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    Wavelength-division multiplex digital optical position sensor
    1.
    发明授权
    Wavelength-division multiplex digital optical position sensor 失效
    波分复用数字光学位置传感器

    公开(公告)号：US5498867A

    公开(公告)日：1996-03-12

    申请号：US345413

    申请日：1994-11-21

    申请人： Takeo Senuma ,  Shinichiro Ina ,  Hiroshi Nakazawa ,  Yasuaki Tamura ,  Kunihiko Mano ,  Fumio Nakamura ,  Munenori Ishikawa ,  Yoshiharu Kubo

    发明人： Takeo Senuma ,  Shinichiro Ina ,  Hiroshi Nakazawa ,  Yasuaki Tamura ,  Kunihiko Mano ,  Fumio Nakamura ,  Munenori Ishikawa ,  Yoshiharu Kubo

    IPC分类号： G01D5/347 ,  G01D5/34

    CPC分类号： G01D5/34776 ,  G01D5/34715

    摘要： According to a first aspect of the invention, an optical position sensor employs a position encoder having collimators and reflectors with mutually aligned optical axes mounted in a support. A slotted code plate moves between the collimators and reflectors in a plane non-perpendicular to their optic axes. This encoder converts position to optical signals reliably, regardless of mechanical shock or vibration. According to a second aspect of the invention, an optical position sensing system employs wavelength-division multiplexing to distribute light pulses to different position encoders and time-division multiplexing to further distribute pluses to the collimators in each encoder. This permits multiple position encoders to be served by a single light source and optical fiber.

    摘要翻译： 根据本发明的第一方面，光学位置传感器采用具有准直器和反射器的位置编码器，其具有安装在支撑件中的彼此对准的光轴。 开槽代码板在与其光轴不垂直的平面中在准直器和反射器之间移动。 无论机械冲击或振动如何，该编码器将位置转换为光信号。 根据本发明的第二方面，光学位置感测系统使用波分复用将光脉冲分配到不同的位置编码器和时分复用，以进一步将优点分配给每个编码器中的准直仪。 这允许多个位置编码器由单个光源和光纤提供。

    Optical coupler for optical direct amplifier
    4.
    发明授权
    Optical coupler for optical direct amplifier 失效
    光学直接放大器的光耦合器

    公开(公告)号：US4805977A

    公开(公告)日：1989-02-21

    申请号：US115769

    申请日：1987-11-02

    申请人： Yasuaki Tamura ,  Kiyofumi Mochizuki

    发明人： Yasuaki Tamura ,  Kiyofumi Mochizuki

    IPC分类号： G02B27/28 ,  G02B6/34 ,  G02F1/35 ,  H01S3/30 ,  H01S5/00 ,  G02B6/28

    CPC分类号： G02B6/4246 ,  G02B6/29362 ,  G02B6/29367 ,  H01S3/302

    摘要： A high power pump light source for optical direct amplifier using the stimulated Raman effect is obtained by using a plurality of semiconductor lasers each of which provides low output power. More than two beams of the same wavelength generated by semiconductor lasers are combined (polarization multiplex) by using a polarization prism block, which provides sufficient high power pump light for the stimulated Raman effect amplifier. The output of said polarization prism block is wavelength division multiplexed with signal light to be amplified by using an interference filter block, the output of which is applied to a transmission optical fiber in which amplification of said signal light is effected.

    OPTICAL MODULE
    5.
    发明申请
    OPTICAL MODULE 有权
    光学模块

    公开(公告)号：US20100322569A1

    公开(公告)日：2010-12-23

    申请号：US12666583

    申请日：2008-06-30

    申请人： Takaharu Ohyama ,  Yoshiyuki Doi ,  Ikuo Ogawa ,  Akimasa Kaneko ,  Yasuaki Tamura ,  Yuichi Suzuki

    发明人： Takaharu Ohyama ,  Yoshiyuki Doi ,  Ikuo Ogawa ,  Akimasa Kaneko ,  Yasuaki Tamura ,  Yuichi Suzuki

    IPC分类号： G02B6/36

    CPC分类号： G02B6/42 ,  G02B6/12019 ,  G02B6/30 ,  G02B6/4201 ,  G02B6/4267 ,  G02B6/4268 ,  G02B6/4281 ,  G02B6/4283 ,  H01L2224/48091 ,  H01S5/02208 ,  H01S5/02248 ,  H01S5/02284 ,  H01L2924/00014

    摘要： An optical module has a structure for reducing the stress applied to a package. The optical module is structured so that an end face of a waveguide (37) of a planar lightwave circuit (30) is joined to a plurality of packages (40) storing therein optical elements so that the waveguide is optically coupled to the optical elements. The optical module includes a housing (3) storing therein a planar lightwave circuit and a plurality of packages in which an upper face of a protrusion (270) formed in the bottom section is fixed to the planar lightwave circuit (30). Each of the plurality of packages (40) is electrically connected to an electric part (22) provided in the housing (3) via flexible printed circuits (271a, 271b).

    摘要翻译： 光学模块具有用于减小施加到包装上的应力的结构。 光学模块被构造成使得平面光波电路（30）的波导（37）的端面与存储有光学元件的多个封装（40）接合，使得波导光耦合到光学元件。 光学模块包括容纳有平面光波电路的壳体（3）和形成在底部的突起（270）的上表面固定在平面光波回路（30）上的多个封装体。 所述多个封装体（40）中的每一个通过柔性印刷电路（271a，271b）电连接到设置在所述壳体（3）中的电气部件（22）。

    ARRAY-TYPE PHOTO MODULE
    6.
    发明申请
    ARRAY-TYPE PHOTO MODULE 有权
    阵列型照片模块

    公开(公告)号：US20120257855A1

    公开(公告)日：2012-10-11

    申请号：US13410131

    申请日：2012-03-01

    申请人： Yuto Yamashita ,  Keiichi Sasaki ,  Etsuo Ogino ,  Yasuaki Tamura ,  Yuji Akahori ,  Yuichi Suzuki

    发明人： Yuto Yamashita ,  Keiichi Sasaki ,  Etsuo Ogino ,  Yasuaki Tamura ,  Yuji Akahori ,  Yuichi Suzuki

    IPC分类号： G02B6/32

    CPC分类号： G02B6/425 ,  G02B6/4215

    摘要： PROBLEMAn object of the present invention is to easily and inexpensively manufacture an array-type photo module and, in addition, coexist high-density array and low crosstalk.SOLUTIONThe present invention provides an array-type photo module M including a filter 31, which, in each channel, transmits therethrough a portion of emitting light from an incident optical fiber 11 on the opposite side of a gradient-index lens array 2 and reflects another portion of the emitting light from the incident optical fiber 11 toward the gradient-index lens array 2, and a light-shielding member 32 (33) which is arranged on the opposite side of the gradient-index lens array 2 of the filter 31 so as to be spaced from the filter 31 and, in each channel, has an opening 34 (35) passing therethrough transmitted light from the filter 31 on the opposite side of the filter 31.

    摘要翻译： 发明内容本发明的目的在于容易且廉价地制造阵列型照相模块，另外共存高密度阵列和低串扰。 解决方案本发明提供一种阵列型光模块M，其包括滤光器31，滤光器31在每个通道中透过其中一部分发射光，该入射光纤11位于梯度折射率透镜阵列2的相对侧并反射 来自入射光纤11的发光的另一部分朝向梯度折射率透镜阵列2，以及设置在滤光器31的梯度折射率透镜阵列2的相反侧的遮光部件32（33） 与过滤器31隔开，并且在每个通道中具有穿过过滤器31的相反侧上的来自过滤器31的透射光的开口34（35）。

    Bidirectional optical module and optical time domain reflectometer
    7.
    发明授权
    Bidirectional optical module and optical time domain reflectometer 有权
    双向光模块和光时域反射计

    公开(公告)号：US07853104B2

    公开(公告)日：2010-12-14

    申请号：US12348686

    申请日：2009-01-05

    申请人： Katsushi Oota ,  Haruo Shibuya ,  Yasuaki Tamura ,  Shunji Sakai

    发明人： Katsushi Oota ,  Haruo Shibuya ,  Yasuaki Tamura ,  Shunji Sakai

    IPC分类号： G02B6/42

    CPC分类号： G02B6/4206 ,  G01M11/3127 ,  G01M11/3181 ,  G02B6/4208 ,  G02B6/4246

    摘要： A bidirectional optical module according to the present invention emits light to an optical fiber and allows returning light from the optical fiber to enter and includes a plurality of light emitting elements that emit light to enter the optical fiber, a light receiving element that receives light having exited the optical fiber, and a non-reciprocal unit for making an optical path in a forward direction from the light emitting element to the optical fiber and an optical path in a backward direction from the optical fiber to the light emitting element different. Then, polarization planes of light incident on the optical fiber after being emitted from the plurality of light emitting elements are mutually orthogonal, and the non-reciprocal unit emits returning light of light emitted from the plurality of light emitting elements from the optical fiber toward the light receiving element to one light receiving element.

    摘要翻译： 根据本发明的双向光模块向光纤发射光，并允许从光纤返回的光进入并包括发射光的多个发光元件进入光纤;光接收元件，其接收具有 退出光纤，并且用于使从光发射元件到光纤的向前方向的光路和从光纤到发光元件的向后方向的光路不同的不可逆单元。 然后，从多个发光元件发射后入射到光纤上的光的偏振面相互正交，并且不可逆单元将从多个发光元件发射的光的光从光纤朝向 光接收元件连接到一个光接收元件。

    BIDIRECTIONAL OPTICAL MODULE AND OPTICAL TIME DOMAIN REFLECTOMETER
    8.
    发明申请
    BIDIRECTIONAL OPTICAL MODULE AND OPTICAL TIME DOMAIN REFLECTOMETER 有权
    双向光学模块和光学时域反射仪

    公开(公告)号：US20100172614A1

    公开(公告)日：2010-07-08

    申请号：US12348686

    申请日：2009-01-05

    申请人： Katsushi Oota ,  Haruo Shibuya ,  Yasuaki Tamura ,  Shunji Sakai

    发明人： Katsushi Oota ,  Haruo Shibuya ,  Yasuaki Tamura ,  Shunji Sakai

    IPC分类号： G02B6/26 ,  G01N21/00

    CPC分类号： G02B6/4206 ,  G01M11/3127 ,  G01M11/3181 ,  G02B6/4208 ,  G02B6/4246

    摘要： A bidirectional optical module according to the present invention emits light to an optical fiber and allows returning light from the optical fiber to enter and includes a plurality of light emitting elements that emit light to enter the optical fiber, a light receiving element that receives light having exited the optical fiber, and a non-reciprocal unit for making an optical path in a forward direction from the light emitting element to the optical fiber and an optical path in a backward direction from the optical fiber to the light emitting element different. Then, polarization planes of light incident on the optical fiber after being emitted from the plurality of light emitting elements are mutually orthogonal, and the non-reciprocal unit emits returning light of light emitted from the plurality of light emitting elements from the optical fiber toward the light receiving element to one light receiving element.

    摘要翻译： 根据本发明的双向光模块向光纤发射光，并允许从光纤返回的光进入并包括发射光的多个发光元件进入光纤;光接收元件，其接收具有 退出光纤，并且用于使从光发射元件到光纤的向前方向的光路和从光纤到发光元件的向后方向的光路不同的不可逆单元。 然后，从多个发光元件发射后入射到光纤上的光的偏振面相互正交，并且不可逆单元将从多个发光元件发射的光的光从光纤朝向 光接收元件连接到一个光接收元件。

    Optical amplifier
    9.
    发明授权
    Optical amplifier 失效
    光放大器

    公开(公告)号：US5089786A

    公开(公告)日：1992-02-18

    申请号：US540498

    申请日：1990-06-19

    申请人： Yasuaki Tamura

    发明人： Yasuaki Tamura

    IPC分类号： G02B6/26 ,  G02F1/09 ,  G02F1/35 ,  H01S5/00 ,  H01S5/50

    CPC分类号： G02B6/2746 ,  G02F1/093 ,  H01S5/5018 ,  G02F2203/06

    摘要： In an optical amplifier, light incident on a first port of a port separator is emitted out of a third port, and is input into and amplified in a semiconductor laser. Amplified light receives the first amount of rotation, e.g., a 45.degree. rotation, of the direction of polarization in a Faraday rotator assembly and is emitted outward. Light emitted out of the Faraday rotator assembly is reflected by the reflector. Passed through the Faraday rotator assembly backward, receives the second amount of rotation, e.g., a further 45.degree. rotation, of the direction of polarization in the same direction as the previous rotation, and is input into the semiconductor laser. The input light is amplified again in the semiconductor laser, is input in the third port of the port separator, and is emitted outward from a second port. The direction of polarization of light passing forward and backward through the semiconductor laser are orthogonal to each other, and therefore amplification will be done at a constant degree of amplification, regardless of the direction of polarization.

    Degassing apparatus for removing dissolved gas from liquids
    10.
    发明授权
    Degassing apparatus for removing dissolved gas from liquids 有权

    公开(公告)号：US11311821B2

    公开(公告)日：2022-04-26

    申请号：US16464851

    申请日：2017-11-02

    申请人： Minoru Tamura ,  Yasuaki Tamura

    发明人： Minoru Tamura ,  Yasuaki Tamura

    IPC分类号： B01D19/00 ,  C02F1/20

    摘要： The degassing apparatus removes liquid from a vacuum tank (1) with a suction pump (6) and supplies that liquid to a storage tank (9), sprays storage tank liquid into the vacuum tank through a convergent nozzle (7), removes gas from liquid in a state of reduced pressure inside the vacuum tank, and stores the degassed liquid in the storage tank. The storage tank is an airtight hermetically sealed tank provided with a reduced pressure retaining valve that discharges gas accumulated inside the storage tank.