| 摘要 |
<p>An encoder signal generating device in which a light receiving element (1) is constituted by a one-chip planar type phototransistor array that has a plurality of light receiving portions (21). Thus, this encoder signal generating device needs no amplification circuit. Even when using this encoder signal generating device as a device of the multi-channel type, the size of the light receiving element (1) is reduced, in comparison with that of a conventional light receiving element. Moreover, a highly sensitive encoder signal generating device, which has good S/N characteristics, is obtained. <IMAGE></p> |
