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

    Bourns
    64
    -
    -
    Digital Square Wave
    5V dc
    6.35 mm
    -
    -
    22.23mm
    Bracket Mount
    Round
    -
    3000rpm
    Broadcom
    500
    Incremental
    -
    -
    -
    4 mm
    -
    -
    -
    Through Hole
    -
    -
    30000rpm
    NIDEC COPAL ELECTRONICS GMBH
    1000
    Incremental
    -
    Digital Square Wave
    24V dc
    4 mm
    -
    -
    -
    -
    -
    -
    -
    Broadcom
    318 LPI
    Incremental
    -
    2 Channel Quadrature with Index Digital
    3.3V dc, 5V dc
    -
    AEC-Q100 Grade 1
    -
    -
    Surface Mount
    -
    -
    -
    NIDEC COPAL ELECTRONICS GMBH
    1024
    Incremental
    -
    Digital Square Wave
    24V dc
    4 mm
    -
    -
    -
    -
    -
    -
    -
    NIDEC COPAL ELECTRONICS GMBH
    500
    Incremental
    -
    Digital Square Wave
    5→12V dc
    4 mm
    -
    -
    -
    -
    -
    -
    -
    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature
    5V dc
    -
    -
    -
    -
    -
    Hollow
    -
    30000rpm
    Broadcom
    -
    Incremental
    256
    2 Channel Quadrature with Index Digital
    5V dc
    -
    -
    -
    -
    -
    -
    -
    30000rpm
    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature with Index Pulse
    5V dc
    1/4 in
    -
    -
    -
    -
    Hollow
    -
    30000rpm
    NIDEC COPAL ELECTRONICS GMBH
    500
    Incremental
    -
    Digital Square Wave
    24V dc
    4 mm
    -
    -
    -
    -
    -
    -
    -
    Baumer
    100
    Incremental
    100
    Digital
    4.75 → 30V dc
    10 mm
    -
    -
    20mm
    Flange Mount
    Solid
    Connector
    <= 12000rpm
    NIDEC COPAL ELECTRONICS GMBH
    400
    Incremental
    -
    Digital Square Wave
    24V dc
    4 mm
    -
    -
    -
    -
    -
    -
    -
    Nidec Components
    50
    Incremental
    -
    Digital Square Wave
    5V dc
    20 mm
    -
    -
    -
    Panel Mount
    Slotted
    -
    -
    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature with Index Pulse
    5V dc
    6 mm
    -
    -
    -
    -
    Hollow
    -
    30000rpm
    Baumer
    200
    Incremental
    200
    Digital
    4.75 → 30V dc
    10 mm
    -
    -
    20mm
    Flange Mount
    Solid
    Connector
    <= 12000rpm
    Grayhill
    -
    Quadrature
    -
    2-Bit Quadrature
    5V dc
    6.35 mm
    -
    -
    17.44mm
    Surface Mount
    Flat
    Connector
    100rpm
    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature with Index Pulse
    5V dc
    4 mm
    -
    -
    -
    -
    Hollow
    -
    30000rpm
    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature with Index Pulse
    5V dc
    6 mm
    -
    -
    -
    -
    Hollow
    -
    -
    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature with Index Pulse
    5V dc
    -
    -
    -
    -
    -
    Hollow
    -
    30000rpm
    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature
    5V dc
    -
    -
    -
    -
    -
    Hollow
    -
    30000rpm
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