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. 


...
Read more Read less

Filters

Viewing 1 - 20 of 95 products
Results per page
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 Stock No. 878-0521
Mfr. Part No.25LB22-H
BrandGrayhill
TWD219
Each
units
- 2 bit Quadrature Hex Code - 6.35 mm - 19.05mm Panel Mount Flat - - 1.5 mA @ 115 V ac, 150 mA @ 14 V dc, 250 mA @ 28 V dc
New
RS Stock No. 178-3142
Mfr. Part No.HEDS-5140#A11
BrandBroadcom
TWD1,283
Each (In a Tray of 50)
units
- - - - - - - - - - - -
RS Stock No. 796-7834
Mfr. Part No.HEDS-5140#A11
BrandBroadcom
TWD590
Each
units
500 Incremental - - 4 mm - - Through Hole - - 30000rpm -
New
RS Stock No. 178-3141
Mfr. Part No.HEDS-5120#A11
BrandBroadcom
TWD1,280
Each (In a Tray of 50)
units
- - - - - - - - - - - -
RS Stock No. 796-7830
Mfr. Part No.HEDS-5120#A11
BrandBroadcom
TWD537
Each
units
500 Incremental - - 4 mm - - Through Hole - - 30000rpm -
New
RS Stock No. 178-3264
Mfr. Part No.HEDS-6140#B09
BrandBroadcom
TWD2,726
Each (In a Box of 100)
units
- - - - - - - - - - - -
RS Stock No. 796-7868
Mfr. Part No.HEDS-6140#B09
BrandBroadcom
TWD1,265
Each
units
1000 Incremental - - 0.5 in - - Through Hole - - 30000rpm -
RS Stock No. 878-0530
Mfr. Part No.25LB22-G
BrandGrayhill
TWD200
Each
units
- 2 bit Quadrature Gray Code - 6.35 mm - 19.05mm Panel Mount Flat - - 1.5 mA @ 115 V ac, 150 mA @ 14 V dc, 250 mA @ 28 V dc
RS Stock No. 878-0669
Mfr. Part No.60AD18-8-M-060C
BrandGrayhill
TWD3,118
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 14.78mm Panel Mount Flat Connector 100rpm 5 (Joystick) mA, 20 mA @ 5 V dc (Rotary)
RS Stock No. 878-0565
Mfr. Part No.61RS128-080
BrandGrayhill
TWD3,016
Each
units
128 Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 18.4mm Surface Mount Flat Pin 300rpm 30 mA @ 5 V dc
RS Stock No. 789-9510
Mfr. Part No.ENT1J-D28-L00100L
BrandBourns
TWD2,039
Each
units
100 Incremental Digital Square Wave 5V dc 7.14 mm 0.99mm 22.23mm Bracket Mount Plain Axial PC Pin 3000rpm -
RS Stock No. 878-0650
Mfr. Part No.60AD18-4-M-060C
BrandGrayhill
TWD3,118
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 14.78mm Panel Mount Flat Connector 100rpm 5 (Joystick) mA, 20 mA @ 5 V dc (Rotary)
RS Stock No. 134-8141
Mfr. Part No.ES14A0D-E28-L032N
BrandBourns
TWD1,687
Each (In a Tube of 25)
units
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 Stock No. 162-2596
Mfr. Part No.EM14A1D-C24-L032N
BrandBourns
TWD638
Each (In a Tube of 25)
units
32 Incremental 2 Channel Quadrature 5V dc 3.17 mm 1.73mm 19.05mm Through Hole Flat Axial PC Pin 120rpm -
RS Stock No. 878-0599
Mfr. Part No.62V11-01-060C
BrandGrayhill
TWD1,588
Each
units
- Quadrature 2-Bit Quadrature 3.3V dc 6.35 mm - 17.44mm Surface Mount Flat Connector 100rpm 50mA
RS Stock No. 878-0587
Mfr. Part No.62R30-01-P
BrandGrayhill
TWD3,331
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.45mm Panel Mount Flat Pin 100rpm 30 mA @ 5 V dc
RS Stock No. 878-0426
Mfr. Part No.62AG11-L0-060C
BrandGrayhill
TWD939
Each
units
- Quadrature 2-Bit Gray Code 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Ribbon Cable with Connector 100rpm 30mA
RS Stock No. 878-0653
Mfr. Part No.60A18-4-060C
BrandGrayhill
TWD2,385
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 14.73mm Panel Mount Flat Connector - 5 (Joystick) mA, 20 mA @ 5 V dc (Rotary)
RS Stock No. 789-9501
Mfr. Part No.ENT1D-D28-L00100L
BrandBourns
TWD2,128
Each
units
100 Incremental Digital Square Wave 5V dc 7.14 mm 0.99mm 22.23mm Bracket Mount Plain Axial PC Pin 3000rpm -
RS Stock No. 134-8142
Mfr. Part No.ES14A0D-E28-L064N
BrandBourns
TWD1,776
Each (In a Tube of 25)
units
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