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 Stock No. 878-0653
Mfr. Part No.60A18-4-060C
BrandGrayhill
HK$638.41
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. 878-0423
Mfr. Part No.62AG11-L5-060C
BrandGrayhill
HK$216.88
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. 878-0593
Mfr. Part No.62A11-02-040CH
BrandGrayhill
HK$608.23
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Connector 100rpm 30mA
RS Stock No. 878-2750
Mfr. Part No.62S15-M5-250SH
BrandGrayhill
HK$625.58
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Ribbon Cable with Stripped End - 25 mA @ 5.25 V dc
RS Stock No. 878-0616
Mfr. Part No.61B22-01-02-060
BrandGrayhill
HK$852.92
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.4mm Panel Mount Flat Cable 16.6 rpm @ 30 mS 30 mA @ 5 V dc
RS Stock No. 178-3142
Mfr. Part No.HEDS-5140#A11
BrandBroadcom
HK$126.959
Each (In a Tray of 50)
units
500 Incremental - - 4 mm - - Through Hole - - 30000rpm -
RS Stock No. 878-0571
Mfr. Part No.62A22-02-020C
BrandGrayhill
HK$584.91
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Connector 100rpm 30mA
RS Stock No. 162-2507
Mfr. Part No.ENA1J-B28-L00064L
BrandBourns
HK$317.736
Each (In a Tray of 42)
units
64 - Digital Square Wave 5V dc 6.35 mm - 22.23mm Bracket Mount Round - 3000rpm 26mA
RS Stock No. 878-0467
Mfr. Part No.62S22-M0-050C
BrandGrayhill
HK$576.36
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Ribbon Cable with Connector - 25 mA @ 5.25 V dc
RS Stock No. 878-0656
Mfr. Part No.60A18-8-060C
BrandGrayhill
HK$603.20
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. 878-0596
Mfr. Part No.62S11-M5-100CH
BrandGrayhill
HK$630.79
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Ribbon Cable with Connector - 25 mA @ 5.25 V dc
RS Stock No. 878-0612
Mfr. Part No.62A22-02-060S
BrandGrayhill
HK$600.68
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Stripped Cable 100rpm 30mA
RS Stock No. 878-0555
Mfr. Part No.62A15-02-060C
BrandGrayhill
HK$326.63
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Connector 100rpm 30mA
RS Stock No. 878-0622
Mfr. Part No.61KS64-020
BrandGrayhill
HK$875.82
Each
units
64 Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 18.4mm Surface Mount Flat Pin 300rpm 30 mA @ 5 V dc
RS Stock No. 878-0518
Mfr. Part No.62C2222-01-060C
BrandGrayhill
HK$984.92
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 26.98mm Panel Mount Flat Connector 100rpm 50 mA @ 5 V dc
RS Stock No. 878-0600
Mfr. Part No.62A15-02-060S
BrandGrayhill
HK$600.68
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Stripped Cable 100rpm 30mA
RS Stock No. 878-0628
Mfr. Part No.61B11-01-02-020
BrandGrayhill
HK$655.28
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.4mm Panel Mount Flat Cable 16.6 rpm @ 30 mS 30 mA @ 5 V dc
RS Stock No. 182-5672
Mfr. Part No.JT30-120-500
HK$887.29
Each
units
- Absolute - 5V dc 6 mm - 15mm - Flat Wire Lead - 40mA
RS Stock No. 878-0524
Mfr. Part No.62C2211-02-060C
BrandGrayhill
HK$1,030.87
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 26.98mm Panel Mount Flat Connector 100rpm 50 mA @ 5 V dc
RS Stock No. 878-0476
Mfr. Part No.62S11-M0-050C
BrandGrayhill
HK$577.87
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Ribbon Cable with Connector - 25 mA @ 5.25 V dc
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