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公开(公告)号：US20230079613A1
公开(公告)日：2023-03-16
申请号：US17898618
申请日：2022-08-30
Applicant: SEIKO EPSON CORPORATION
Inventor： Kohei YAMADA , Nobuhito HAYASHI
IPC: G01H9/00
Abstract: A laser interferometer includes: a laser light source configured to emit laser light; a light shielding element having an opening through which the laser light passes; an optical modulator configured to modulate the laser light into reference light having a different frequency; and a light receiving element configured to receive object light generated by reflecting the laser light by an object to be measured and the reference light and output a light receiving signal. 0.10≤φpin≤10.0, in which φpin [mm] is a diameter of the opening.
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公开(公告)号：US20220276098A1
公开(公告)日：2022-09-01
申请号：US17652650
申请日：2022-02-25
Applicant: SEIKO EPSON CORPORATION
Inventor： Kohei YAMADA
Abstract: A laser interferometer includes a light source configured to emit first laser light, an optical modulator including a vibrator and configured to modulate, by the vibrator, the first laser light into second laser light having a different frequency, an optical path switching unit disposed in a first optical path through which the first laser light travels and configured to switch a direction of travel of the first laser light between the first optical path and a second optical path different from the first optical path, a reflector including a light-reflecting surface configured to move along the second optical path and reflect the first laser light traveling through the second optical path, and a photoreceptor configured to receive first interference light of the second laser light and third laser light generated by reflection of the first laser light on an object to be measured, and second interference light of the second laser light and fourth laser light generated by reflection of the first laser light on the light-reflecting surface and output a light-receiving signal.
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公开(公告)号：US20220065614A1
公开(公告)日：2022-03-03
申请号：US17411231
申请日：2021-08-25
Applicant: Seiko Epson Corporation
Inventor： Kohei YAMADA , Takeshi SHIMIZU
IPC: G01B9/02
Abstract: A laser interferometer includes a light source that emits first laser light, an optical modulator that includes a vibrator and modulates the first laser light by using the vibrator to generate second laser light including a modulated signal, a photodetector that receives interference light between third laser light including a sample signal generated by reflecting the first laser light on an object and the second laser light to output a light reception signal, a demodulation circuit that demodulates the sample signal from the light reception signal based on a reference signal, and an oscillation circuit that outputs the reference signal to the demodulation circuit, and the vibrator is a signal source of the oscillation circuit.
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公开(公告)号：US20180110474A1
公开(公告)日：2018-04-26
申请号：US15718713
申请日：2017-09-28
Applicant: SEIKO EPSON CORPORATION
Inventor： Akiko YAMADA , Kohei YAMADA
CPC classification number: A61B5/7278 , A61B5/0004 , A61B5/02007 , A61B5/0261 , A61B5/681 , A61B5/742
Abstract: A measurement device includes: a calculation unit that calculates a blood flow index regarding a waveform of a blood flow signal indicating a temporal change in a blood flow rate of a subject; and a determination unit that determines whether there is stenosis or atresia of a blood vessel of the subject according to the blood flow index.
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公开(公告)号：US20170067831A1
公开(公告)日：2017-03-09
申请号：US15248166
申请日：2016-08-26
Applicant: Seiko Epson Corporation
Inventor： Kohei YAMADA
IPC: G01N21/65
CPC classification number: G01N21/658 , G01N21/783
Abstract: A substance detection method includes exposing a sensor chip for surface-enhanced Raman scattering having a metal microstructure and an organic molecular modification film which modifies the metal microstructure to a first gas, irradiating a first region of the sensor chip exposed to the first gas with first laser light, performing first measurement by acquiring the intensity of Raman scattered light from the first region, blocking the first laser light after the performing the first measurement, and adjusting an irradiation region where the sensor chip is irradiated with the first laser light from the first region to a second region which is different from the first region of the sensor chip after the blocking the first laser light.
Abstract translation: 一种物质检测方法，包括将具有金属微观结构的表面增强拉曼散射传感器芯片和将金属微结构改变为第一气体的有机分子改性膜曝光，用第一次照射暴露于第一气体的传感器芯片的第一区域 激光，通过获取来自第一区域的拉曼散射光的强度进行第一测量，在执行第一测量之后阻挡第一激光，并且从第一测量中调整照射具有第一激光的传感器芯片的照射区域 区域到阻挡第一激光后与传感器芯片的第一区域不同的第二区域。
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Patent Agency Ranking
公开(公告)号：US20130229652A1
公开(公告)日：2013-09-05
申请号：US13858323
申请日：2013-04-08
Applicant: SEIKO EPSON CORPORATION
Inventor： Jun AMAKO , Kohei YAMADA
CPC classification number: G01J1/0407 , G01N21/55 , G01N21/553 , G01N21/658 , G01N21/774
Abstract: A sensor chip includes: a substrate that has a planar portion; and a diffraction grating on the planar portion and having a metal surface, the diffraction grating having a target substance thereon and including: a plurality of first protrusions periodically arranged in a period equal to or greater than 100 nm and equal to or less than 1000 nm in a first direction parallel to the planar portion, a plurality of base portions located between two adjacent first protrusions and configures abase of the substrate, a plurality of second protrusions formed on upper faces of the plurality of first protrusions, and a plurality of third protrusions formed on the plurality of base portions.
Abstract translation: 传感器芯片包括：具有平面部分的基板; 以及在平面部分上具有金属表面的衍射光栅，所述衍射光栅在其上具有目标物质，并且包括：周期性地等于或大于100nm且等于或小于1000nm的周期性地布置的多个第一突起 在平行于平面部分的第一方向上，位于两个相邻的第一突起之间的多个基部，并且构成所述基板的宽度，形成在所述多个第一突起的上表面上的多个第二突起，以及多个第三突起 形成在多个基部上。
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公开(公告)号：US20240319082A1
公开(公告)日：2024-09-26
申请号：US18611916
申请日：2024-03-21
Applicant: SEIKO EPSON CORPORATION
Inventor： Kohei YAMADA
CPC classification number: G01N21/31 , G01B11/02 , G01N2201/06113 , G01N2201/0636
Abstract: An optical device includes: an analysis optical system; and a length measurement optical system. The analysis optical system includes a moving mirror configured to reflect analysis light to add a first modulation signal to the analysis light, a gas cell with a gas that absorbs light of a predetermined wavelength sealed therein and configured to add a light absorption signal to the analysis light, and a first light receiving element configured to receive the analysis light including a sample-derived signal, the first modulation signal, and the light absorption signal. The length measurement optical system includes a second light source and obtains a displacement signal corresponding to a position of the moving mirror using laser light.
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公开(公告)号：US20220065612A1
公开(公告)日：2022-03-03
申请号：US17411281
申请日：2021-08-25
Applicant: Seiko Epson Corporation
Inventor： Kohei YAMADA
Abstract: A laser interferometer includes a light source that emits first laser light, an optical modulator that includes a vibrator and modulates the first laser light by using the vibrator to generate second laser light including a modulated signal, a photodetector that receives interference light between third laser light including a sample signal generated by reflecting the first laser light on an object and the second laser light to output a light reception signal, a demodulation circuit that demodulates the sample signal from the light reception signal based on a reference signal, and a signal generator that outputs the reference signal input to the demodulation circuit and outputs a drive signal input to the optical modulator, in which Vd/Vr
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公开(公告)号：US20180168465A1
公开(公告)日：2018-06-21
申请号：US15837031
申请日：2017-12-11
Applicant: SEIKO EPSON CORPORATION
Inventor： Akiko YAMADA , Kohei YAMADA
IPC: A61B5/026 , A61B5/02 , A61B5/0285
CPC classification number: A61B5/0261 , A61B5/02007 , A61B5/02108 , A61B5/02125 , A61B5/0285 , A61B5/681 , A61B2562/043 , A61B2562/046
Abstract: A measurement device includes a plurality of detection units that respectively include a light emitting unit which emits light to a measurement target site and a light receiving unit which generates detection signals corresponding to a light receiving level of the light emitted from the light emitting unit and passing through the inside of the measurement target site, and a selection unit that selects some of the detection signals in accordance with an intensity index indicating signal intensity of the respective detection signals, from the detection signals generated by the light receiving unit in each of the plurality of detection units.
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公开(公告)号：US20170160203A1
公开(公告)日：2017-06-08
申请号：US15371505
申请日：2016-12-07
Applicant: Seiko Epson Corporation
Inventor： Kohei YAMADA
CPC classification number: G01N21/658 , C09K9/02 , C09K2211/1003 , C09K2211/188 , G01N33/0037 , Y02A50/245
Abstract: An electric field enhancement element includes a metal microstructure and a modifying molecule disposed on the surface of the metal microstructure, wherein the modifying molecule is derived from a compound represented by the following formula (1). In the formula (1), X is —NH2, —SH, —Cl, —CHO, —COOH, —SO3H, —CN, or —NO2.
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