Angular Encoder

he Visidyne Angular Encoder is a non-contact shaft-encoding scheme using passive optics, an LED, and a detector. The encoder uses an LED to illuminate a rotating shaft and uses the reflected light, from the shaft-end, to measure angular position (rotation angle).  The reflected light impinges on a proprietary Tri-Phase detector that outputs a signal proportional to the angular position, absolute over 360 degrees.  The innovation of this technology is in the Tri-Phase measurement. The Tri-Phase measurement allows for wide variation between encoder and shaft distance and variations in temperature. The Visidyne Encoder is a non-contact measurement device that obviates the need to attach the encoder to the shaft. It is high-resolution, low power with the following advantages: not susceptible to EMI, RFI, or vibration, non-contact measurement (no loading effects, no bearings), wide tolerances between encoder and shaft-end (5mm – 50mm), no maximum mechanical speed.

Applications: Precision position control of automotive, industrial, defense, space, medical, and toy rotational systems.