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    • 3. 发明授权
    • Optical rotary encoder
    • 光学旋转编码器
    • US06255644B1
    • 2001-07-03
    • US09242726
    • 1999-04-13
    • Mitsuyuki TaniguchiMasato Aochi
    • Mitsuyuki TaniguchiMasato Aochi
    • G01D5347
    • G01D5/34738G01D5/347
    • An optical rotary encoder simple in construction and capable of easily securing an aligned state of a code plate with a rotating shaft A disk DS and an attachment portion DM of a code plate (6) are formed of an integrated plastic molded product, so that the assembly work for the code plate (6) itself is unnecessary. A lens group is formed in a predetermined region of the disk DS. When a fitting portion RE of a shaft member (20) is press fitted into an insertion hole DE, alignment holding portions (J1 to J3) are deformed plastically to thereby achieve the alignment. The attachment portion DM and the shaft member (20) are fixed to each other by engaging a fixing bolt BL with threaded holes DH and RH. A plurality of alignment holding portions (K1 to K3) may be provided at the outer peripheral surface of the attachment portion DM. In this case, the alignment is achieved by press fitting the attachment portion DM into a fitted portion RF and plastically deforming the alignment holding portions (K1 to K3). The alignment holding portions may be provided so as to be deformed elastically in the radial direction. Also, a tapered fitting structure may be adopted.
    • 一种光学旋转编码器,其结构简单,并且能够容易地确保带有旋转轴A的代码板的对准状态。盘DS(DS)和代码板(6)的附接部分DM由一体的塑料模制产品形成, 代码板(6)本身的组装工作是不必要的。 透镜组形成在盘DS的预定区域中。 当将轴构件(20)的嵌合部分RE压配合到插入孔DE中时,对准保持部(J1〜J3)塑性变形,从而实现对准。 通过将固定螺栓BL与螺纹孔DH和RH接合,附接部分DM和轴构件(20)彼此固定。 可以在安装部DM的外周面设置多个取向保持部(K1〜K3)。 在这种情况下,通过将安装部分DM压入配合部分RF并使对准保持部分(K1至K3)塑性变形来实现对准。 对准保持部可以设置成沿径向弹性变形。 另外,也可以采用锥形配合结构。
    • 4. 发明授权
    • Optical encoder
    • 光学编码器
    • US06222183B1
    • 2001-04-24
    • US09225516
    • 1999-01-06
    • Mitsuyuki TaniguchiMasato Aochi
    • Mitsuyuki TaniguchiMasato Aochi
    • G01D534
    • G01D5/347G01D5/36
    • A mobile code plate manufactured, such as by plastic injection molding, encodes input light by the light path alteration function of a first optical bending portion. This is converted into a first output optical flux by perpendicular incidence and optical transmission at the position of input of a first input optical flux and is then input to a first photodetector element. Since the first optical bending portion arrives at the input position of a second input optical flux, a bent second output optical flux is generated and is likewise input to the first photodetector element. As the mobile code plate rotates, a second optical bending portion arrives at the input position of the first input optical flux. When the first optical bending portion leaves the input position of the second input optical flux, third and fourth output optical fluxes are input to a second photodetector element with the result that an inverted signal is obtained.
    • 通过塑料注射成型制造的移动代码板通过第一光学弯曲部分的光路改变功能对输入光进行编码。 这通过在第一输入光通量的输入位置处的垂直入射和光透射转换成第一输出光通量,然后被输入到第一光电检测元件。 由于第一光学弯曲部分到达第二输入光通量的输入位置,所以产生弯曲的第二输出光通量并且同样地被输入到第一光电检测元件。 当移动代码板旋转时,第二光学弯曲部分到达第一输入光通量的输入位置。 当第一光学弯曲部分离开第二输入光束的输入位置时,第三和第四输出光束被输入到第二光电检测器元件,结果得到反相信号。
    • 5. 发明授权
    • Motion detection of an optical encoder by converging emitted light beams
    • 通过会聚发射光束对光学编码器进行运动检测
    • US06703601B2
    • 2004-03-09
    • US09171564
    • 1998-10-21
    • Mitsuyuki TaniguchiMasato Aochi
    • Mitsuyuki TaniguchiMasato Aochi
    • G01D534
    • G01D5/347G01D5/26
    • An optical encoder with a high utilization efficiency of light and easy to manufacture. The optical encoder comprises a conversion device formed in such a manner that lens elements are arranged periodically with a reference pitch IP for converting a beam L emitted from a light source into a plurality of shifting beams MF. The beam L is contracted to a half of the reference pitch IP by the conversion device and goes out as a parallel beam, to impinge on a light receiving section. On a board of the light receiving section there are arranged light receiving elements with a pitch of IP/2. When an object connected to the conversion device is rotated or translated, the position of each lens element changes synchronously and the shifting beam MF scans an arrangement of the light receiving elements. As a result, a ratio of a light amount reaching the light receiving element changes periodically. The resultant electrical signal is processed by a well-known processing circuit.
    • 光学编码器,光源利用效率高,易于制造。 光学编码器包括转换装置,其形成为透镜元件周期性地布置有参考音调IP,用于将从光源发射的光束L转换成多个移动光束MF。 光束L通过转换装置收缩到参考节距IP的一半,并作为平行光束射出,以撞击在光接收部分上。 在光接收部分的板上布置有IP / 2间距的光接收元件。 当连接到转换装置的物体旋转或平移时,每个透镜元件的位置同步地改变,并且移动光束MF扫描光接收元件的布置。 结果,到达光接收元件的光量的比率周期性地变化。 所得到的电信号由公知的处理电路处理。