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    Shaft encoder with diffusely placed light sensitive elements
    1.
    发明授权
    Shaft encoder with diffusely placed light sensitive elements 失效
    轴编码器具有漫反射光敏元件

    公开(公告)号：US4496835A

    公开(公告)日：1985-01-29

    申请号：US388699

    申请日：1982-06-15

    申请人： Marcello Boella ,  Paolo Rivera

    发明人： Marcello Boella ,  Paolo Rivera

    IPC分类号： G01D5/36 ,  G01D5/34

    CPC分类号： G01D5/34

    摘要： An optical transducer for detecting the angular position of a rotary member with respect to a fixed structure comprises a disc 13 mounted rotatably within a casing. The disc is provided with a plurality of opaque radial regions 19 which are spaced by transparent regions 18 which transmit the light emitted by a light source mounted on the casing. The light is received by a photodetector element 25 comprising a support plate 28 on which is disposed a multiplicity of photovoltaic cells 26 each having an area which is fraction of the area of each transparent region of the disc. The cells are subdivided into the groups A, B and C with different functions and phase positions and are distributed diffusely over the area encountered by the beam of light from the light source. The cells of each group are connected together in parallel to generate three electrical signals, one of which provides pilot control for the feed to the light source to stabilize the signals of the other two groups of photoelectric cells.

    摘要翻译： 用于检测旋转构件相对于固定结构的角位置的光学换能器包括可旋转地安装在壳体内的盘13。 盘设置有多个不透明径向区域19，其透明透明区域18，透明区域18透射由安装在壳体上的光源发射的光。 光被包括支撑板28的光电检测器元件25接收，在支撑板28上设置有多个光伏电池26，每个光伏电池26具有的是盘的每个透明区域的面积的一部分的面积。 这些单元被细分为具有不同功能和相位位置的组A，B和C，并且被散布地分布在由光源的光束遇到的区域上。 每个组的单元并联连接在一起以产生三个电信号，其中之一提供用于馈送到光源的导频控制，以稳定另外两组光电单元的信号。

    Optical position transducer having a plurality of photodetector cells of varying area
    2.
    发明授权
    Optical position transducer having a plurality of photodetector cells of varying area 失效
    具有多个不同面积的光电检测器单元的光学位置传感器

    公开(公告)号：US4650993A

    公开(公告)日：1987-03-17

    申请号：US652098

    申请日：1984-09-19

    申请人： Marcello Boella ,  Paolo Rivera

    发明人： Marcello Boella ,  Paolo Rivera

    IPC分类号： G01D5/36 ,  G01D5/34

    CPC分类号： G01D5/36

    摘要： An optical transducer for detecting the position of a rotary or translatory member comprises a light source, a photodetector group, and a shutter provided with a series of transparent elements spaced by opaque regions and interposed between the light source and the photodetector group. The photodetector group comprises an integrated circuit, on a surface of which is disposed a plurality of photovoltaic cells, each having an area which is a fraction of the area of each transparent element. The cells are divided into four groups to generate as many electrical signals which are out of phase relative to each other by 90.degree. and which are indicative of the position of the shutter with respect to the position of the photodetector group and the light source. The cells are disposed symmetrically with respect to a central radially extending optical axis, and in such a way that the barycenter of the areas of each of the four groups is included in the central optical axis. The sum of the four electrical signals is also used as feedback for controlling the power supply for the light source.

    摘要翻译： 用于检测旋转或平移构件的位置的光学换能器包括光源，光电检测器组以及设置有由不透明区域间隔开并插入在光源和光电检测器组之间的一系列透明元件的遮板。 光电检测器组包括集成电路，其表面设置有多个光伏电池，每个光伏电池具有作为每个透明元件的面积的一部分的面积。 电池被分成四组，以产生彼此相差90度的多个电信号，这些电信号指示快门相对于光电检测器组和光源的位置的位置。 单元相对于中心径向延伸的光轴对称设置，并且使得四组中的每一个的区域的重心被包括在中心光轴中。 四个电信号的总和也用作用于控制光源的电源的反馈。

    Optical transducer with a transparent shutter disk
    3.
    发明授权
    Optical transducer with a transparent shutter disk 失效
    具有透明快门盘的光学传感器

    公开(公告)号：US4536650A

    公开(公告)日：1985-08-20

    申请号：US461137

    申请日：1983-01-26

    申请人： Ugo Carena ,  Paolo Rivera

    发明人： Ugo Carena ,  Paolo Rivera

    IPC分类号： G01D5/347 ,  G01D5/34

    CPC分类号： G01D5/347

    摘要： An optical transducer for detecting the angular position of a rotary member with respect to a fixed structure, which comprises a shutter disc of transparent material, having two faces which are parallel to each other. The disc is provided with a plurality of radial shutter elements, spaced by elements which transmit the light. The shutter elements are formed by V-shaped elements provided on one face of the disc and capable of totally deflecting the light incident thereon.

    摘要翻译： 一种用于检测旋转构件相对于固定结构的角位置的光学换能器，其包括透明材料的闸板，具有彼此平行的两个面。 盘设置有多个径向快门元件，由传递光的元件隔开。 快门元件由设置在盘的一个表面上的V形元件形成，并且能够使入射到其上的光完全偏转。