Elements of the Optical Encoder - Changchun Rongde Optics Co.,Ltd.

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Elements of the Optical Encoder！

Changchun Rongde Optics Co.,Ltd. Release time：2016/8/20 Browse：597

The optical encoder uses an opaque disk (code disk) that has one or more circular tracks, with some arrangement of identical transparent windows (slits) in each track

A parallel beam of light(e.g,.from a set of light emitting diodes)is projected to all tracks from one side of the disk.

The transmitted light is picked off using a bank of photosensors on the other side of the disk that typically has one sensor for each track.

– The light sensor could be a silicon photodiode, a phototransistor, or a photovoltaic cell.

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