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1.发明申请公开(公告)号：US20200232845A1
公开(公告)日：2020-07-23
申请号：US16088381
申请日：2016-05-12
发明人： Keita MOCHIZUKI
IPC分类号： G01J1/04 , G02B6/42 , H01S5/0687 , G01J3/26
摘要： A wavelength monitor includes: a wavelength tunable laser (1) having a plurality of emitting ports (10, 11), from which laser beams of the same wavelength are emitted; collimating lenses (20, 21), which are configured to collimate the laser beams emitted from the emitting ports (10, 11) to emit the collimated laser beams; an optical filter (4) having a periodic transmittance with respect to a frequency, on which the laser beams emitted from the collimating lenses (20, 21) are incident; and an optical detector (5) configured to receive the laser beams that have passed through the optical filter (4) to detect light intensities of the laser beams. In the wavelength monitor, the collimating lenses (20, 21) and the optical filter (4) are disposed so that the laser beams are incident on the optical filter (4) while a condition expressed as Equation (1) is satisfied.
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公开(公告)号：US20190086369A1
公开(公告)日：2019-03-21
申请号：US16087814
申请日：2016-04-22
IPC分类号： G01N29/24
CPC分类号： G01N29/2412 , G01N29/24 , G01N2291/2626
摘要： In a rope damage diagnostic testing apparatus, an ultrasound applicator generates ultrasonic waves in a wire rope by making the wire rope vibrate due to magnetostriction effect. A detecting element detects changes in a state of propagation of the ultrasonic waves in the wire rope. An excitation coil and the detecting element are disposed in a parallelogram that has as a first opposite side length a length of a portion of the wire rope in which one of the outer layer strands makes one revolution around the wire rope, and that has as a second opposite side length a product of a diameter and number of the outer layer wires that are included in one of the outer layer strands.
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公开(公告)号：US20240255278A1
公开(公告)日：2024-08-01
申请号：US18290457
申请日：2021-05-20
发明人： Yuya ARAI , Hiroyuki KAWANO , Keita MOCHIZUKI
IPC分类号： G01B11/25
CPC分类号： G01B11/2545
摘要： A shape measuring device includes: a first light radiating unit to radiate first line light and second line light: a first image capturing unit to capture an object; and a measuring unit to measure a shape of the object on a basis of a first image and second images.
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公开(公告)号：US20230361524A1
公开(公告)日：2023-11-09
申请号：US18043018
申请日：2020-11-24
发明人： Ryosuke NAGAO , Keita MOCHIZUKI , Takashi NAGIRA
CPC分类号： H01S3/10053 , H01S5/141 , H01S5/50 , H01S5/0612
摘要： An optical semiconductor device according to the present disclosure includes a semiconductor substrate, at least one semiconductor laser provided on the semiconductor substrate, an optical multiplexer/demultiplexer circuit provided on the semiconductor substrate, multiplexing or demultiplexing first output light of the semiconductor laser and outputting second output light and third output light, a first waveguide portion provided on the semiconductor substrate, and outputting the second output light from an end face of the semiconductor substrate, and a second waveguide portion including an optical amplifier amplifying the third output light and a reflecting portion and provided on the semiconductor substrate, wherein the reflecting portion includes a diffraction grating that reflects the third output light amplified by the optical amplifier to feed back to the semiconductor laser via the optical amplifier and the optical multiplexer/demultiplexer circuit, and the semiconductor laser and the reflecting portion form a resonator.
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公开(公告)号：US20200142184A1
公开(公告)日：2020-05-07
申请号：US16095768
申请日：2016-07-11
发明人： Yoshiya SATO , Keita MOCHIZUKI
摘要： An optical circuit includes an input waveguide, an arrayed waveguide including a plurality of output waveguides, a coupler, an electrode capable of applying a voltage to each of the output waveguides of the arrayed waveguide, and a chip unit to which the input waveguide, the coupler, and a portion of the arrayed waveguide are fixed. The arrayed waveguide is divided into a phase shifter portion capable of generating a predetermined phase difference between adjacent ones of the output waveguides, a beam portion having a cantilever structure that is not fixed by the chip unit, and a waveguide portion between the phase shifter portion and the beam portion. The electrode is capable of applying positive and negative voltages to the beam portion of the arrayed waveguide such that positive and negative voltages are alternately applied to adjacent ones of the output waveguides.
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公开(公告)号：US20240235152A1
公开(公告)日：2024-07-11
申请号：US18558278
申请日：2021-06-28
发明人： Koichi NAKAMURA , Keita MOCHIZUKI
IPC分类号： H01S5/026 , H01S5/02325
CPC分类号： H01S5/0262 , H01S5/02325
摘要： An optical semiconductor device comprises a semiconductor laser mounted on a bottom portion of a package, a receiving unit that receives a signal light from an outside using local oscillator light output from the laser, and a receiving-unit-mounted substrate on which the receiving unit including a semiconductor light receiving element is mounted. The receiving unit is disposed on a surface on the side opposite to the laser. The light receiving-unit-mounted substrate is a non-transmissive substrate, has a light passing portion through which the local oscillator light output from the laser passes, and covers the bottom portion surrounded by an outer peripheral portion of the package.
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公开(公告)号：US20230305355A1
公开(公告)日：2023-09-28
申请号：US18007460
申请日：2020-11-19
发明人： Keita MOCHIZUKI , Takashi NAGIRA
CPC分类号： G02F1/212 , G02F1/0136 , G02F1/0121 , G02F2203/50 , G02F2203/15 , G02F2201/305 , G02F2201/18 , G02F2203/70
摘要： An optical semiconductor device includes an optical modulator provided on a substrate, an optical waveguide provided on the substrate, one end of the optical waveguide being connected to a light emission side of the optical modulator and another end of the optical waveguide being present at an end portion of the substrate, a phase adjusting unit provided on a path of the optical waveguide and an optical amplification unit provided on the path of the optical waveguide, wherein a minimum value or a maximum value of a transmittance spectrum having a ripple that periodically fluctuates with respect to a frequency because of multiple reflection of light that occurs between the one end and the other end of the optical waveguide is matched with a wavelength of the light input to the optical modulator by phase adjustment of the phase adjusting unit, and an error vector amplitude is minimized.
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公开(公告)号：US20210013694A1
公开(公告)日：2021-01-14
申请号：US17032858
申请日：2020-09-25
发明人： Kei MASUYAMA , Kiyotomo HASEGAWA , Keita MOCHIZUKI
摘要： An optical module includes a package including a first member made of a metal material and a second member made of a non-conductive material, the second member facing the first member; a temperature controller fixed in such a manner that one end surface of the temperature controller comes into contact with a surface in a direction of the second member in the first member; a carrier made of a non-conductive material and fixed in such a manner that one end surface of the carrier comes into contact with a surface in an opposite direction to the first member in the temperature controller; and a semiconductor element disposed in either one of a direction of the first member and the opposite direction to the first member with respect to the carrier, and fixed in such a manner that one end surface of the semiconductor element comes into contact with a surface in a direction of the first member in the carrier or a surface in the opposite direction to the first member in the carrier, or in such a manner that one end surface of the semiconductor element comes into contact with a surface in the opposite direction to the carrier in a submount made of a non-conductive material and fixed in such a manner that the submount comes in contact with a surface in a direction of the first member in the carrier or a surface in the opposite direction to the first member in the carrier.
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公开(公告)号：US20170137257A1
公开(公告)日：2017-05-18
申请号：US15305042
申请日：2014-05-21
IPC分类号： B66B5/00
CPC分类号： B66B5/0018 , B66B1/36 , B66B9/00
摘要： A detection subject body provided in a hoistway includes an ID sequence formed by arranging three or more types of segments having different magnetic properties in a movement direction of an elevating body. An eddy current type detection unit is provided on the elevating body to generate signals corresponding to the magnetic properties of the respective segments. An identification unit identifies the respective types of the segments on the basis of the signals from the detection unit, and outputs a time series signal in a different output condition depending on the type of each segment. A digital data conversion unit converts the time series signal into digital data, on the basis of variations in the output condition of the time series signal from the identification unit. A position specification unit specifies the position of the elevating body on the basis of the digital data.
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公开(公告)号：US20170066625A1
公开(公告)日：2017-03-09
申请号：US15120472
申请日：2014-11-27
发明人： Akihide SHIRATSUKI , Keita MOCHIZUKI , Jin INOUE , Hiroshi TAGUCHI , Makito SEKI , Masahiro ISHIKAWA
CPC分类号： B66B1/3492 , B66B5/0018 , B66B5/0031
摘要： A detection subject body includes a first detection subject plate provided with an ID sequence and a second detection subject plate provided with a clock sequence. A detector includes a first detection unit that outputs, as an ID signal, a time series signal that switches condition in a boundary position between a first property portion and a second property portion of the ID sequence when the ID sequence passes through a first detection region, and a second detection unit that outputs, as a clock signal, a time series signal that switches condition in a boundary position between a first property portion and a second property portion of the clock sequence when the clock sequence passes through a second detection region. A processing unit specifies a position of the elevating body by reading the condition of the ID signal in a position where the condition of the clock signal switches.
摘要翻译： 检测对象体包括设置有ID序列的第一检测对象板和设置有时钟序列的第二检测对象板。 检测器包括：第一检测单元，其作为ID信号输出当ID序列经过第一检测区域时切换ID序列的第一属性部分和第二属性部分之间的边界位置的条件的时间序列信号 以及第二检测单元，当时钟序列经过第二检测区域时，输出时钟序列中的时钟序列的第一属性部分和第二属性部分之间的边界位置中的状态的时间序列信号作为时钟信号。 处理单元通过在时钟信号的条件切换的位置读取ID信号的条件来指定升降体的位置。
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