Encoder

阅读:610发布:2021-11-24

专利汇可以提供Encoder专利检索,专利查询,专利分析的服务。并且PURPOSE:To enable the measurement of the absolute length easily even with an encoder of an incremental type by providing fix point marks, each one set of which consists of an origin mark and a code mark for coding said mark in the plural positions on a main scale. CONSTITUTION:A scale band 1a, a track 1b for an origin provided with origin marks R1, R2 consisting of a random pattern, and a code track 1c provided with code marks C1, C2 for coding the marks R1, R2 respectively are provided on a main scale 1 made of a glass plate. A read plate 2 as an index scale movable in the longitudinal direction relatively with the scale 1 is provided. Reference scales 2a, 2b are formed in the position where the scales face the band 1a, and the scales 2a, 2b are made of the bright and dark slits of the same pitch as the pitch of the bright and dark slits of the band 1a and are so disposed that the period of the bright and dark slits deviate by 1/4 pitch in the length measuring direction of the scale 1.,下面是Encoder专利的具体信息内容。

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