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    • 10. 发明公开
    • Encoder, motor with encoder, and servo system
    • 编码器,带编码器的电机和伺服系统
    • EP2869033A1
    • 2015-05-06
    • EP14190809.5
    • 2014-10-29
    • Kabushiki Kaisha Yaskawa Denki
    • Yoshida, YasushiMatsutani, YasuhiroYoshidomi, ShiroTakada, HiroshiArinaga, YujiMurokita, IkumaHarada, MasanobuKondo, Hiroki
    • G01D5/347
    • G01D5/3473G01D5/2458G01D5/34792G05B1/04
    • An optical module (120) includes: a light source (121) configured to emit diffusion light to tracks (SA1, SA2, SI1, SI2); one light receiving array (PA2) and another light receiving array (PA1) which are arranged across the light source (121) in a width direction (R) substantially vertical to the measurement direction (C); a light receiving array (PI2) arranged between the one light receiving array (PA2) and the light source (121), and configured to receive light which is reflected at the tracks (SI2) having a first incremental pattern; and a light receiving array (PI1) arranged between the another first light receiving array (PA1) and the light source (121), and configured to receive light which is reflected at the tracks (SI1) having a second incremental pattern which pitch is longer than a pitch of the first incremental pattern.
    • 光学模块(120)包括:光源(121),配置为将漫射光发射到轨道(SA1,SA2,SI1,SI2);光源 一个光接收阵列(PA2)和另一个光接收阵列(PA1),它们在基本上垂直于测量方向(C)的宽度方向(R)上横跨光源(121)布置; 设置在所述一个光接收阵列(PA2)和所述光源(121)之间并且被配置为接收在具有第一增量图案的所述轨道(SI2)处反射的光的光接收阵列(PI2) 和布置在另一个第一光接收阵列(PA1)和光源(121)之间并且被配置为接收在具有第二增量图案的迹线(SI1)处反射的光的光接收阵列(PI1) 比第一增量模式的音调更高。