Velocity information detecting apparatus

专利名称：Velocity information detecting apparatus发明人：Ishizuka, Koh, c/o Canon Kabushiki

Kaisha,Ishii, Satoshi, c/o Canon KabushikiKaisha,Kaneda, Yasushi, c/o Canon KabushikiKaisha

申请号：EP94103207.0申请日：19940303公开号：EP0614086A1公开日：19940907

专利附图：

摘要：A velocity information detecting apparatus detects velocity information of a

moving object. The apparatus is provided with a light source for emitting a coherentbeam, a beam splitting member for splitting the beam from the light source into aplurality of beams to irradiate the object thereby, and a photodetector for receivingscattered light from the object. The velocity information of the object is detected, basedon a Doppler shift of the scattered light detected by the photodetector. The plurality ofbeams irradiate the object disposed in a region before the plurality of beams arespatially separated from each other. The beam splitting member may be either adiffraction grating or a prism member. The diffraction grating may be a lamellar phasegrating or a blazed diffraction grating. The prism member may be a roof prism.

申请人：CANON KABUSHIKI KAISHA

地址：30-2, 3-chome, Shimomaruko, Ohta-ku Tokyo JP

国籍：JP

代理机构：Tiedtke, Harro, Dipl.-Ing.

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