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公开(公告)号：US10732045B2
公开(公告)日：2020-08-04
申请号：US16122486
申请日：2018-09-05
Inventor： Sang-Pil Han , Jun Hwan Shin , Il Min Lee , Kyung Hyun Park
Abstract: An image acquisition apparatus including a beam source, a beam expander, a beam splitter, an interferometer reference arm, a sample, a beam diffuser, a telecentric f-θ lens, a beam scanner, and a beam detector uses a terahertz wave to acquire a surface image and a depth image of the sample.
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公开(公告)号：US10732044B2
公开(公告)日：2020-08-04
申请号：US16704444
申请日：2019-12-05
Applicant: Massachusetts Institute of Technology
Inventor： Erika Ye , Amir H. Atabaki , Ningren Han , Rajeev J. Ram , William F. Herrington
Abstract: A non-paraxial Talbot spectrometer includes a transmission grating to receive incident light. The grating period of the transmission grating is comparable to the wavelength of interest so as to allow the Talbot spectrometer to operate outside the paraxial limit. Light transmitted through the transmission grating forms periodic Talbot images. A tilted detector is employed to simultaneously sample the Talbot images at various distances along a direction perpendicular to the grating. Spectral information of the incident light can be calculated by taking Fourier transform of the measured Talbot images or by comparing the measured Talbot images with a library of intensity patterns acquired with light sources having known wavelengths.
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193.发明申请公开(公告)号：US20200209170A1
公开(公告)日：2020-07-02
申请号：US16807270
申请日：2020-03-03
Applicant: BrightSpec, Inc.
Inventor： Justin L. Neill , Brent HARRIS , Brooks Hart Pate
Abstract: Methods and apparatuses for direct multiplication Fourier transform millimeter wave spectroscopy are disclosed herein. A sample method includes generating at least one pulse of microwave electromagnetic energy. The sample method also includes frequency-multiplying the pulse(s) to generate at least one frequency-multiplied pulse and filtering at least one spurious harmonic of the frequency-multiplied pulse to generate at least one filtered pulse. The spurious harmonic is generated by frequency-multiplying the pulse. The method also includes exciting a sample using the filtered pulse. The method further includes detecting an emission from the sample. The emission is elicited at least in part by the filtered pulse.
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公开(公告)号：US10677650B2
公开(公告)日：2020-06-09
申请号：US16313721
申请日：2017-06-30
Inventor： Nicolas Guerineau , Etienne Le Coarer , Yann Ferrec , Florence De La Barriere
Abstract: A spectral imager, including: a photodetector including a plurality of photosensitive sites exposed on a photosensitive surface; a collimating lens including an intermediate focal plane; an array of interferometers including two main waves, each including a cavity defined by two faces; an array of microlenses arranged in a plane parallel to the photosensitive surface, each microlens paired with an interferometer to form an optical pair, including an image focal plane coinciding with the photosensitive surface and facing a section of the photosensitive surface.
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公开(公告)号：US10663347B2
公开(公告)日：2020-05-26
申请号：US16170878
申请日：2018-10-25
Inventor： Manabu Kojima
Abstract: An optical measurement apparatus includes: a moving mirror that changes an optical path length of one of two beams generated by splitting light subject to measurement; a drive mechanism that causes the moving mirror to reciprocate a predetermined distance in linear motion; a measured light receiver that detects intensity of light generated by superimposing the two beams; and a computation processor that sets a plurality of measurement ranges within the predetermined distance and calculates a measurement value based on a change in the light intensity detected by the measured light receiver for each of the measurement ranges.
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Patent Agency Ranking
196.发明申请公开(公告)号：US20200158573A1
公开(公告)日：2020-05-21
申请号：US16773560
申请日：2020-01-27
Inventor： Cheyenne Teng , Gerard Wysocki , Eric J. Zhang , William M. Green
IPC: G01J3/453 , G01N21/3504 , G01J3/433
Abstract: A method is provided for Fourier domain dynamic correction of optical fringes in a laser spectrometer. The method includes Fourier transforming a background spectrum contaminated with the optical fringes to obtain baseline fringes in a frequency domain. The method includes partitioning the baseline fringes in the frequency domain to obtain partitioned baseline fringes. The method includes reconstructing the partitioned baseline fringes as separate spectra. The method includes constructing a fitting model to approximate the background spectrum by assigning a first and a second free parameter to each of partitioned baseline fringe components to respectively allow for drift and amplitude adjustments during a fitting of the fitting model. The method includes applying the fitting model to a newly acquired spectrum to provide an interpretation of the newly acquired spectrum having a reduced influence of spectral contamination on concentration retrieval.
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公开(公告)号：US10656017B2
公开(公告)日：2020-05-19
申请号：US15966470
申请日：2018-04-30
Applicant: Eagle Technology, LLC
Inventor： Paul Maurer , Anna J. Glumb
Abstract: Methods and systems to extract a spectrum of a hyperspectral interferogram, with innovative treatment of off-axis spectral correction and other features, which may be efficiently performed on-board a satellite.
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公开(公告)号：US10627291B2
公开(公告)日：2020-04-21
申请号：US16170878
申请日：2018-10-25
Inventor： Manabu Kojima
Abstract: An optical measurement apparatus includes: a moving mirror that changes an optical path length of one of two beams generated by splitting light subject to measurement; a drive mechanism that causes the moving mirror to reciprocate a predetermined distance in linear motion; a measured light receiver that detects intensity of light generated by superimposing the two beams; and a computation processor that sets a plurality of measurement ranges within the predetermined distance and calculates a measurement value based on a change in the light intensity detected by the measured light receiver for each of the measurement ranges.
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199.发明申请公开(公告)号：US20200077898A1
公开(公告)日：2020-03-12
申请号：US16669794
申请日：2019-10-31
Applicant: Omni Medsci, Inc.
Inventor： Mohammed N. ISLAM
IPC: A61B5/00 , G01N33/49 , G01N33/44 , G01N33/15 , G01N33/02 , G01N21/88 , G01N21/39 , G01N21/359 , G01N21/3563 , G01N21/35 , G01J3/453 , G01J3/42 , G01J3/28 , G01J3/14 , G01J3/10 , G01J3/02 , A61B5/1455 , A61B5/145 , G16H40/67 , A61C19/04
Abstract: A measurement system is provided with a light source that is configured to increase signal-to-noise ratio by increasing a light intensity from at least one of a plurality of semiconductor sources. An apparatus to receive a portion of the output optical beam, and deliver an analysis output beam to a sample. A receiver to: receive and process at least a portion of the analysis output beam reflected or transmitted from the sample, generate an output signal, and synchronize to the light source. A smart phone or tablet to: receive and process at least a portion of the output signal, store and display the processed output signal, and transmit at least a portion of the processed output signal. A cloud to: receive an output status comprising the at least a portion of the processed output signal, process the received output status to generate processed data, and store the processed data.
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公开(公告)号：US20200003620A1
公开(公告)日：2020-01-02
申请号：US16449770
申请日：2019-06-24
Applicant: Zygo Corporation
Inventor： Leslie L. Deck
Abstract: Method and apparatus for determining the wavelength of a light beam are provided. An input light beam is received, and light from the input light beam is distributed to multiple channels. At a first pair of interferometer cavities that has a first free spectral range, two of the multiple channels of light are received. The intensity of light reflected from the first pair of cavities is measured, and a first estimate of the wavelength or optical frequency of the input light beam is determined based on measurements of interference signals from the first pair of cavities and an initial estimate of the wavelength or optical frequency. At a second pair of cavities that has a second free spectral range smaller than the first free spectral range, another two of the multiple channels of light are received. The intensity of light from the second pair of cavities is measured, and a second estimate of the wavelength or optical frequency of the input light beam is determined based on the first estimate and measurements of interference signals from the second pair of cavities, in which the second estimate is more accurate than the first estimate.
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