公开(公告)号：US12123892B2

公开(公告)日：2024-10-22

申请号：US17412355

申请日：2021-08-26

申请人： Seiko Epson Corporation

发明人： Kohei Yamada

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

CPC分类号： G01P15/093 ,  G02F1/11 ,  G02F2/00 ,  H01S5/0085

摘要： 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.

公开(公告)号：US12054684B2

公开(公告)日：2024-08-06

申请号：US17640985

申请日：2020-09-09

申请人： REMOSA S.R.L

发明人： Cristian Argiolas

IPC分类号： C10G75/00 ,  C10G11/00 ,  G01C19/56 ,  G01D5/353 ,  G01H9/00 ,  G01P15/093 ,  G01P15/18 ,  G01V1/18

CPC分类号： C10G75/00 ,  C10G11/00 ,  G01C19/56 ,  G01D5/35374 ,  G01H9/004 ,  G01P15/093 ,  G01P15/18 ,  G01V1/181

摘要： Apparatus for monitoring the erosion of components of industrial plants comprising at least one optical fiber sensor (7′), the optical fibers (7′) not being provided with any Bragg grid, and an analysis unit, wherein the at least one optical fiber sensor (7′) is positioned inside a wall subjected to wear by erosion in such a way as to terminate immediately under the surface of the wall itself belonging to the components (10, 10′, 20, 20′) to be monitored, and the erosion depth is measured by using the light reflected from the eroded end of the optical fiber (7′) itself.

公开(公告)号：US12050233B1

公开(公告)日：2024-07-30

申请号：US17368433

申请日：2021-07-06

申请人： Government of the United States, as represented by the Secretary of the Air Force ,  Utah State University Space Dynamics Laboratory

发明人： Maxwell D. Gregoire ,  Sean P. Krzyzewski ,  Brian L. Kasch ,  Charles W. Lewandowski

IPC分类号： G01P15/093 ,  H03B17/00 ,  H03L7/26

CPC分类号： G01P15/093 ,  H03B17/00 ,  H03L7/26

摘要： An accelerometer includes a vacuum chamber to receive one or more pairs of laser beams and a nanoparticle. Each laser beam includes an axis and a focus having three dimensions. The nanoparticle is trapped in an oscillating state in a substantially overlapping three-dimensional foci of the one or more pairs of laser beams. A processor calculates an acceleration of the nanoparticle based on changes in position of the oscillating nanoparticle. At least one photodetector identifies spatial coordinates of the oscillating nanoparticle. The at least one photodetector includes a plurality of photodetectors that are aligned to sense interference between light from a first laser beam and light from the first laser beam that is scattered by the oscillating nanoparticle. The one or more pairs of laser beams may be collinear. The one or more pairs of laser beams may be configured to point at each other.

公开(公告)号：US20240167853A1

公开(公告)日：2024-05-23

申请号：US18282673

申请日：2022-03-18

申请人： Somni Corporation B.V.

发明人： Eric Meijer ,  Bastiaan Meulblok ,  Germán Enrique Knoppers

IPC分类号： G01D5/353 ,  G01K11/3206 ,  G01L1/24 ,  G01P15/093

CPC分类号： G01D5/35316 ,  G01K11/3206 ,  G01L1/246 ,  G01P15/093

摘要： A fibre-optic sensor for measuring a physical quantity, such as a pressure, force, acceleration or tilt, includes an optical fibre having a measurement section for measuring a strain in the fibre, and first and second structural members. The optical fibre is connected to a first fibre connection section of the first structural member and to a second fibre connection section of the second structural member. The first and second connection sections are arranged on opposite sides of the measurement section, such that at least the measurement section is suspended between the first and second fibre connection sections. At least one of the structural members is movable relative to the other in dependence of the physical quantity that is measured. The structural members are made from materials having different coefficients of thermal expansion such that a temperature induced strain in said optical fibre due to a temperature change is reduced.

公开(公告)号：US11965905B2

公开(公告)日：2024-04-23

申请号：US17559943

申请日：2021-12-22

申请人： Advanced Semiconductor Engineering, Inc.

发明人： Shih-Chieh Tang

IPC分类号： G01P15/093 ,  G01H9/00 ,  G02B6/42

CPC分类号： G01P15/093 ,  G01H9/006 ,  G02B6/4246

摘要： An electronic module is provided. The electronic module includes a carrier, a movable component and an optical component. The movable component is on the carrier and configured to be movable with respect to the carrier. The optical component is configured to detect a movement of the movable component by an optical coupling between the optical component and the movable component.

公开(公告)号：US20230288445A1

公开(公告)日：2023-09-14

申请号：US17823054

申请日：2022-08-29

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Kei MASUNISHI ,  Yasushi TOMIZAWA ,  Etsuji OGAWA ,  Ryunosuke GANDO ,  Shiori KAJI ,  Hiroki HIRAGA ,  Fumito MIYAZAKI ,  Daiki ONO ,  Kengo UCHIDA

IPC分类号： G01P15/093

CPC分类号： G01P15/093 ,  G01P2015/0865

摘要： According to one embodiment, a sensor includes a stage, a driver, and a detector. The stage includes a first portion and a second portion. The driver is configured to rotate the stage. A rotation axis of the stage passes through the first portion and is along a first direction. A second direction from the first portion to the second portion crosses the first direction. The second portion is configured to rotate along a circumferential direction with the rotation axis as a center when the stage rotating. The detector is provided at the second portion. The detector includes a first detection element configured to detect a first acceleration including a component along the second direction, and a second detection element configured to detect a second acceleration including a component along the first direction.

公开(公告)号：US11718292B2

公开(公告)日：2023-08-08

申请号：US17114167

申请日：2020-12-07

申请人： GM Cruise Holdings LLC

发明人： Amanda Lind ,  Gabriel Andrew Rodriguez

IPC分类号： B60W30/095 ,  G01P15/093 ,  B60W60/00

CPC分类号： B60W30/0953 ,  B60W60/0015 ,  G01P15/093 ,  B60W2420/10 ,  B60W2422/90

摘要： Systems and methods are provided for using sensors and signal processing to detect vehicle surface impacts. In particular, a sensor and signal processing approach is provided for detecting impacts, with the results having a low false positive rate. The approach reduces operator costs by reducing operator involvement through improved automated detection technology. Additionally, systems and methods are provided for distinguishing chassis-driven fascia vibration from impact-driven fascia vibration.

公开(公告)号：US11709178B2

公开(公告)日：2023-07-25

申请号：US17717169

申请日：2022-04-11

申请人： Shenzhen Conjugate Technology Co., Ltd.

发明人： Hengjiang Ren ,  Jie Luo

IPC分类号： G01P15/00 ,  G01P15/093 ,  G01H9/00

CPC分类号： G01P15/093 ,  G01H9/004

摘要： An accelerometer structure, a method for preparing the accelerometer structure and an acceleration measurement method are provided. The accelerometer structure includes a substrate having a groove structure, a test mass, a plurality of nano-tethers, and a nano-photonic-crystal measurement unit. The test mass, nano-tethers, and the nano-photonic-crystal measurement unit are suspended above the groove structure. A nano-photonic-crystal resonant cavity is formed in the nano-photonic-crystal measurement unit, and an acceleration of the test mass is characterized by a resonant frequency of the nano-photonic-crystal resonant cavity. The present disclosure provides a photoelasticity-based opto-micromechanical accelerometer structure, which uses a cavity resonance tension sensor in a nano-photonic-crystal cavity to measure a tension of the nano-photonic-crystal resonant cavity. The tension is concentrated in the nano-photonic-crystal resonant cavity, which makes the measurement of the tension more accurate and the resolution higher. Photoelastic-optomechanical coupling is also increased due to the nano-photonic-crystal resonant cavity.

公开(公告)号：US20230194807A1

公开(公告)日：2023-06-22

申请号：US17559943

申请日：2021-12-22

申请人： Advanced Semiconductor Engineering, Inc.

发明人： Shih-Chieh TANG

IPC分类号： G02B6/42 ,  G01P15/093

CPC分类号： G02B6/4246 ,  G01P15/093

摘要： An electronic module is provided. The electronic module includes a carrier, a movable component and an optical component. The movable component is on the carrier and configured to be movable with respect to the carrier. The optical component is configured to detect a movement of the movable component by an optical coupling between the optical component and the movable component.

公开(公告)号：US11680961B2

公开(公告)日：2023-06-20

申请号：US17888940

申请日：2022-08-16

申请人： Zhejiang Lab ,  Zhejiang University

发明人： Yuanyuan Ma ,  Cuihong Li ,  Zhiming Chen ,  Yingying Wang ,  Xunmin Zhu ,  Huizhu Hu

IPC分类号： G01P15/09 ,  G21K1/00 ,  G01P15/093

CPC分类号： G01P15/093 ,  G21K1/006

摘要： A probe-based bidirectional electrophoretic force optical trap loading method includes steps of (1) detaching target particles from an upper electrode plate and capturing the target particles by a micro-scale probe based on a bidirectional electrophoretic force; (2) moving the probe with the target particles over an optical trap, applying a reverse electric field between the probe and the upper substrate electrode plate which is applied during a polar relaxation time of the target particles, and desorbing the target particles from the probe; and (3) turning on the optical trap, applying an electric field between the lower electrode plate and the upper electrode plate, adjusting the speed of the desorbed target particles through the electric field at which the optical trap is able to capture the desorbed target particles and the desorbed target particles moving to the effective capture range of the optical trap.