of controlling an optical heterodyne measurement system (1). The measurement system (1) has a tunable laser (9) for generating a local oscillator signal, an optical input (5) for receiving an input optical signal (7) and a mixing module (13) for mixing the local oscillator signal with the input optical signal to generate an output optical measurement signal. One embodiment provides a method including the steps of: a) receiving an input electrical drive signal for driving the tunable laser (9) to produce a laser output having a spectral linewidth and peak central frequency; b) coupling the input electrical drive signal with an electrical linewidth control signal (54) to selectively broaden the spectral linewidth; and c) during a measurement period, selectively tuning the central frequency of the laser in a stepwise manner across a predetermined frequency spectrum at predefined tuning increments.

公开(公告)号：US20180195853A1

公开(公告)日：2018-07-12

申请号：US15741558

申请日：2015-07-10

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yoshihisa WARASHINA ,  Tomofumi SUZUKI ,  Kohei KASAMORI ,  Ryosuke OKUMURA ,  Kyosuke KOTANI

IPC: G01B9/02

CPC classification number: G01B9/02049 ,  G01B9/02015 ,  G01B9/02027 ,  G01B9/02051 ,  G01J3/0205 ,  G01J3/021 ,  G01J3/0262 ,  G01J3/45 ,  G01J3/453 ,  G01J3/4535

Abstract: An optical interferometer includes a branching-combining unit, a first optical system, a second optical system, and a drive unit, which can be MEMS-based components. The branching-combining unit includes a branching surface, an incident surface, an output surface, and a combining surface on an interface between the interior and the exterior of a transparent member. The branching-combining unit, on the branching surface, partially reflects incident light and outputs as first branched light, and transmits the rest of the incident light into the interior as second branched light. The branching-combining unit, on the combining surface, outputs the first branched light to the outside, reflects the second branched light, and combines the light beams to be output to the outside as combined light.

公开(公告)号：US09976903B2

公开(公告)日：2018-05-22

申请号：US15293219

申请日：2016-10-13

Applicant: Fuji Electric Co., Ltd.

Inventor： Masanori Oto

IPC: G01J3/45 ,  G01B9/02 ,  G01J3/453 ,  G01J3/447 ,  G01J3/02

CPC classification number: G01J3/453 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/447 ,  G01J3/4531

Abstract: A spectrometer includes a beam splitter that receives incident light rays and splits each of the incident light rays into first and second spatially displaced, linearly polarized light rays that respectively have first and second polarization directions orthogonal to each other; an optical member that receives the split incident light rays from the beam splitter and optically converts the split incident light rays into a plurality of light beams that are respectively guided to mutually differing locations so as to generate interference fringes in the respective locations, each of the plurality of light beams including a component of the first linearly polarized light rays and a component of the second linearly polarized light rays; and a detector that detects the interference fringes respectively generated by the plurality of light beams.

公开(公告)号：US09921170B2

公开(公告)日：2018-03-20

申请号：US14898077

申请日：2014-06-12

Applicant: University of Virginia Patent Foundation

Inventor： Brooks Hart Pate ,  Amanda Steber ,  Brent Harris ,  Kevin K. Lehmann

IPC: G01J5/02 ,  G01N22/00 ,  G01J3/453 ,  G01N21/3586

CPC classification number: G01N22/00 ,  G01J3/453 ,  G01N21/3586

Abstract: Examples herein include apparatus and techniques that can be used to perform rotational spectroscopy on gas-phase samples. Such techniques can include using a spectrometer providing frequency synthesis and pulse modulation to provide excitation (e.g., pump or probe pulses) of a gas-phase sample at mm-wave frequencies. Synthesis of such mm-wave frequencies can include use of a frequency multiplier, such as an active multiplier chain (AMC). A free induction decay (FID) elicited by the excitation or other time-domain information can be obtained from the sample, such as down-converted and digitized. A frequency domain representation of the digitized information, such as a Fourier transformed representation, can be used to provide a rotational spectrum.