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 202-4397
Référence fabricantREC16L25-205-B
22,65 €
Each
Unité
25 Incremental Digital Square Wave 5V dc 16 mm - - Through Hole Flat - - -
N° de stock RS 202-0442
Référence fabricantRE30E-1000-213-1
55,53 €
Each
Unité
1000 Incremental Digital Square Wave 5 - 12V dc 4 mm - - Panel Mount Plain Cable - -
N° de stock RS 182-5672
Référence fabricantJT30-120-500
89,97 €
Each
Unité
- Absolute - 5V dc 6 mm - 15mm - Flat Wire Lead - 40mA
N° de stock RS 182-5633
Référence fabricantREC16B50-201-C
14,08 €
Each
Unité
50 - Digital Square Wave 5V dc 6 mm M9 16.5mm Through Hole Flat Wire Lead - 30mA
N° de stock RS 202-4409
Référence fabricantRES20D-50-201-1
70,93 €
1 Box of 5
Boîte(s)
50 Incremental Digital Square Wave 5V dc 20 mm - - Panel Mount Slotted - - -
N° de stock RS 202-4398
Référence fabricantREC16D25-205-B
62,19 €
1 Box of 5
Boîte(s)
25 Incremental Digital Square Wave 5V dc 16 mm - - Panel Mount Flat Connector - -
N° de stock RS 202-0447
Référence fabricantRE30E-400-213-1
39,98 €
Each
Unité
400 Incremental Digital Square Wave 5 - 12V dc 4 mm - - Panel Mount Plain Cable - -
N° de stock RS 202-4408
Référence fabricantRES20-50-200
23,65 €
Each
Unité
50 Incremental - 5V dc 20 mm - - Through Hole Slotted Pin - -
N° de stock RS 182-5630
Référence fabricantRECW20D-25-201-1
17,57 €
Each
Unité
25 - Digital Square Wave 5V dc 6 mm M9 12mm - Round Wire Lead - 50mA
N° de stock RS 182-5637
Référence fabricantREC16A50-201-C
15,38 €
Each
Unité
50 - Digital Square Wave 5V dc 6 mm M9 16.5mm Through Hole Flat Wire Lead - 30mA
N° de stock RS 202-0443
Référence fabricantRE30E-1024-213-1
55,53 €
Each
Unité
1024 Incremental Digital Square Wave 5 - 12V dc 4 mm - - Panel Mount Plain Cable - -
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 202-4404
Référence fabricantREC20C-50-201-1
41,10 €
Each
Unité
50 Incremental Digital Square Wave 5V dc 20 mm - - Panel Mount Slotted - - -
N° de stock RS 202-4406
Référence fabricantREC20D-50-201-1
20,15 €
Each
Unité
50 Incremental Digital Square Wave 5V dc 20 mm - - Panel Mount Flat - - -
N° de stock RS 182-5688
Référence fabricantREC16M25-201
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 182-5697
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 182-5676
Référence fabricantJT22-120-500
58,66 €
Each
Unité
- Absolute - 5V dc 3 mm M9 8mm - Flat Wire Lead - 40mA
N° de stock RS 202-4400
Référence fabricantREC20-25-201-1
114,50 €
1 Box of 5
Boîte(s)
25 Incremental Digital Square Wave 5V dc 20 mm - - Panel Mount Slotted - - -
N° de stock RS 202-4396
Référence fabricantREC16L25-205-B
87,62 €
1 Box of 5
Boîte(s)
25 Incremental Digital Square Wave 5V dc 16 mm - - Through Hole Flat - - -
N° de stock RS 202-0446
Référence fabricantRE30E-360-213-1
39,98 €
Each
Unité
360 Incremental Digital Square Wave 5 - 12V dc 4 mm - - Panel Mount Plain Cable - -