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 878-0521
製造零件編號25LB22-H
BrandGrayhill
TWD336.00
單位
- 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
RS庫存編號 796-7834
製造零件編號HEDS-5140#A11
BrandBroadcom
TWD894.00
單位
500 Incremental - - 4 mm - - Through Hole - - 30000rpm -
RS庫存編號 178-3142
製造零件編號HEDS-5140#A11
BrandBroadcom
TWD635.40
Each (In a Tray of 50)
單位
500 Incremental - - 4 mm - - Through Hole - - 30000rpm -
RS庫存編號 178-3141
製造零件編號HEDS-5120#A11
BrandBroadcom
TWD633.80
Each (In a Tray of 50)
單位
500 Incremental - - 4 mm - - Through Hole - - 30000rpm -
RS庫存編號 796-7830
製造零件編號HEDS-5120#A11
BrandBroadcom
TWD892.00
單位
500 Incremental - - 4 mm - - Through Hole - - 30000rpm -
RS庫存編號 178-3264
製造零件編號HEDS-6140#B09
BrandBroadcom
TWD964.00
個 (以毎盒:100)
單位
1000 Incremental - - 0.5 in - - Through Hole - - 30000rpm -
RS庫存編號 878-0530
製造零件編號25LB22-G
BrandGrayhill
TWD325.00
單位
- Absolute 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庫存編號 202-4406
製造零件編號REC20D-50-201-1
TWD794.00
單位
50 Incremental Digital Square Wave 5V dc 20 mm - - Panel Mount Flat - - -
RS庫存編號 202-4407
製造零件編號RES20-50-200
TWD4,650.00
毎盒:5 個
Box(es)
50 Incremental - 5V dc 20 mm - - Through Hole Slotted Pin - -
RS庫存編號 202-4408
製造零件編號RES20-50-200
TWD1,049.00
單位
50 Incremental - 5V dc 20 mm - - Through Hole Slotted Pin - -
RS庫存編號 167-3612
製造零件編號ENS1J-B28-L00256L
BrandBourns
TWD1,949.50
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 878-0448
製造零件編號62AG22-L0-P
BrandGrayhill
TWD731.00
單位
- Quadrature 2-Bit Gray Code 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Pin 100rpm 30mA
RS庫存編號 202-4409
製造零件編號RES20D-50-201-1
TWD3,430.00
毎盒:5 個
Box(es)
50 Incremental Digital Square Wave 5V dc 20 mm - - Panel Mount Slotted - - -
RS庫存編號 878-0653
製造零件編號60A18-4-060C
BrandGrayhill
TWD2,902.00
單位
- 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庫存編號 878-0571
製造零件編號62A22-02-020C
BrandGrayhill
TWD1,855.00
單位
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Connector 100rpm 30mA
RS庫存編號 878-0432
製造零件編號62AG11-L5-P
BrandGrayhill
TWD660.00
單位
- Quadrature 2-Bit Gray Code 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Pin 100rpm 30mA
RS庫存編號 202-0446
製造零件編號RE30E-360-213-1
TWD2,220.00
單位
360 Incremental Digital Square Wave 5 - 12V dc 4 mm - - Panel Mount Plain Cable - -
RS庫存編號 167-5308
製造零件編號EM14R1D-R20-L032N
BrandBourns
TWD896.00
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 878-0565
製造零件編號61RS128-080
BrandGrayhill
TWD3,447.00
單位
128 Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 18.4mm Surface Mount Flat Pin 300rpm 30 mA @ 5 V dc
RS庫存編號 878-0622
製造零件編號61KS64-020
BrandGrayhill
TWD3,507.00
單位
64 Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 18.4mm Surface Mount Flat Pin 300rpm 30 mA @ 5 V dc