专利名称：Encoder that optically detects positional
information of a moving body from differentoptical paths lengths
发明人：Susumu Makinouchi,Akihiro Watanabe申请号：US13090659申请日：20110420公开号：US08710425B2公开日：20140429
专利附图：
摘要：An encoder emits modulated light from a light source section and lets a firstlight and a second light separated from the modulated light interfere with each other in
a moving grating. In the encoder, the light emitted from the light source section iselectrically modulated, and the first light and the second light have different light pathlengths.
申请人：Susumu Makinouchi,Akihiro Watanabe
地址：Zama JP,Sendai JP
国籍：JP,JP
代理机构：Oliff PLC
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