OPTICAL ENCODER CAPABLE OF IDENTIFYING ABSOLUTE POSITIONS AND OPERATING METHOD THEREOF

摘要

The present disclosure is related to an optical encoder which is configured to provide precise coding reference data by feature recognition technology. To apply the present disclosure, it is not necessary to provide particular dense patterns on a working surface. The precise coding reference data can be generated by detecting surface features of the working surface.

主权项

1. An optical encoder comprising:
a light emitting unit configured to emit light to a detection surface; a light sensing unit configured to detect reflected light from the detection surface using a shutter parameter to generate detected signals; and a processing unit configured to
store, in a registration mode, at least one predetermined shutter parameter range corresponding to at least one reference position on the detection surface according to the shutter parameter, anddetermine, in a comparison mode, a current position by comparing a current shutter parameter with the predetermined shutter parameter range.