Optical Rotary Encoders

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), 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.


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Beskrivning Pris Pulses Per Revolution Encoder Reading Encoder Signal Supply Voltage Shaft Diameter Mounting Hole Diameter Shaft Length Mounting Type Shaft Style Termination Style Maximum Operating Speed
RS-artikelnummer 796-7830
Tillv. art.nrHEDS-5120#A11
VarumärkeBroadcom
252,20 kr
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500 Incremental - - 4 mm - - Through Hole - - 30000rpm
RS-artikelnummer 178-3141
Tillv. art.nrHEDS-5120#A11
VarumärkeBroadcom
170,554 kr
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500 Incremental - - 4 mm - - Through Hole - - 30000rpm
RS-artikelnummer 263-2889
Tillv. art.nrENA1J-B28-L00128L
VarumärkeBourns
556,55 kr
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128 Incremental Digital Square Wave 5V dc 6.35 mm 9.5mm 22.23mm Bracket Mount Round - 3000rpm
RS-artikelnummer 167-3613
Tillv. art.nrENA1J-B28-L00128L
VarumärkeBourns
409,599 kr
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128 Incremental Digital Square Wave 5V dc 6.35 mm 9.5mm 22.23mm Bracket Mount Round - 3000rpm
RS-artikelnummer 178-3264
Tillv. art.nrHEDS-6140#B09
VarumärkeBroadcom
251,77 kr
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1000 Incremental - - 1/2 in - - Through Hole - - 30000rpm
RS-artikelnummer 796-7834
Tillv. art.nrHEDS-5140#A11
VarumärkeBroadcom
247,94 kr
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500 Incremental - - 4 mm - - Through Hole - - 30000rpm
RS-artikelnummer 164-2633
Tillv. art.nrENS1J-B28-L00256L
VarumärkeBourns
802,89 kr
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256 Incremental Digital Square Wave 5V dc 6.35 mm 9.5mm 22.23mm Bracket Mount Round - 3000rpm
RS-artikelnummer 167-3612
Tillv. art.nrENS1J-B28-L00256L
VarumärkeBourns
552,989 kr
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256 Incremental Digital Square Wave 5V dc 6.35 mm 9.5mm 22.23mm Bracket Mount Round - 3000rpm
RS-artikelnummer 178-3142
Tillv. art.nrHEDS-5140#A11
VarumärkeBroadcom
170,837 kr
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500 Incremental - - 4 mm - - Through Hole - - 30000rpm
RS-artikelnummer 878-0521
Tillv. art.nr25LB22-H
VarumärkeGrayhill
166,04 kr
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- 2 bit Quadrature Hex Code - 6.35 mm - 19.05mm Panel Mount Flat - -
RS-artikelnummer 878-0622
Tillv. art.nr61KS64-020
VarumärkeGrayhill
1 072,16 kr
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64 Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 18.4mm Surface Mount Flat Pin 300rpm
RS-artikelnummer 878-0451
Tillv. art.nr61C11-01-08-01
VarumärkeGrayhill
507,93 kr
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- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.45mm Panel Mount Flat PC Pin 16.6 rpm @ 30 mS
RS-artikelnummer 878-0549
Tillv. art.nr61R128-075
VarumärkeGrayhill
1 221,67 kr
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128 Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 18.4mm Surface Mount Flat Pin 300rpm
RS-artikelnummer 182-5688
Tillv. art.nrREC16M25-201
VarumärkeCopal Electronics
207,41 kr
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25 - Digital Square Wave 5V dc 6 mm M9 16.5mm Through Hole Flat Wire Lead -
RS-artikelnummer 878-0583
Tillv. art.nr62N30-P
VarumärkeGrayhill
1 160,46 kr
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- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 26.9mm Panel Mount Flat Pin 100rpm
RS-artikelnummer 215-5737
Tillv. art.nrAEDR-8723-102
VarumärkeBroadcom
389,13 kr
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- Incremental - - - - - Surface Mount - - -
RS-artikelnummer 789-9504
Tillv. art.nrENA1D-B28-L00128L
VarumärkeBourns
607,63 kr
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128 Incremental Digital Square Wave 5V dc 6.342 mm 0.99mm 22.23mm Bracket Mount Plain Axial PC Pin 3000rpm
RS-artikelnummer 182-5690
Tillv. art.nrCJ25-82010
VarumärkeCopal Electronics
822,83 kr
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5 Incremental Digital Square Wave 5V dc 6.35 mm M17 9.35mm - Round Wire Lead -
RS-artikelnummer 878-0505
Tillv. art.nr62C1111-01-060C
VarumärkeGrayhill
1 150,54 kr
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- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 26.98mm Panel Mount Flat Connector 100rpm
RS-artikelnummer 182-5633
Tillv. art.nrREC16B50-201-C
VarumärkeCopal Electronics
195,15 kr
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50 - Digital Square Wave 5V dc 6 mm M9 16.5mm Through Hole Flat Wire Lead -