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 Price 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
RS庫存編號 167-3613
製造零件編號ENA1J-B28-L00128L
BrandBourns
HK$324.22
Each (In a Tray of 42)
單位
128 Incremental Digital Square Wave 5V dc 6.35 mm 9.5mm 22.23mm Bracket Mount Round - 3000rpm -
RS庫存編號 263-2889
製造零件編號ENA1J-B28-L00128L
BrandBourns
HK$402.44
單位
128 Incremental Digital Square Wave 5V dc 6.35 mm 9.5mm 22.23mm Bracket Mount Round - 3000rpm 26mA
RS庫存編號 167-5492
製造零件編號ENT1J-D28-L00100L
BrandBourns
HK$443.25
Each (In a Tray of 42)
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100 Incremental Digital Square Wave 5V dc 7.14 mm 0.99mm 22.23mm Bracket Mount Plain Axial PC Pin 3000rpm -
RS庫存編號 789-9497
製造零件編號EM14R1D-R20-L032N
BrandBourns
HK$189.00
單位
32 Incremental 2 Channel Quadrature 5V dc 6 mm 1.73mm 20mm Through Hole Slotted Axial PC Pin 120rpm -
RS庫存編號 167-5308
製造零件編號EM14R1D-R20-L032N
BrandBourns
HK$201.18
毎管:25 個
單位
32 Incremental 2 Channel Quadrature 5V dc 6 mm 1.73mm 20mm Through Hole Slotted Axial PC Pin 120rpm -
RS庫存編號 789-9510
製造零件編號ENT1J-D28-L00100L
BrandBourns
HK$521.22
單位
100 Incremental Digital Square Wave 5V dc 7.14 mm 0.99mm 22.23mm Bracket Mount Plain Axial PC Pin 3000rpm -
RS庫存編號 167-5490
製造零件編號ENA1D-B28-L00128L
BrandBourns
HK$368.671
Each (In a Tray of 42)
單位
128 Incremental Digital Square Wave 5V dc 6.342 mm 0.99mm 22.23mm Bracket Mount Plain Axial PC Pin 3000rpm -
RS庫存編號 164-2633
製造零件編號ENS1J-B28-L00256L
BrandBourns
HK$439.34
單位
256 Incremental Digital Square Wave 5V dc 6.35 mm 9.5mm 22.23mm Bracket Mount Round - 3000rpm -
RS庫存編號 263-2873
製造零件編號ENA1J-B28-L00064L
BrandBourns
HK$357.57
單位
64 - Digital Square Wave 5V dc 6.35 mm - 22.23mm Bracket Mount Round - 3000rpm -
RS庫存編號 167-3612
製造零件編號ENS1J-B28-L00256L
BrandBourns
HK$426.02
Each (In a Tray of 42)
單位
256 Incremental Digital Square Wave 5V dc 6.35 mm 9.5mm 22.23mm Bracket Mount Round - 3000rpm 26mA
RS庫存編號 162-2507
製造零件編號ENA1J-B28-L00064L
BrandBourns
HK$265.135
Each (In a Tray of 42)
單位
64 - Digital Square Wave 5V dc 6.35 mm - 22.23mm Bracket Mount Round - 3000rpm 26mA
RS庫存編號 789-9488
製造零件編號EM14A1D-C24-L032N
BrandBourns
HK$189.00
單位
32 Incremental 2 Channel Quadrature 5V dc 3.17 mm 1.73mm 19.05mm Through Hole Flat Axial PC Pin 120rpm -
RS庫存編號 134-8142
製造零件編號ES14A0D-E28-L064N
BrandBourns
HK$404.345
毎管:25 個
單位
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
RS庫存編號 789-9504
製造零件編號ENA1D-B28-L00128L
BrandBourns
HK$352.75
單位
128 Incremental Digital Square Wave 5V dc 6.342 mm 0.99mm 22.23mm Bracket Mount Plain Axial PC Pin 3000rpm -
RS庫存編號 167-5489
製造零件編號ENT1D-D28-L00100L
BrandBourns
HK$443.25
Each (In a Tray of 42)
單位
100 Incremental Digital Square Wave 5V dc 7.14 mm 0.99mm 22.23mm Bracket Mount Plain Axial PC Pin 3000rpm -
RS庫存編號 134-8141
製造零件編號ES14A0D-E28-L032N
BrandBourns
HK$404.345
毎管:25 個
單位
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
RS庫存編號 789-9501
製造零件編號ENT1D-D28-L00100L
BrandBourns
HK$544.06
單位
100 Incremental Digital Square Wave 5V dc 3.175 mm 0.99mm 22.23mm Bracket Mount Plain Axial PC Pin 3000rpm -
RS庫存編號 134-8198
製造零件編號ES14A0D-E28-L064N
BrandBourns
HK$540.13
單位
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
RS庫存編號 162-2596
製造零件編號EM14A1D-C24-L032N
BrandBourns
HK$145.246
毎管:25 個
單位
32 Incremental 2 Channel Quadrature 5V dc 3.17 mm 1.73mm 19.05mm Through Hole Flat Axial PC Pin 120rpm -
RS庫存編號 134-8197
製造零件編號ES14A0D-E28-L032N
BrandBourns
HK$540.13
單位
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