专利名称：Displacement measuring apparatus发明人：Arimitsu, Yasumichi,Miyaoka, Yasuyuki申请号：EP11158395.1申请日：20110316公开号：EP2431749A2公开日：20120321
专利附图：
摘要：A displacement measuring apparatus including: a first light detector including afirst emitter illuminating optically identifiable marks disposed on a moving body, and afirst light receiver detecting light through the marks; a second light detector including asecond emitter illuminating the marks and a second light receiver detecting light through
the marks, wherein the second light detector is arranged at a predetermined intervalfrom the first light detector in a moving direction of the moving body; an identical pointdetecting unit detecting a first timing at which the first and second light detectordetecting an identical mark among the marks, and a second timing; a velocity calculatingunit calculating a velocity of the moving body by using the first and second timingdetermined by the identical point detecting unit; and a time-sharing light emitting unitallowing the first and second emitter to emit the light in a time-sharing manner.
申请人：CANON KABUSHIKI KAISHA
地址：30-2, Shimomaruko 3-chome Ohta-ku Tokyo 146-8501 JP
国籍：JP
代理机构：TBK
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