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

    Nidec Components
    50
    -
    -
    Digital Square Wave
    5V dc
    6 mm
    -
    M9
    16.5mm
    Through Hole
    Flat
    Wire Lead
    -
    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
    25
    Incremental
    -
    Digital Square Wave
    5V dc
    6 mm
    -
    -
    -
    -
    -
    -
    -
    Nidec Components
    400
    Incremental
    -
    Digital Square Wave
    5 - 12V dc
    4 mm
    -
    -
    -
    Panel Mount
    Plain
    Cable
    -
    Broadcom
    500
    Incremental
    -
    -
    -
    4 mm
    -
    -
    -
    Through Hole
    -
    -
    30000rpm
    Broadcom
    -
    Incremental
    1000
    2 Channel Quadrature
    5V dc
    -
    -
    -
    -
    -
    Hollow
    -
    30000rpm
    Broadcom
    500
    Incremental
    -
    -
    5V dc
    4 mm
    -
    -
    -
    -
    Hollow
    Center Ribbon Cable with Connector
    -
    NIDEC COPAL ELECTRONICS GMBH
    200
    Incremental
    -
    Digital Square Wave
    24V dc
    4 mm
    -
    -
    -
    -
    -
    -
    -
    NIDEC COPAL ELECTRONICS GMBH
    50
    Incremental
    -
    Digital Square Wave
    5V dc
    8 mm
    -
    -
    -
    -
    -
    -
    -
    NIDEC COPAL ELECTRONICS GMBH
    50
    Incremental
    -
    Digital Square Wave
    5V dc
    8 mm
    -
    -
    -
    -
    -
    -
    -
    NIDEC COPAL ELECTRONICS GMBH
    25
    Incremental
    -
    Digital Square Wave
    5V dc
    8 mm
    -
    -
    -
    -
    -
    -
    -
    Grayhill
    -
    Quadrature
    -
    2-Bit Quadrature
    5V dc
    6.35 mm
    -
    -
    17.45mm
    Panel Mount
    Flat
    PC Pin
    16.6 rpm @ 30 mS
    NIDEC COPAL ELECTRONICS GMBH
    25
    Incremental
    -
    Digital Square Wave
    5V dc
    6 mm
    -
    -
    -
    -
    -
    -
    -
    Bourns
    256
    Incremental
    -
    Digital Square Wave
    5V dc
    6.35 mm
    -
    9.5mm
    22.23mm
    Bracket Mount
    Round
    -
    3000rpm
    NIDEC COPAL ELECTRONICS GMBH
    25
    Incremental
    -
    Digital Square Wave
    5V dc
    6 mm
    -
    -
    -
    -
    -
    -
    -
    NIDEC COPAL ELECTRONICS GMBH
    25
    Incremental
    -
    Digital Square Wave
    5V dc
    8 mm
    -
    -
    -
    -
    -
    -
    -
    Grayhill
    -
    Quadrature
    -
    2-Bit Quadrature
    5V dc
    6.35 mm
    -
    -
    26.9mm
    Panel Mount
    Flat
    Pin
    100rpm
    Broadcom
    -
    Incremental
    500
    2 Channel Quadrature with Index Pulse
    5V dc
    6 mm
    -
    -
    -
    -
    -
    -
    30000rpm
    Broadcom
    318 LPI
    Incremental
    -
    2 Channel Quadrature with Index Digital
    5V dc
    -
    -
    -
    -
    Surface Mount
    -
    -
    -
    Bourns
    128
    Incremental
    -
    Digital Square Wave
    5V dc
    6.342 mm
    -
    0.99mm
    22.23mm
    Bracket Mount
    Plain
    Axial PC Pin
    3000rpm
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