Optical Encoders

Q: What is an optical encoder used for?

Optical encoders are just one of several feedback techonlogies used to track position and/or speed data. They are commonly used for applications where high accuracy and resolution are important criteria.

Optical encoders provide high resolution, high operating speeds and reliability Dynapar offers both mask type and phased array sensing technology. Optical encoders with Dynapar's phased array technology can operate in high shock and vibration environments and are typically rated at 400 G shock and 20 G vibration. Optical encoders work by shining a light source through a patterned disc that is read by a photo-detector. Optical encoders engines can be implemented as incremental or absolute encoders and are available in various mounting styles.

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Featured Optical Encoders

HS35R Hollow-shaft Encoder

Heavy duty incremental hollow-shaft encoder rated at 400G shock, 20G vibration. Wide temperature range and IP67 option. 1-5,000 PPR.

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H25 Size 25 incremental Encoders

Industry standard size 25 incremental encoders offer reliable feedback with options up to 10,000 PPR, sealing, extended temp range and more.

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F10

Ultra small size 10 hollow-shaft incremental encoder with up to 120°C temperature range. Max 2,048 PPR with commutation tracks available.

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AI25 Size 25 Absolute Encoders

Standard size 25 absolute encoders come with shaft or hub-shaft mounting, multiple protocols including SSI, BiSS, DeviceNet and more.

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AD35

Single-turn hub-shaft 38mm size absolute encoder for servo motors. SSI, BiSS and SSI Gray protocols. Up to 22 bit single-turn resolution.

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AD25

Super compact single and multi-turn absolute encoder with conical shaft for concentric motor mounting. Up to 22 bit ST and 12 bit MT.

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Frequently Asked Questions about Optical Rotary Encoders

What is an optical encoder and how does it work?

Optical encoders generate signals or pulses in response to a patterned disc rotating to reflect or transmiss light from an emitter to a sensor. An integrated circuit then processes the sensor data into digital feedback.

Learn more how an optical encoder works here

What is an optical encoder used for?

Optical encoders are just one of several feedback technologies used to track position and/or speed data. They are commonly used for applications where high accuracy and resolution are important criteria.

What is the output of optical encoders?

Optical encoders provide different output types based on whether they are incremental or absolute. Incremental type optical encoders output a continuous square wave with the crests corresponding to pulses. The output of the absolute optical encoders is a unique digital word or bit and is output in the set communication protocol such as BiSS or EtherNet/IP.

Optical Encoders