Optical encoder for preventing crosstalk

• Main Authors: Ootake Nobuyuki, Wang Miaomiao
• Format: Patent
• Language: Chinese; English
• Published: 10.08.2016
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

In an optical encoder which includes a rotary plate formed with a plurality of slit arrays and a plurality of light receiving parts corresponding to the slit arrays, at least one of the outer edge of a light receiving part located on the outer side of the optical axis X of light emitted from a light emitting part and the inner edge of the light receiving part located on the inner side of the optical axis X is positioned at a greater distance from the optical axis than the edge of the slit array corresponding to the light receiving part. 本发明提供种光学编码器，具备形成有多个狭缝列的旋转板、以及和多个狭缝列对应地设置的多个受光部，该光学编码器中构成为，相对于来自发光部的光的光轴X位于外侧的受光部外侧缘以及相对于光轴X位于内侧的内侧缘的至少方与对应于该至少个受光部的狭缝列的边缘部相比，相对于光轴X位于远侧。