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 178-3142
製造零件編號HEDS-5140#A11
BrandBroadcom
TWD513.50
Each (In a Tray of 50)
單位
500 Incremental - - 4 mm - - Through Hole - - 30000rpm -
RS庫存編號 796-7834
製造零件編號HEDS-5140#A11
BrandBroadcom
TWD632.00
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
TWD631.00
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
TWD512.10
Each (In a Tray of 50)
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
TWD915.80
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
TWD266.00
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 134-8197
製造零件編號ES14A0D-E28-L032N
BrandBourns
TWD2,152.00
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 878-0600
製造零件編號62A15-02-060S
BrandGrayhill
TWD1,497.00
單位
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Stripped Cable 100rpm 30mA
RS庫存編號 878-0669
製造零件編號60AD18-8-M-060C
BrandGrayhill
TWD2,635.00
單位
- 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庫存編號 134-8198
製造零件編號ES14A0D-E28-L064N
BrandBourns
TWD2,152.00
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 878-0603
製造零件編號62A11-02-060C
BrandGrayhill
TWD1,299.00
單位
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Connector 100rpm 30mA
RS庫存編號 134-8141
製造零件編號ES14A0D-E28-L032N
BrandBourns
TWD1,753.60
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 202-4409
製造零件編號RES20D-50-201-1
TWD2,994.00
毎盒:5 個
Box(es)
50 Incremental Digital Square Wave 5V dc 20 mm - - Panel Mount Slotted - - -
RS庫存編號 878-0426
製造零件編號62AG11-L0-060C
BrandGrayhill
TWD639.00
單位
- Quadrature 2-Bit Gray Code 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Ribbon Cable with Connector 100rpm 30mA
RS庫存編號 164-2633
製造零件編號ENS1J-B28-L00256L
BrandBourns
TWD2,519.00
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 878-0552
製造零件編號62A15-02-020C
BrandGrayhill
TWD1,460.00
單位
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Connector 100rpm 30mA
全新
RS庫存編號 213-1687
製造零件編號DMS22B5A1CAFL336N
BrandBourns
TWD1,317.10
Each (In a Tray of 50)
單位
12 bit - - 5V dc 22.225 mm - - - Flat - - -
RS庫存編號 202-0443
製造零件編號RE30E-1024-213-1
TWD3,039.00
單位
1024 Incremental Digital Square Wave 5 - 12V dc 4 mm - - Panel Mount Plain Cable - -
RS庫存編號 878-0509
製造零件編號62C1111-02-060C
BrandGrayhill
TWD2,880.00
單位
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 26.98mm Panel Mount Flat Connector 100rpm 50 mA @ 5 V dc