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 worksOptical 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 encodersOptical 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. 878-0521
Mfr. Part No.25LB22-H
BrandGrayhill
£5.36
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
RS Stock No. 878-0527
Mfr. Part No.25LB10-Q
BrandGrayhill
£5.06
Each
Units
- 2 bit Quadrature Quadrature 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. 878-0495
Mfr. Part No.25LB15-Q
BrandGrayhill
£5.06
Each
Units
- 2 bit Quadrature Quadrature 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. 878-0439
Mfr. Part No.62AG22-L0-060C
BrandGrayhill
£17.83
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. 878-0537
Mfr. Part No.61R128
BrandGrayhill
£78.39
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. 878-0656
Mfr. Part No.60A18-8-060C
BrandGrayhill
£46.11
Each
Units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 14.73mm Panel Mount Flat Connector - 20 mA @ 5 V dc (Rotary), 5 (Joystick) mA
RS Stock No. 878-0451
Mfr. Part No.61C11-01-08-01
BrandGrayhill
£37.74
Each
Units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.45mm Panel Mount Flat PC Pin 16.6 rpm @ 30 mS 30 mA @ 5 V dc
RS Stock No. 878-0426
Mfr. Part No.62AG11-L0-060C
BrandGrayhill
£16.17
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. 878-0445
Mfr. Part No.62AG22-L5-P
BrandGrayhill
£19.46
Each
Units
- Quadrature 2-Bit Gray Code 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Pin 100rpm 30mA
RS Stock No. 878-0420
Mfr. Part No.62AG22-L5-060C
BrandGrayhill
£15.77
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. 878-0448
Mfr. Part No.62AG22-L0-P
BrandGrayhill
£18.07
Each
Units
- Quadrature 2-Bit Gray Code 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Pin 100rpm 30mA
RS Stock No. 878-2753
Mfr. Part No.62AY22060
BrandGrayhill
£61.55
Each
Units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - - Panel Mount Flat Cable 100rpm 30 mA @ 5 V dc
RS Stock No. 878-0549
Mfr. Part No.61R128-075
BrandGrayhill
£90.73
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. 878-0454
Mfr. Part No.26GSD45-01-1-AJS
BrandGrayhill
£24.67
Each
Units
- Quadrature 4 Bit Binary, BCD Output, Gray Code, Hexadecimal Code, Octal Code, Quadrature Code - 3.18 mm - 15.88mm Panel Mount Flat - - -
RS Stock No. 878-0482
Mfr. Part No.26GSD22-01-1-AJS
BrandGrayhill
£26.23
Each
Units
- Quadrature 4 Bit Binary, BCD Output, Gray Code, Hexadecimal Code, Octal Code, Quadrature Code - 3.18 mm - 15.88mm Panel Mount Flat - - -
RS Stock No. 878-0530
Mfr. Part No.25LB22-G
BrandGrayhill
£5.06
Each
Units
- 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 Stock No. 878-0669
Mfr. Part No.60AD18-8-M-060C
BrandGrayhill
£59.86
Each
Units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 14.78mm Panel Mount Flat Connector 100rpm 20 mA @ 5 V dc (Rotary), 5 (Joystick) mA
RS Stock No. 878-0634
Mfr. Part No.60AR18-8-060C
BrandGrayhill
£98.63
Each
Units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm 17.25mm 21.67mm Surface Mount Flat Connector 100rpm 20 mA @ 5 V dc (Rotary), 5 (Joystick) mA
RS Stock No. 878-0577
Mfr. Part No.62A11-02-P
BrandGrayhill
£23.68
Each
Units
- Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 17.42mm - Flat Pin 100rpm 30mA
RS Stock No. 878-0619
Mfr. Part No.62A22-02-060C
BrandGrayhill
£28.92
Each
Units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Connector 100rpm 30mA