The advantage of optical rotary encoder！

1, Advantages: small size, precision, resolution itself can be very high, no contact without wear; the same species can detect angular displacement encoder, but also in the mechanical conversion device to help detect linear displacement encoder; multi-cycle photoelectric absolute encoder can detect considerable Long-range linear displacement (such as 25-bit multi-turn). Installation at random, the interface forms rich, the price is reasonable. Mature technology, many years ago has been widely used at home and abroad.
2, Disadvantages: precision but the use of outdoor and harsh environments put forward higher protection requirements; measuring linear displacement to be dependent on mechanical device conversion, the need to eliminate the error caused by the mechanical gap; detection track object is difficult to overcome slip.

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