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    • 8. 发明公开
    • REFLECTIVE ENCODER, SCALE THEREOF, AND METHOD FOR MANUFACTURING SCALE
    • REFLEKTIERENDER KODIERER,SKALADAFÜR,VERFAHREN ZUR SKALA-HERSTELLUNG
    • EP2051047A4
    • 2017-04-19
    • EP07744609
    • 2007-06-01
    • MITUTOYO CORP
    • YAKU TORUTOMINAGA ATSUSHI
    • G01D5/30G01D5/347
    • G01D5/34746G01D5/347G01D5/34707G01D5/34792
    • A reflection type encoder, which receives a plurality of light-receiving signals from a single scale, includes a light source, a scale having a plurality of patterns formed thereon to which light is irradiated from the light source, and a light-receiving element for receiving light reflected from each of the plurality of patterns, wherein a plurality of patterns each having different thicknesses are formed on a single track of the scale by using a dielectric substance, light of a plurality of wavelengths each having different brightnesses in accordance with differences in the thickness of the dielectric substance is irradiated from the light source, and a light-receiving signal is obtained for the respective thicknesses of the dielectric substance. Therefore, the scale can be downsized by overlapping a plurality of patterns on the same track.
    • 从单一尺度接收多个光接收信号的反射型编码器包括:光源,其上形成有从光源照射光的多个图案的刻度;以及光接收元件, 接收从所述多个图案中的每一个反射的光,其中通过使用电介质物质在所述刻度的单个轨道上形成各自具有不同厚度的多个图案,所述多个波长的光根据不同的亮度而具有不同的亮度 从光源照射电介质的厚度,得到电介质的各厚度的光接收信号。 因此,可以通过在同一轨道上重叠多个图案来缩小尺寸。