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专利名称：Absolute position transducer
发明人：Nahum, Michael,Jones, Benjamin K.,Renalds,
Partick A.,Zwilling, Avron M.,Atherton, KimW.
申请号：EP03015455.3申请日：20030709公开号：EP1382940A3公开日：20060607
专利附图：
摘要：An absolute 2D position-sensing device is usable to measure the relativeposition of two elements. A 2D absolute scale includes an integrated 2D absolute scale
pattern extending over the 2D scale area along each measuring axis of the scale. Theintegrated 2D absolute scale pattern includes a plurality of periodic portions interleavedwith a plurality of non-periodic portions along each axis. Each periodic portion includes aplurality of periodically-placed scale elements. Each non-periodic portion includes aplurality of code elements indicative of an absolute measurement value. The codeelements may have a length that is narrower along each measuring axis is than the lengthof the periodic scale elements along each measuring axis. The offset of the periodically-placed elements relative to a readhead of the device is combined with the absolutemeasurement value to determine an absolute position.
申请人：MITUTOYO CORPORATION
地址：20-1, Sakado 1-chome, Takatsu-ku Kawasaki-shi, Kanagawa-ken 213-0012 JP
国籍：JP
代理机构：Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
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