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    POSITION TRANSDUCER
    1.
    发明申请
    POSITION TRANSDUCER 有权
    位置传感器

    公开(公告)号：US20150153204A1

    公开(公告)日：2015-06-04

    申请号：US14389741

    申请日：2013-10-25

    申请人： CITIZEN CHIBA PRECISION CO., LTD. ,  CITIZEN HOLDINGS CO., LTD.

    发明人： Hideaki Sato ,  Kazunari Ogata ,  Naoki Ohta ,  Asuka Moritaku ,  Tomonori Takeda

    IPC分类号： G01D5/347

    CPC分类号： G01D5/3473 ,  G01D3/036 ,  G01D5/30 ,  G01D5/341 ,  G01D5/34715

    摘要： Provided is a position transducer which can be manufactured at low cost, improve the signal-to-noise ratio of an output obtained from a detector, and obtain a stable output even if the temperature changes. A position transducer 100 includes a butterfly-shaped reflector 7 attached to a rotating shaft 2 of a rotation restriction motor 1, an LED die 4 disposed to face a central portion of the reflection surface of the reflector 7, a diffused-light absorbing member disposed on the surfaces of a diffused light absorber 3 and a case 5, installed on the fixed side of the motor 1 so as to surround the reflector 7 with a distance from the reflector 7 at the rear of the reflector 7 as viewed from the LED die 4 and absorbing illumination light from the LED die 4 which has not illuminated the reflection surface, and detectors 11 mounted on the same printed circuit board 6 as the LED die 4 to detect an image reflected by the reflector 7.

    摘要翻译： 提供一种可以以低成本制造的位置传感器，提高从检测器获得的输出的信噪比，并且即使温度改变也能获得稳定的输出。 位置传感器100包括安装在旋转限制电动机1的旋转轴2上的蝶形反射器7，设置成面向反射器7的反射面的中心部分的LED管芯4，设置在散射光吸收部件 在散射光吸收体3和壳体5的表面上，安装在电动机1的固定侧，以便从LED模具观察到的方式围绕反射器7与反射器7后面的反射器7距离 并且吸收来自没有照射反射面的LED管芯4的照明光和安装在与LED管芯4相同的印刷电路板6上的检测器11，以检测由反射器7反射的图像。

    POSITION TRANSDUCER AND METHOD FOR MANUFACTURING THE SAME
    2.
    发明申请
    POSITION TRANSDUCER AND METHOD FOR MANUFACTURING THE SAME 有权

    公开(公告)号：US20230081307A1

    公开(公告)日：2023-03-16

    申请号：US17796178

    申请日：2021-03-09

    申请人： Citizen Chiba Precision Co., Ltd. ,  CITIZEN WATCH CO., LTD.

    发明人： Kazunari OGATA ,  Shougo KIMURA ,  Kaori FUNATSU

    IPC分类号： G01D5/28 ,  G01D5/30

    摘要： The range of operating angles of a position transducer is widened, and its signal-to-noise ratio is improved. The position transducer includes a light source and a detector including at least one pair of photodiodes (PDs) disposed on a predetermined circle. The detector receives light emitted from the light source to output a signal varying depending on the areas of regions where the light is received on two PDs forming a pair. The PDs are formed on separate chips, respectively, and the chips are disposed on a substrate so that one or more pairs of PDs surround the entirety of a predetermined region and have an annular shape as a whole.

    Position transducer
    3.
    发明授权
    Position transducer 有权
    位置传感器

    公开(公告)号：US09097561B2

    公开(公告)日：2015-08-04

    申请号：US14389741

    申请日：2013-10-25

    申请人： CITIZEN CHIBA PRECISION CO., LTD. ,  CITIZEN HOLDINGS CO., LTD.

    发明人： Hideaki Sato ,  Kazunari Ogata ,  Naoki Ohta ,  Asuka Moritaku ,  Tomonori Takeda

    IPC分类号： G01D5/347 ,  G01D5/30 ,  G01D3/036

    CPC分类号： G01D5/3473 ,  G01D3/036 ,  G01D5/30 ,  G01D5/341 ,  G01D5/34715

    摘要： Provided is a position transducer which can be manufactured at low cost, improve the signal-to-noise ratio of an output obtained from a detector, and obtain a stable output even if the temperature changes. A position transducer 100 includes a butterfly-shaped reflector 7 attached to a rotating shaft 2 of a rotation restriction motor 1, an LED die 4 disposed to face a central portion of the reflection surface of the reflector 7, a diffused-light absorbing member disposed on the surfaces of a diffused light absorber 3 and a case 5, installed on the fixed side of the motor 1 so as to surround the reflector 7 with a distance from the reflector 7 at the rear of the reflector 7 as viewed from the LED die 4 and absorbing illumination light from the LED die 4 which has not illuminated the reflection surface, and detectors 11 mounted on the same printed circuit board 6 as the LED die 4 to detect an image reflected by the reflector 7.

    摘要翻译： 提供一种可以以低成本制造的位置传感器，提高从检测器获得的输出的信噪比，并且即使温度改变也能获得稳定的输出。 位置传感器100包括安装在旋转限制电动机1的旋转轴2上的蝶形反射器7，设置成面向反射器7的反射面的中心部分的LED管芯4，设置在散射光吸收部件 在散射光吸收体3和壳体5的表面上，安装在电动机1的固定侧，以便从LED模具观察到的方式围绕反射器7与反射器7后面的反射器7距离 并且吸收来自没有照射反射面的LED管芯4的照明光和安装在与LED管芯4相同的印刷电路板6上的检测器11，以检测由反射器7反射的图像。