公开(公告)号：US20160178438A1

公开(公告)日：2016-06-23

申请号：US15058683

申请日：2016-03-02

Applicant: Seiko Epson Corporation

Inventor： Kohei YAMADA

IPC: G01J3/44 ,  G01J3/10

CPC classification number: G01J3/44 ,  G01J3/02 ,  G01J3/10 ,  G01N21/658 ,  G01N33/0047

Abstract: A Raman spectroscopic apparatus analyzes a substance under analysis and includes a light source that emits light of a first wavelength, an optical device that adsorbs the substance under analysis and is irradiated with the light of the first wavelength, and an optical detector that receives light radiated from the optical device. The optical device includes a first structural member that generates charge transfer resonance in response to the light of the first wavelength and a second structural member that is less than or equal to 5 nm from the first structural member and generates surface plasmon resonance in response to the light of the first wavelength. The first structural member is made of a metal or a semiconductor, and the second structural member is made of a metal different from the material of the first structural member.

公开(公告)号：US20150064778A1

公开(公告)日：2015-03-05

申请号：US14477063

申请日：2014-09-04

Applicant: Seiko Epson Corporation

Inventor： Kohei YAMADA

IPC: G01N21/65 ,  G01N33/483

CPC classification number: G01J3/44 ,  G01J3/02 ,  G01J3/10 ,  G01N21/658 ,  G01N33/0047

Abstract: A Raman spectroscopic apparatus analyzes a substance under analysis and includes a light source that emits light of a first wavelength, an optical device that adsorbs the substance under analysis and is irradiated with the light of the first wavelength, and an optical detector that receives light radiated from the optical device. The optical device includes a first structural member that generates charge transfer resonance in response to the light of the first wavelength and a second structural member that is less than or equal to 5 nm from the first structural member and generates surface plasmon resonance in response to the light of the first wavelength. The first structural member is made of a metal or a semiconductor, and the second structural member is made of a metal different from the material of the first structural member.

Abstract translation: 拉曼分光装置分析被分析物质，并且包括发射第一波长的光的光源，吸附被分析物质并用第一波长的光照射的光学装置，以及接收光辐射的光检测器 从光学装置。 光学装置包括响应于第一波长的光产生电荷传递共振的第一结构部件和距离第一结构部件小于或等于5nm的第二结构部件，并响应于第一结构部件产生表面等离子体共振 第一波长的光。 第一结构构件由金属或半导体制成，第二结构构件由与第一结构构件的材料不同的金属制成。

公开(公告)号：US20140166863A1

公开(公告)日：2014-06-19

申请号：US14104366

申请日：2013-12-12

Applicant: Seiko Epson Corporation

Inventor： Akiko YAMADA ,  Kohei YAMADA

IPC: G02B1/10 ,  G01J1/42

CPC classification number: G01J1/42 ,  B82Y15/00 ,  G01N21/65 ,  G01N21/658 ,  Y10T428/256 ,  Y10T428/31678

Abstract: An optical device includes: a substrate having a dielectric layer and a plurality of metal particles; and an organic molecular layer formed by self-assembly on at least either the surface of the dielectric layer or the surfaces of the metal particles. In the organic molecular layer, a first organic molecule and a second organic molecule are alternately arranged in a first direction, and the chain length of an organic group of the first organic molecule and the chain length of an organic group of the second organic molecule are different from each other.

Abstract translation: 光学器件包括：具有电介质层和多个金属颗粒的衬底; 以及通过在电介质层的表面或金属颗粒的表面的至少任一个上自组装形成的有机分子层。 在有机分子层中，第一有机分子和第二有机分子沿第一方向交替排列，第一有机分子的有机基团的链长和第二有机分子的有机基团的链长为 彼此不同。

公开(公告)号：US20250010646A1

公开(公告)日：2025-01-09

申请号：US18762940

申请日：2024-07-03

Applicant: SEIKO EPSON CORPORATION

Inventor： Yasunori ONISHI ,  Shigenori NAKAGAWA ,  Kazutoshi FUJISHIMA ,  Katsumasa TANAKA ,  Takahiro MATSUZAKI ,  Shuhei NISHIZAWA ,  Kohei YAMADA ,  Tsukasa EGUCHI ,  Atsushi MATSUO ,  Toshiyuki NOZAWA

IPC: B41J29/17 ,  B41J2/21 ,  B41J11/00 ,  G01N21/47 ,  G01N21/85 ,  G01N33/32

Abstract: A recording device 11 includes a transport belt 25; a recording section 12 configured to record an image on a medium 99 by ejecting pigment ink onto the medium 99; and a washing mechanism 31 configured to wash the transport belt 25 with washing liquid, wherein the washing mechanism 31 includes a storage section 35 configured to store washing liquid, a first detection section 59 configured to detect an ink concentration of black ink contained in washing liquid, a second detection section 60 configured to detect an ink concentration of pigment ink contained in the washing liquid, and a washing control section 65, the second detection section 60 detects the ink concentration of the pigment ink, and the washing control section 65 determines a threshold based on the ink concentration of the black ink detected, and discharges washing liquid from the storage section 35 based on the threshold.

公开(公告)号：US20240393180A1

公开(公告)日：2024-11-28

申请号：US18672380

申请日：2024-05-23

Applicant: SEIKO EPSON CORPORATION

Inventor： Kohei YAMADA ,  Tetsuro MATSUMOTO

IPC: G01J3/453 ,  G01B21/02

Abstract: An interferometer including an analysis unit and a length measurement unit, wherein the analysis unit includes an analysis optical system that includes a first light source configured to emit an analysis light, a moving mirror that reflects the analysis light, and a first light receiving element that receives the analysis light, and is used for analysis of the sample using interference of the analysis light, and a mirror drive unit that drives the moving mirror based on a mirror drive signal, the length measurement unit includes a length measurement optical system that includes a laser source, a light modulator that adds a modulation component by modulating a frequency of the laser beam using a vibrating element, and a second light receiving element that receives the laser beam including the length measurement component and the modulation component generated when the moving mirror is irradiated with the laser beam, and outputs a second received light signal, and is used for detection of a position of the moving mirror using interference of the laser beam, and the vibrating element is a signal source of the mirror drive signal.

公开(公告)号：US20240175674A1

公开(公告)日：2024-05-30

申请号：US18522316

申请日：2023-11-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Kohei YAMADA ,  Atsushi MATSUO

IPC: G01B9/02 ,  G01B9/02002

CPC classification number: G01B9/02083 ,  G01B9/02002 ,  G01B9/02045 ,  G01B2290/70

Abstract: A laser interferometer includes: a laser light source configured to emit laser light toward an object; an optical modulator including a vibrator configured to modulate the laser light using the vibrator and superimpose a modulation signal on the laser light; a photodetector configured to receive the laser light including a sample signal derived from the object and the modulation signal, and to output a light reception signal; a demodulation circuit configured to demodulate the sample signal from the light reception signal based on a reference signal; and an oscillation circuit configured to operate using the vibrator as a signal source and output the reference signal to the demodulation circuit. The vibrator includes a vibration substrate having a base portion and a vibration unit coupled to the base portion. The vibration unit vibrates along an in-plane direction of the vibration substrate and includes a side surface intersecting with the in-plane direction.

公开(公告)号：US20240044698A1

公开(公告)日：2024-02-08

申请号：US18364715

申请日：2023-08-03

Applicant: SEIKO EPSON CORPORATION

Inventor： Kohei YAMADA

IPC: G01H9/00 ,  G02B26/08

CPC classification number: G01H9/00 ,  G02B26/0808

Abstract: A laser interferometer includes: a light source configured to emit laser light; an optical modulator including a vibrator driven by a drive signal and configured to superimpose a modulation signal on the laser light; a photodetector configured to receive the laser light including the modulation signal and a sample signal derived from an object and output a light receiving signal; a calculator configured to demodulate the sample signal from the light receiving signal based on a reference signal; and a signal generator configured to output the drive signal and the reference signal. The optical modulator includes: the vibrator including a first vibration portion and a second vibration portion that vibrates in a phase opposite to that of the first vibration portion; a first optical modulator provided in the first vibration portion and configured to modulate the laser light; a second optical modulator provided in the second vibration portion and configured to modulate the laser light modulated by the first optical modulator; and a detour optical path configured to cause the laser light modulated by the first optical modulator to enter the second optical modulator.

公开(公告)号：US20240035889A1

公开(公告)日：2024-02-01

申请号：US18359191

申请日：2023-07-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Kohei YAMADA

IPC: G01J3/28 ,  G01J3/02

CPC classification number: G01J3/28 ,  G01J3/021

Abstract: An optical device includes: a first optical system; and a second optical system. The first optical system includes a first light splitting device configured to split measurement light emitted from a first light source into a first measurement light and a second measurement light and then mix the split measurement light, a first mirror configured to add a first modulation signal by being moved in an entering direction of the first measurement light and reflecting the first measurement light, a second mirror configured to reflect the second measurement light, and a first light receiving device configured to receive the measurement light including a sample-derived signal and the first modulation signal and output a first light receiving signal. The second optical system includes a second light source configured to emit laser light, an optical modulator configured to add a second modulation signal to the laser light, and a second light receiving device configured to receive the laser light including a displacement signal generated by reflection on the first mirror and the second modulation signal and output a second light receiving signal.

公开(公告)号：US20230085489A1

公开(公告)日：2023-03-16

申请号：US17898646

申请日：2022-08-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Kohei YAMADA

IPC: G01B9/02015 ,  G02B27/28 ,  G01B9/02002 ,  G02B26/08 ,  G02B27/30

Abstract: A laser interferometer includes: a laser light source; a collimator configured to generate collimated light; an optical modulator configured to modulate the collimated light into reference light having a different frequency; and a light receiving element configured to receive object light and the reference light and output a light receiving signal, in which when an optical axis of the collimated light is a first optical axis, when return light is generated, an optical axis of the return light is a second optical axis, a position at which the collimated light is generated is a reference position, the following equation (A) is satisfied: K 2 + 1 2 ⁢ ( R + 2 ⁢ L R ⁢ λ ) ≦ Δ ⁢ y ( A ) in which Δy is a shift width between the first optical axis and the second optical axis at the reference position, κ is an effective diameter of the collimator, R is a light diameter of the collimated light, L is a distance between the reference position and the optical modulator, and Λ is a wavelength of the collimated light.

公开(公告)号：US20220065892A1

公开(公告)日：2022-03-03

申请号：US17412355

申请日：2021-08-26

Applicant: Seiko Epson Corporation

Inventor： Kohei YAMADA

IPC: G01P15/093 ,  H01S5/00 ,  G02F1/11 ,  G02F2/00

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, and a demodulation circuit that performs a demodulation process for demodulating the sample signal from the light reception signal, and the demodulation circuit intermittently performs the demodulation process.