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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：US20180241407A1
公开(公告)日：2018-08-23
申请号：US15901223
申请日：2018-02-21
Applicant: Seiko Epson Corporation
Inventor： Nobuhito HAYASHI , Yoshiyuki MAKI , Naoki ISHIHARA , Takuya MIYAKAWA
Abstract: A quantum interference device includes an atomic cell which has an internal space enclosing an alkali metal, a first light source which emits a resonance light pair that is circularly polarized in the same direction as each other and excites the alkali metal, a second light source which emits an adjustment light, and a light receiver, wherein the atomic cell includes an inner wall surface which is formed of a material containing a compound having a polar group and surrounds the internal space, a first layer which is provided on the inner wall surface and contains a compound derived from a first compound having a functional group that undergoes an elimination reaction with the polar group, and a second layer which is provided on the first layer and contains a compound derived from a second compound that is a nonpolar olefin-based polymer.
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3.发明申请QUANTUM INTERFERENCE DEVICE, ATOMIC OSCILLATOR, ELECTRONIC DEVICE, AND MOVING OBJECT 审中-公开量子干扰装置，原子振荡器，电子装置和移动对象公开(公告)号：US20170040946A1
公开(公告)日：2017-02-09
申请号：US15295261
申请日：2016-10-17
Applicant: Seiko Epson Corporation
Inventor： Nobuhito HAYASHI , Yoshiyuki MAKI
IPC: H03B17/00
Abstract: An atomic oscillator includes an atom cell, a first light source device, a second light source device, and a reception section. The atom cell is filled with alkali metal. The first light source device emits a light beam that includes a resonance light beam pair configured to be circularly polarized with each other in the same direction and configured to cause the alkali metal to resonate. The second light source device emits a light beam that includes adjustment light beam configured to be circularly polarized in a reverse direction to the resonance light beam pair. The reception device receives the resonance light beam pair that pass through the atom cell. The adjustment light beam may include the resonance light beam that causes the alkali metal to resonate. In addition, the resonance light beam pair may be a line and the adjustment light beam is a line.
Abstract translation: 原子振荡器包括原子单元，第一光源装置，第二光源装置和接收部。 原子池充满碱金属。 第一光源装置发射包括构造为在相同方向上彼此圆偏振的共振光束对的光束，并且被配置为使碱金属发生共振。 第二光源装置发射包括调整光束的光束，该调整光束被配置为在与谐振光束对相反的方向上被圆偏振。 接收装置接收通过原子单元的共振光束对。 调整光束可以包括使碱金属共振的共振光束。 此外，谐振光束对可以是线，调整光束是线。
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4.发明申请ATOMIC RESONANCE TRANSITION DEVICE, ATOMIC OSCILLATOR, TIMEPIECE, ELECTRONIC APPARATUS AND MOVING OBJECT 有权原子共振转换装置，原子振荡器，时序，电子装置和移动对象公开(公告)号：US20160182069A1
公开(公告)日：2016-06-23
申请号：US14973796
申请日：2015-12-18
Applicant: Seiko Epson Corporation
Inventor： Hiroyuki YOSHIDA , Nobuhito HAYASHI
Abstract: An atomic resonance transition device includes an atomic cell in which an atom is sealed, a first light source part to emit a first light resonant with a D1 line of the atom in the atomic cell, a second light source part to emit a second light having a wavelength different from that of the first light and resonant with the D1 line or a D2 line of the atom in the atomic cell, and a detection part to detect a light beat due to interference between the first light and the second light passing through the atomic cell and to generate a beat signal.
Abstract translation: 原子共振转移装置包括原子被密封的原子单元，发射与原子单元中的原子的D1线谐振的第一光的第一光源部，发射具有原子的第二光的第二光， 与第一光不同的波长并与原子单元中的D1线或原子的D2线谐振的检测部分，以及检测部分，用于检测由于第一光和穿过第一光的第二光之间的干涉引起的光拍 并且产生拍子信号。
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公开(公告)号：US20240318951A1
公开(公告)日：2024-09-26
申请号：US18612343
申请日：2024-03-21
Applicant: SEIKO EPSON CORPORATION
Inventor： Nobuhito HAYASHI
IPC: G01B9/02002 , G01B9/02 , H01S5/024 , H01S5/0687
CPC classification number: G01B9/02002 , G01B9/02045 , H01S5/024 , H01S5/0687 , G01B2290/70
Abstract: A laser interferometer includes: an interference optical system including a laser source configured to emit laser beams and to cause the laser beams to interfere with each other; a gas cell configured to seal a gas absorbing light having a predetermined wavelength and allow the laser beams to be incident; an detector configured to detect an amount of light emitted from the gas cell and output an emitted light amount detection signal; and a light source controller configured to control a wavelength of the laser beams based on the emitted light amount detection signal.
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Patent Agency Ranking
公开(公告)号：US20190334536A1
公开(公告)日：2019-10-31
申请号：US16395626
申请日：2019-04-26
Applicant: Seiko Epson Corporation
Inventor： Koji CHINDO , Nobuhito HAYASHI , Hideaki YAJIMA
Abstract: An atomic oscillator includes a light emitting element, an atomic cell, and a light receiving element that receives the light passing through the atomic cell. The atomic cell has a first chamber containing alkali metal atoms in a gas state and having a first wall through which the light from the light emitting element passes, a second chamber containing alkali metal atoms in a liquid state and having a second wall, a passage connecting the first chamber and the second chamber to each other, and a part which is disposed between the first chamber and the second chamber and has a thermal conductivity lower than the thermal conductivity of a material forming the first wall and the thermal conductivity of a material forming the second wall.
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7.发明申请公开(公告)号：US20170288688A1
公开(公告)日：2017-10-05
申请号：US15465931
申请日：2017-03-22
Applicant: Seiko Epson Corporation
Inventor： Yoshiyuki MAKI , Nobuhito HAYASHI
CPC classification number: H03L7/26 , G04F5/14 , H01S5/005 , H01S5/02212 , H01S5/02248 , H01S5/0687 , H01S5/183 , H03B17/00 , H03L1/04
Abstract: A quantum interference device includes an atomic cell, a light source, a light detector, a package, and a reflective portion. The atomic cell has alkali metal atoms disposed within, and the light source emits light to excite the alkali metal atoms in the atomic cell. The light detector detects light transmitted through the atomic cell. The package defines an internal space and houses at least the light source. The reflective portion is provided between an inner surface of the package and the light source, and has reflectance to an electromagnetic wave having a wavelength of 4 μm, where the reflectance is greater than or equal to 50%.
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公开(公告)号：US20170288687A1
公开(公告)日：2017-10-05
申请号：US15460975
申请日：2017-03-16
Applicant: SEIKO EPSON CORPORATION
Inventor： Yoshiyuki MAKI , Nobuhito HAYASHI
Abstract: A quantum interference device includes an atom cell, a light source emits light to the alkali metal atoms, a photodetector that detects the light transmitted through the atom cell, a thermal conductor, which is disposed so as to straddle the light source side and the photodetector side of the atom cell, and the thermal conductor having higher thermal conductively than the atom cell, and a support, which is disposed so as to be separated from the thermal conductor, and supports the atom cell, the light source, the photodetector, and the thermal conductor in a lump, the support having lower thermal conductivity than the thermal conductor.
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公开(公告)号：US20250102362A1
公开(公告)日：2025-03-27
申请号：US18894090
申请日：2024-09-24
Applicant: SEIKO EPSON CORPORATION
Inventor： Nobuhito HAYASHI , Kohei YAMADA
Abstract: An interferometer including an analysis optical system including a retroreflector configured to reflect analysis light and a first light receiver configured to receive the analysis light and output a first light reception signal, the analysis optical system irradiating a sample with the analysis light and causing the analysis light to interfere; a length measuring optical system including a laser light source configured to output laser light, an optical modulator configured to modulate a frequency of the laser light by using a vibrator and add a modulation component to the laser light, and a second light receiver configured to receive the laser light containing the modulation component and a length measurement component generated when the retroreflector is irradiated with the laser light and output a second light reception signal, the length measuring optical system causing the laser light to interfere; and a driver configured to change a position of the retroreflector.
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公开(公告)号：US20240319087A1
公开(公告)日：2024-09-26
申请号：US18612104
申请日：2024-03-21
Applicant: SEIKO EPSON CORPORATION
Inventor： Nobuhito HAYASHI , Kohei YAMADA
IPC: G01N21/3504 , G01N21/35 , G01N21/3586 , G01N21/359
CPC classification number: G01N21/3504 , G01N21/3586 , G01N21/359 , G01N2021/3595 , G01N2201/0636 , G01N2201/12769
Abstract: A spectroscopic device includes: an analysis optical system; a length measurement optical system; and a calculation device. The analysis optical system includes a moving mirror and a first light receiving element. The length measurement optical system includes a second light source configured to emit laser light, a gas cell with a gas that absorbs light of a predetermined wavelength sealed therein and configured to cause the laser light to be incident thereon, an emitted light amount detection unit configured to detect an amount of light emitted from the gas cell and output an emitted light amount detection signal, a light source control unit configured to control a wavelength of the laser light based on the emitted light amount detection signal, and a length measurement unit configured to use the laser light to obtain a displacement signal corresponding to a position of the moving mirror, and the calculation device includes a moving mirror position calculation unit, a light intensity calculation unit, and a Fourier transform unit configured to generate a spectral pattern.
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