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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Description Prix 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 Current Rating
N° de stock RS 263-2873
Référence fabricantENA1J-B28-L00064L
MarqueBourns
45,98 €
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Unité
64 - Digital Square Wave 5V dc 6.35 mm - 22.23mm Bracket Mount Round - 3000rpm -
N° de stock RS 134-8197
Référence fabricantES14A0D-E28-L032N
MarqueBourns
57,77 €
Each
Unité
32 Quadrature 2-Bit Quadrature 5V dc 3.18 mm 1.73 mm, 14 mm 22.23mm Bracket Mount Slotted Axial PC Pin 1000rpm 26mA
N° de stock RS 878-0423
Référence fabricant62AG11-L5-060C
MarqueGrayhill
18,70 €
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- Quadrature 2-Bit Gray Code 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Ribbon Cable with Connector 100rpm 30mA
N° de stock RS 167-5492
Référence fabricantENT1J-D28-L00100L
MarqueBourns
42,978 €
Each (In a Tray of 42)
Unité
100 Incremental Digital Square Wave 5V dc 7.14 mm 0.99mm 22.23mm Bracket Mount Plain Axial PC Pin 3000rpm -
N° de stock RS 134-8198
Référence fabricantES14A0D-E28-L064N
MarqueBourns
56,92 €
Each
Unité
64 Quadrature 2-Bit Quadrature 5V dc 3.18 mm 1.73 mm, 14 mm 22.23mm Bracket Mount Slotted Axial PC Pin 1000rpm 26mA
N° de stock RS 878-0593
Référence fabricant62A11-02-040CH
MarqueGrayhill
60,11 €
Each
Unité
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Connector 100rpm 30mA
N° de stock RS 878-0426
Référence fabricant62AG11-L0-060C
MarqueGrayhill
18,43 €
Each
Unité
- Quadrature 2-Bit Gray Code 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Ribbon Cable with Connector 100rpm 30mA
N° de stock RS 182-5697
Référence fabricantREC16K25-201
20,53 €
Each
Unité
25 - Digital Square Wave 5V dc 6 mm M9 16.5mm Through Hole Flat Wire Lead - 30mA
N° de stock RS 182-5668
Référence fabricantJT30-340-C00
108,22 €
Each
Unité
- Absolute - 12V dc 6 mm - 15mm - Flat Wire Lead - 40mA
N° de stock RS 182-5629
Référence fabricantRECW20D-50-201-1
17,57 €
Each
Unité
50 - Digital Square Wave 5V dc 6 mm M9 12mm - Round Wire Lead - 50mA
N° de stock RS 182-5684
Référence fabricantCJ25-82010
49,55 €
Each (In a Tray of 20)
Unité
5 Incremental Digital Square Wave 5V dc 6.35 mm M17 9.35mm - Round Wire Lead - 20mA
N° de stock RS 182-5634
Référence fabricantREC16B50-201
13,04 €
Each
Unité
50 - Digital Square Wave 5V dc 6 mm M9 16.5mm Through Hole Flat Wire Lead - 30mA
N° de stock RS 878-0577
Référence fabricant62A11-02-P
MarqueGrayhill
27,00 €
Each
Unité
- Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 17.42mm - Flat Pin 100rpm 30mA
N° de stock RS 878-0543
Référence fabricant62A11-02-180S
MarqueGrayhill
63,16 €
Each
Unité
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Stripped Cable 100rpm 30mA
N° de stock RS 182-5639
Référence fabricantREC16A25-201-C
16,78 €
Each
Unité
25 - Digital Square Wave 5V dc 6 mm M9 16.5mm Through Hole Flat Wire Lead - 30mA
N° de stock RS 878-0574
Référence fabricant62A11-02-250S
MarqueGrayhill
63,02 €
Each
Unité
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Stripped Cable 100rpm 30mA
N° de stock RS 182-5638
Référence fabricantREC16A50-201
15,00 €
Each
Unité
50 - Digital Square Wave 5V dc 6 mm M9 16.5mm Through Hole Flat Wire Lead - 30mA
N° de stock RS 878-0631
Référence fabricant60AR18-4-060C
MarqueGrayhill
112,44 €
Each
Unité
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm 17.25mm 21.67mm Surface Mount Flat Connector 100rpm 5 (Joystick) mA, 20 mA @ 5 V dc (Rotary)
N° de stock RS 878-0587
Référence fabricant62R30-01-P
MarqueGrayhill
94,37 €
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- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.45mm Panel Mount Flat Pin 100rpm 30 mA @ 5 V dc
N° de stock RS 878-0458
Référence fabricant62S22-M0-020C
MarqueGrayhill
55,76 €
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- Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Ribbon Cable with Connector - 25 mA @ 5.25 V dc