Optical Rotary Encoders | Angular Sensors | RS
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    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.

    203 Products showing for Optical Rotary Encoders

    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature with Index Pulse
    5V dc
    -
    -
    -
    -
    -
    -
    -
    -
    Broadcom
    -
    Incremental
    200
    2 Channel Quadrature
    5V dc
    -
    -
    -
    -
    -
    Hollow
    -
    30000rpm
    Broadcom
    500
    Incremental
    500
    2 Channel Quadrature
    5V dc
    1/4 in
    -
    -
    -
    -
    Hollow
    -
    30000rpm
    Grayhill
    -
    2 bit Quadrature
    -
    Hex Code
    -
    6.35 mm
    -
    -
    19.05mm
    Panel Mount
    Flat
    -
    -
    Broadcom
    225 LPI
    Incremental
    -
    2 Channel Quadrature with Index Digital
    3.3V dc, 5V dc
    -
    -
    -
    -
    -
    -
    -
    -
    NIDEC COPAL ELECTRONICS GMBH
    25
    Incremental
    -
    Digital Square Wave
    5V dc
    8 mm
    -
    -
    -
    -
    -
    -
    -
    Nidec Components
    25
    -
    -
    Digital Square Wave
    5V dc
    6 mm
    -
    M9
    16.5mm
    Through Hole
    Flat
    Wire Lead
    -
    Broadcom
    225 LPI
    Incremental
    -
    2 Channel Quadrature with Index Digital
    3.3V dc, 5V dc
    -
    AEC-Q100 Grade 1
    -
    -
    Surface Mount
    -
    -
    -
    Nidec Components
    50
    -
    -
    Digital Square Wave
    5V dc
    6 mm
    -
    M9
    12mm
    -
    Round
    Wire Lead
    -
    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature with Index Pulse
    5V dc
    1/4 in
    -
    -
    -
    -
    Hollow
    Cable
    30000rpm
    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature
    5V dc
    -
    -
    -
    -
    -
    -
    -
    -
    NIDEC COPAL ELECTRONICS GMBH
    1000
    Incremental
    -
    Digital Square Wave
    24V dc
    4 mm
    -
    -
    -
    -
    -
    -
    -
    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature
    5V dc
    -
    -
    -
    -
    -
    Hollow
    -
    30000rpm
    Nidec Components
    50
    -
    -
    Digital Square Wave
    5V dc
    6 mm
    -
    M9
    12mm
    -
    Round
    Wire Lead
    -
    Nidec Components
    25
    -
    -
    Digital Square Wave
    5V dc
    6 mm
    -
    9mm
    -
    Through Hole
    Flat
    -
    -
    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature with Index Pulse
    5V dc
    -
    -
    -
    -
    -
    Hollow
    -
    30000rpm
    Baumer
    1000
    Incremental
    1000
    Digital
    8 → 30V dc
    12 mm
    -
    -
    -
    Flange Mount
    Hollow
    Connector
    <= 6000rpm
    Nidec Components
    25
    -
    -
    Digital Square Wave
    5V dc
    6 mm
    -
    9mm
    -
    Through Hole
    Flat
    -
    -
    Broadcom
    500
    Incremental
    -
    -
    5V dc
    4 mm
    -
    -
    -
    -
    Hollow
    Center Ribbon Cable with Connector
    -
    Nidec Components
    1024
    Incremental
    -
    Digital Square Wave
    5 - 12V dc
    4 mm
    -
    -
    -
    Panel Mount
    Plain
    Cable
    -
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