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attributes.Pulses_Per_Revolution

attributes.Encoder_Reading

attributes.Counts_per_Revolution

attributes.Encoder_Signal

attributes.Supply_Voltage

attributes.Shaft_Diameter

attributes.Automotive_Standard

attributes.Mounting_Hole_Diameter

attributes.Shaft_Length

attributes.Mounting_Type

attributes.Shaft_Style

attributes.Termination_Style

attributes.Maximum_Operating_Speed

Grayhill Optical Encoder with a 3.18 mm Flat Shaft, Panel Mount

Grayhill 5V dc Optical Encoder with a 6.35 mm Flat Shaft, Panel Mount, Pin

Grayhill 5V dc Optical Encoder with a 6.32 mm Flat Shaft, Panel Mount, Center Ribbon Cable with Connector

Grayhill Mechanical Rotary Encoder with a 6.35 mm Flat Shaft, Panel Mount

Grayhill 5V dc Optical Encoder with a 6.35 mm Flat Shaft, Panel Mount, PC Pin

Grayhill 5V dc Optical Encoder with a 6.35 mm Flat Shaft, Surface Mount, Connector

Grayhill 5V dc Optical Encoder with a 6.35 mm Flat Shaft, Panel Mount, Cable


An optical rotary encoder is an angular position sensor. It converts an angular displacement directly into a digital form. There are usually three components in an optical rotary encoder: a light source (an [LED](/web/c/displays-optoelectronics/leds-led-accessories/)), a sensor and a moveable disk.

**How an optical rotary encoder works**

Optical rotary encoders have a shaft mechanically coupled to an input driver. This driver rotates a disc fixed onto it which is marked with a succession of opaque and clear segments.

Light from infrared emitting diodes reaches the infrared receivers through the transparent slits of the rotating disc, creating an analogue signal. The signal is then amplified electronically and converted into digital form. This is then transmitted to the data processor.

**Uses for optical rotary encoders**

Optical rotary encoders make precise digital signals. This makes them a good option where image resolution matters, and explains their use in applications as varied as office equipment (in computer mice and photo copiers) and medical devices.



Optical Rotary Encoders

Rotary Encoders

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Grayhill Optical Rotary Encoders

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