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21.发明授权公开(公告)号：US11614643B2
公开(公告)日：2023-03-28
申请号：US16876477
申请日：2020-05-18
Applicant: Massachusetts Institute of Technology
Inventor： Cheng Peng , Christopher Louis Panuski , Ryan Hamerly , Dirk Robert Englund
Abstract: A reflective spatial light modulator (SLM) made of an electro-optic material in a one-sided Fabry-Perot resonator can provide phase and/or amplitude modulation with fine spatial resolution at speeds over a Gigahertz. The light is confined laterally within the electro-optic material/resonator layer stack with microlenses, index perturbations, or by patterning the layer stack into a two-dimensional (2D) array of vertically oriented micropillars. Alternatively, a photonic crystal guided mode resonator can vertically and laterally confine the resonant mode. In phase-only modulation mode, each SLM pixel can produce a π phase shift under a bias voltage below 10 V, while maintaining nearly constant reflection amplitude. This high-speed SLM can be used in a wide range of new applications, from fully tunable metasurfaces to optical computing accelerators, high-speed interconnects, true 2D phased array beam steering, beam forming, or quantum computing with cold atom arrays.
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公开(公告)号：US20230010477A1
公开(公告)日：2023-01-12
申请号：US17782118
申请日：2020-12-15
Applicant: Tunable AS
Inventor： Truls SIMENSEN
Abstract: This invention relates to retrievable measuring cell for optical measurements in gas, the cell being defined by a gas conducting pipe having an input end adapted to be connected to a gas flow input intruding gas into the cell and an output end adapted to be connected to a gas flow output. The pipe ends also being adapted to be coupled to optical components including an optical transmitter transmitting light into said cell and an optical receiver adapted to receive light having passed through said cell, the optical beam in said cell having a predetermined shape, the optical components including a light source, at least two minors and a light receiver being mounted in known positions on an external frame covered by the pipe ends. The cell has an elongated shape corresponding to the optical beam shape.
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公开(公告)号：US11536884B2
公开(公告)日：2022-12-27
申请号：US16554681
申请日：2019-08-29
Applicant: Seiko Epson Corporation
Inventor： Tomonori Matsushita , Teruyuki Nishimura , Nozomu Hirokubo
Abstract: An optical device includes an optical member having a plurality of first optical layers and a plurality of second optical layers having a refractive index different from that of the first optical layer in which the first optical layers and the second optical layers are laminated, and a layer thickness changing electrode that changes a thickness of the first optical layer in a lamination direction of the first optical layers and the second optical layers, in which the optical member is provided in a pair, and the pair of optical members is disposed to face each other through a gap, and a gap changing driver that changes a dimension of the gap.
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公开(公告)号：US20220381608A1
公开(公告)日：2022-12-01
申请号：US17818202
申请日：2022-08-08
Applicant: Gigaphoton Inc.
Inventor： Masato MORIYA
Abstract: A sensor degradation evaluation method according to an aspect of the present disclosure includes an evaluation step of evaluating degradation of at least one of a sensor for coarse measurement that receives interference fringes produced by a spectrometer for coarse measurement and a sensor for fine measurement that receives interference fringes produced by a spectrometer for fine measurement, and the evaluation step includes causing a plurality of kinds of laser light having wavelengths different from one another to be sequentially incident on the spectrometer for coarse measurement and the spectrometer for fine measurement and acquiring a coarse-measurement wavelength and a fine-measurement wavelength on a wavelength basis from a plurality of the received interference fringes, acquiring a degradation parameter on a wavelength basis from the coarse-measurement wavelength and the fine-measurement wavelength on a wavelength basis, and comparing the degradation parameter on a wavelength basis with a threshold.
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公开(公告)号：US11499916B2
公开(公告)日：2022-11-15
申请号：US16599943
申请日：2019-10-11
Applicant: Picomole Inc.
Inventor： Christopher Quentin Purves , Denis Dufour
IPC: G01J3/26 , G01N21/39 , G01N33/497 , G01N1/40 , G01J3/42 , G01N21/3504 , G01N21/552 , G01J3/02 , G01N21/31 , G01J3/10 , G06N20/00 , G01N21/77
Abstract: A spectroscopy system is disclosed, and includes a resonant cavity, a first conduit configured to couple at a first end thereof to a gas source, and at a second end thereof to a first end of a sorbent tube containing a sample for analysis, and a second conduit configured to couple at a first end thereof to a second end of the sorbent tube, and at a second end thereof to the resonant cavity.
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Patent Agency Ranking
公开(公告)号：US20220333988A1
公开(公告)日：2022-10-20
申请号：US17847881
申请日：2022-06-23
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Masaki HIROSE , Katsumi SHIBAYAMA , Takashi KASAHARA , Toshimitsu KAWAI , Hiroki OYAMA
Abstract: A light detection device includes a Fabry-Perot interference filter provided with a light transmitting region on a predetermined line, a light detector disposed on one side with respect to the Fabry-Perot interference filter on the line, a package having an opening positioned on the other side with respect to the Fabry-Perot interference filter on the line, a light transmitting member provided in the package such that the opening is blocked, and a temperature control element having an endothermic region thermally connected to the Fabry-Perot interference filter and the light detector. The endothermic region is positioned on one side with respect to the light detector on the line.
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公开(公告)号：US20220317039A1
公开(公告)日：2022-10-06
申请号：US17639539
申请日：2020-08-12
Applicant: Optronics Technology AS
Inventor： Lasse IRVAM , Preben STORÅS
Abstract: The present invention relates to a gas measuring system for measuring the presence of a predetermined gas including a light source and a light receiver separated by a gas volume, the light source emitting light within a chosen range of wavelengths including characteristic absorption wavelengths of the gas to be measured and the light receiver being capable of detecting light in said wavelength range and the system including a spectrum analyzer and a storage means for storing the specific absorption wavelengths of the gas thus to recognize a gas absorbing at said specific wavelengths. The storage means also includes specific absorption wavelengths characterizing at least one other material having absorption wavelengths partially overlapping the absorption wavelengths of said gas, and thus detect the material in the volume. The system includes an analyzer unit being adapted to detect said other material from the gas measurements so as to distinguish between said material and gas in the volume, and to provide a measure of said gas.
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公开(公告)号：US20220299366A1
公开(公告)日：2022-09-22
申请号：US17654837
申请日：2022-03-15
Applicant: SEIKO EPSON CORPORATION
Inventor： Haruki MIYASAKA , Sho ARUGA , Kenichi SHIROTA , Juro MASAKI
Abstract: A color measurement apparatus includes a substrate including an optical filter that processes light arriving from a measurement target, a reduction portion that reduces a quantity of light heading toward the optical filter from the measurement target, a frame that is a frame arranged to face the substrate and to which the substrate is fixed, and has a shape avoiding the optical filter and in which the reduction portion is positioned at a position facing the optical filter, and a positioning section that decides a relative position between the substrate and the frame in a direction intersecting with a center axis of the reduction portion.
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公开(公告)号：US11422029B1
公开(公告)日：2022-08-23
申请号：US17101509
申请日：2020-11-23
Applicant: Intelon Optics, Inc.
Inventor： Peng Shao , Paul Robert Parise , Kwangsup Shin , Maxwell Kotlarchyk
Abstract: Input light comprising an optical signal associated with a spectrum of at least a portion of the input light is received into an interferometer. Data comprising an image is provided using a detector array comprising detection elements. Output light is received from the interferometer into a set of one or more optical elements, which provide an optical interference pattern associated with an intensity of at least a portion of the output light that is distributed over a set of detection elements. Detection of the optical signal is stabilized based at least in part on the data using a control system comprising: a light-control module that controls a first feedback loop that stabilizes the portion of the output light; and/or a temperature-control module that controls a second feedback loop that stabilizes a temperature sensed by at least one temperature sensor within a thermal environment associated with the interferometer.
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公开(公告)号：US11378448B2
公开(公告)日：2022-07-05
申请号：US16981527
申请日：2019-03-21
Inventor： Fabrizio Silvestri , Jonas Berzins , Zuzanna Deutschmann , Gerini Giampiero , Stefan Michael Bruno Bäumer
Abstract: The optical device comprises a group of Fabry-Perot resonators, formed by a stack of a first and second partial reflection layer and an intermediate layer between the first and second partial reflection layer. The intermediate layer comprises a dielectric material and a group of arrays of posts embedded in the dielectric material at different positions along the intermediate layer. Each array in the group contains posts of a different non-circular shape and/or orientation in cross-section with a plane parallel to the reflection layers. As a result, Fabry-Perot resonators are formed in areas that contain different arrays, each having first and second resonance peaks at mutually different resonance frequencies for different polarization components. Light intensity sensors may be provided located below the different areas. From the intensities measured by the sensors, the intensities of different polarization components of the light can be computed over a range of wavelengths.
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