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52 条记录 (耗时 0.027 秒)

    Optical modulator gate array including multi-quantum well photodetector
    1.
    发明授权
    Optical modulator gate array including multi-quantum well photodetector 失效
    包括多量子阱光电探测器的光调制器门阵列

    公开(公告)号：US5451767A

    公开(公告)日：1995-09-19

    申请号：US928530

    申请日：1992-08-13

    申请人： Chikara Amano ,  Shinji Matsuo ,  Hideki Hukano ,  Takashi Kurokawa ,  Takeshi Yamada

    发明人： Chikara Amano ,  Shinji Matsuo ,  Hideki Hukano ,  Takashi Kurokawa ,  Takeshi Yamada

    IPC分类号： G02F1/017 ,  G02F3/00 ,  G02F3/02 ,  H01L27/144 ,  H03K19/14 ,  H01J31/50

    CPC分类号： B82Y20/00 ,  G02F1/01716 ,  G02F3/00 ,  G02F3/028 ,  H01L27/1443 ,  H03K19/14 ,  G02F2203/02

    摘要： An optical gate array includes a photodetector, an optical modulator, and a reflecting structure arranged therebetween. The photodetector, the optical modulator, and the reflecting structure are composed of semiconductor materials. The photodetector includes an MQW (Multi Quantum Well). The reflecting structure is constituted by a distributed Bragg reflector formed by alternately stacking semiconductor layers having different refractivities. The photodetector and the optical modulator are arranged to receive light from different directions. The modulation characteristics of the optical modulator are controlled by the intensity of light radiated on the photodetector. The reflecting structure connects the photodetector and the modulator electrically and isolates lights radiated on both parts. A plurality of optical gates, each constituted by the photodetector, the optical modulator, and the reflection structure, are two-dimensionally arranged.

    摘要翻译： 光栅阵列包括光电检测器，光调制器和布置在其间的反射结构。 光检测器，光调制器和反射结构由半导体材料组成。 光电检测器包括MQW（多量子阱）。 反射结构由通过交替堆叠具有不同折射率的半导体层形成的分布式布拉格反射体构成。 光检测器和光调制器布置成从不同方向接收光。 光调制器的调制特性由辐射在光检测器上的光的强度来控制。 反射结构将光电检测器和调制器电连接并隔离两部分辐射的光。 由光电检测器，光调制器和反射结构构成的多个光栅二维布置。

    Vertical-cavity surface-emitting semiconductor laser
    2.
    发明授权
    Vertical-cavity surface-emitting semiconductor laser 失效
    垂直腔表面发射半导体激光器

    公开(公告)号：US06846685B2

    公开(公告)日：2005-01-25

    申请号：US10372410

    申请日：2003-02-25

    申请人： Hiroyuki Uenohara ,  Kouta Tateno ,  Toshiaki Kagawa ,  Osamu Tadanaga ,  Chikara Amano ,  Takashi Kurokawa

    发明人： Hiroyuki Uenohara ,  Kouta Tateno ,  Toshiaki Kagawa ,  Osamu Tadanaga ,  Chikara Amano ,  Takashi Kurokawa

    IPC分类号： H01S5/183 ,  H01S5/227 ,  H01L21/00

    CPC分类号： H01S5/18308 ,  H01S5/18347 ,  H01S5/209 ,  H01S5/222 ,  H01S5/2222 ,  H01S5/2224 ,  H01S2301/166

    摘要： A vertical-cavity surface-emitting semiconductor laser has a substrate, a lower DBR structure portion having a plurality of layers provided on the substrate, a semiconductor buried structure portion provided over the lower DBR structure portion having at least one layer with buried therein an active layer, and an upper DBR structure portion having a plurality of layers provided over the semiconductor buried structure portion including the active layer. The active layer, at least one layer arranged over the active layer and at least one layer arranged beneath the active layer constitute an optical resonator region and each of the layers constituting the optical resonator region has an effective refractive index higher than respective effective refractive indices of other layers in the upper and lower DBR structure portions and a refractive index of the at least one layer constituting the semiconductor buried structure portion.

    摘要翻译： 垂直腔表面发射半导体激光器具有基板，具有设置在基板上的多个层的下DBR结构部分，设置在下DBR结构部分上的半导体掩埋结构部分，其具有埋入其中的至少一层活性物质 层和具有设置在包括有源层的半导体掩埋结构部分之上的多个层的上DBR结构部分。 有源层，布置在有源层上的至少一个层和布置在有源层下方的至少一个层构成光学谐振器区域，并且构成光学谐振器区域的每个层具有比相应的有效折射率高的有效折射率 上DBR结构部分和下DBR结构部分中的其它层以及构成半导体掩埋结构部分的至少一层的折射率。

    Distance measuring system
    7.
    发明授权
    Distance measuring system 失效
    距离测量系统

    公开(公告)号：US07679728B2

    公开(公告)日：2010-03-16

    申请号：US12224559

    申请日：2007-03-02

    申请人： Takashi Kurokawa

    发明人： Takashi Kurokawa

    IPC分类号： G01C3/08 ,  G01B11/14

    CPC分类号： G01S17/08 ,  G01C3/06 ,  G01S7/4818 ,  G01S7/497 ,  G01S17/87

    摘要： The distance detector 12b returns part of the light received from the distance detector 12a located at the starting point side by reflection, or reflection and refraction, sends the remaining part of the light to the distance detectors 12b, 12c, 12d and 12e located at the forefront end side by transmission, refraction, reflection or a combination thereof, and returns the returned light from the distance detectors 12b-12e to the distance detector 11a located at the starting point by transmission, refraction, reflection or a combination thereof. By using laser light sources, it is possible to measure the distance from the laser light sources to multiple points or the distance between two points with a high degree of accuracy.

    摘要翻译： 距离检测器12b通过反射或反射和折射来返回从位于起始点侧的距离检测器12a接收的部分光，将剩余部分的光发送到位于该位置处的距离检测器12b，12c，12d和12e 通过透射，折射，反射或其组合的前端侧，并且通过透射，折射，反射或其组合将来自距离检测器12b-12e的返回光返回到位于起点的距离检测器11a。 通过使用激光光源，可以以高精度测量从激光光源到多个点的距离或两点之间的距离。

    Distance Measuring System
    8.
    发明申请
    Distance Measuring System 失效
    距离测量系统

    公开(公告)号：US20090180099A1

    公开(公告)日：2009-07-16

    申请号：US12224559

    申请日：2007-03-02

    申请人： Takashi Kurokawa

    发明人： Takashi Kurokawa

    IPC分类号： G01C3/06 ,  G01S17/32 ,  G01C15/00

    CPC分类号： G01S17/08 ,  G01C3/06 ,  G01S7/4818 ,  G01S7/497 ,  G01S17/87

    摘要： The distance detector 12b returns part of the light received from the distance detector 12a located at the starting point side by reflection, or reflection and refraction, sends the remaining part of the light to the distance detectors 12b, 12c, 12d and 12e located at the forefront end side by transmission, refraction, reflection or a combination thereof, and returns the returned light from the distance detectors 12b-12e to the distance detector 11a located at the starting point by transmission, refraction, reflection or a combination thereof. By using laser light sources, it is possible to measure the distance from the laser light sources to multiple points or the distance between two points with a high degree of accuracy.

    摘要翻译： 距离检测器12b通过反射或反射和折射来返回从位于起始点侧的距离检测器12a接收的部分光，将剩余部分的光发送到位于该位置处的距离检测器12b，12c，12d和12e 通过透射，折射，反射或其组合的前端侧，并且通过透射，折射，反射或其组合将来自距离检测器12b-12e的返回光返回到位于起点的距离检测器11a。 通过使用激光光源，可以以高精度测量从激光光源到多个点的距离或两点之间的距离。

    Method and an apparatus for shape measurement, and a frequency comb light generator
    9.
    发明授权
    Method and an apparatus for shape measurement, and a frequency comb light generator 有权
    用于形状测量的方法和装置，以及频率梳光发生器

    公开(公告)号：US07440112B2

    公开(公告)日：2008-10-21

    申请号：US11659951

    申请日：2005-08-17

    申请人： Takashi Kurokawa ,  Yousuke Tanaka ,  Tatsutoshi Shiota

    发明人： Takashi Kurokawa ,  Yousuke Tanaka ,  Tatsutoshi Shiota

    IPC分类号： G01B9/02

    CPC分类号： G01B11/2441 ,  A61B5/0066 ,  A61B5/103 ,  A61B2562/0233

    摘要： A method and an apparatus for shape measurement that is able to observe the deep portion under a skin with high spatial resolution by using a frequency COMB light generator is provided. A frequency COMB light generator for generating multiple frequency COMBs with variable frequency pitch at high operation stability is provided.This apparatus for shape measurement comprises a frequency COMB light generator and an optical interferometer for measuring the distance. The frequency COMB light generator includes a laser light source 11, an optical resonator 13, a COMB pitch regulator 14 and an output port OUT. The optical resonator 13 includes an optical modulator 131, a first mirror M11, an optical fiber F13 which is drawn out from alight waveguide of the optical modulator. The COMB pitch regulator 14 is a modulation signal generator for varying the modulation signal. The optical fiber F13 is equipped with an apparatus (Faraday rotation mirror) for compensating a change in the polarization condition.

    摘要翻译： 提供了一种用于通过使用频率COMB光发生器能够以高空间分辨率观察皮肤下方深部的形状测量的方法和装置。 提供了一种用于在高运行稳定性下产生具有可变频率间距的多频率COMB的频率COMB光发生器。 这种用于形状测量的装置包括频率COMB光发生器和用于测量距离的光学干涉仪。 频率COMB光发生器包括激光光源11，光谐振器13，COMB音调调节器14和输出端口OUT。 光谐振器13包括光调制器131，第一反射镜M 11，从光调制器的光波导引出的光纤F 13。 COMB音调调节器14是用于改变调制信号的调制信号发生器。 光纤F13配备有用于补偿偏振状态变化的装置（法拉第旋转镜）。

    Voice transmission method and apparatus in duplex radio system
    10.
    发明授权
    Voice transmission method and apparatus in duplex radio system 失效
    双工无线电系统中的语音传输方法和装置

    公开(公告)号：US5355363A

    公开(公告)日：1994-10-11

    申请号：US27479

    申请日：1993-03-08

    申请人： Katsumi Takahashi ,  Takashi Kurokawa ,  Nobuo Sekiguchi ,  Kazuo Suzuka ,  Sakari Ohira ,  Kiyoyuki Isawa ,  Fujio Sumi ,  Kenichi Suzuki

    发明人： Katsumi Takahashi ,  Takashi Kurokawa ,  Nobuo Sekiguchi ,  Kazuo Suzuka ,  Sakari Ohira ,  Kiyoyuki Isawa ,  Fujio Sumi ,  Kenichi Suzuki

    IPC分类号： H04B1/56 ,  H04B1/66 ,  H04J3/22

    CPC分类号： H04B1/56 ,  H04B1/662

    摘要： A voice transmission method and apparatus in a duplex radio system are disclosed in which a voice signal to be transmitted in a constant period of time is subjected to 1/N time compression, N being a numeral not smaller than 2.0. The time-compressed voice signal is supplied to a transmitter as a modulating signal and a transmitting operation is performed by the transmitter in synchronism with a period of time when the modulating signal is inputted to the transmitter. A receiving operation of receiving a time-compressed and modulated signal transmitted from the transmitter to demodulate it is performed by a receiver in a period of time other than the period of time when the transmitting operation is performed. A demodulated signal is subjected to N-ple time expansion to obtain a reproduced receive voice signal, and both the transmitting operation and the receiving operation are repeated at the constant period of time. In the voice transmission method and apparatus, a predetermined band of a signal corresponding to said signal to be transmitted, which is in a voice band, is extracted with a predetermined band width. The extracted signal is shifted to any band which is in the voice band and is other than the extracted band. A signal corresponding to the shifted signal is supplied to the transmitter as the modulating signal.

    摘要翻译： 公开了一种在双工无线电系统中的语音传输方法和装置，其中要在一定时间内发送的语音信号经受1 / N时间压缩，N是不小于2.0的数字。 将时间压缩的语音信号作为调制信号提供给发射机，并且由发射机与调制信号输入到发射机的时间同步地执行发射操作。 从发送器发送的时间压缩和调制信号接收解调的接收操作由接收机在执行发送操作的时间段之外的时间段内执行。 对解调信号进行N次时间扩展，以获得再现的接收语音信号，并且在恒定时间段重复发送操作和接收操作。 在语音传输方法和装置中，以预定的带宽提取与声音频带中的要发送的信号相对应的信号的预定频带。 所提取的信号被移动到在声频带中的任何频带，并且不是所提取的频带。 与移位信号相对应的信号作为调制信号提供给发射机。