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    Omron Photoelectric Sensors

    What are Photoelectric Sensors?

    Photoelectric sensors determine the distance, absence, or presence of physical objects by emitting a field or beam of electromagnetic radiation. An object is detected by measuring alterations in the return signal, this is achieved as sensors have an Emitter for emitting light and a Receiver for receiving light. There are 3 main types of photoelectric sensors, through-beam, retro-reflective and diffuse, which vary slightly in the way they function.

    The basic function of each is to detect the presence or absence of objects or measure the distance to the object. You can learn more in our complete guide to photoelectric sensors.

    Types of Photoelectric Sensors:

    Through-beam Sensors

    Through Beam Sensors (aka thru-beam) rely on two separate housings, one for the transmitter and one for the receiver, with the transmitter providing a continuous beam of light to the receiver. Each time an object passes through the beam this interrupts the signal between the transmitter and receiver, which in turn causes the receiver to send an electrical signal to the output. Through-beam sensors are suited to long-distance sensing and can detect almost any object, irrespective of colour or angular motion.

    Retro-reflective Sensors

    Retro-reflective photoelectric sensors (retroreflective) have both the transmitter and receiver contained within the same housing but require a reflector opposite to the sensor. The reflector bounces the light beam back to the transmitter until an object breaks the beam. Objects which are highly reflective such as aluminium require sensors with polarising filters. The filter allows the sensor to acknowledge that the reflected light from reflecting materials is different from the reflector.

    Diffuse Sensors

    Diffuse sensors (proximity sensor) are easier to install as only one device must be mounted. This is because the transmitter and receiver are contained within one housing. Diffuse sensors use the reflection from the target object within a predetermined sensing range.

    The transmitter sends out a continuous beam of light, once this hits the target it is diffused in all directions, a part of this light is reflected and recognised by the receiver, the receiver then sends an electrical signal to the output. A special type of diffused mode is background suppression which enables the user to precisely control the sensing range.

    Applications of Photoelectric Sensors

    Photoelectric Sensors can be used in various settings, some of which include:

    • Food Industry
    • Pharmaceutical Industry
    • Packaging Plants
    • Automotive Industry
    • Doors & Gates

    Browse the broad range of Photoelectric Sensors RS Components have to offer and order today for next day delivery.

    748 Products showing for Omron Photoelectric Sensors

    Omron
    Barrel
    Retroreflective
    0 → 500 mm
    NPN
    M12 4 Pin Connector
    -
    -
    -
    30V
    -
    -
    LED
    IP67, IP69K
    25 mA
    -
    500 μs
    -
    ABS
    +55°C
    -25°C
    -
    E3F
    Omron
    Barrel
    Diffuse
    100 mm
    PNP
    M12 Connector
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    E3FA/B_-F2
    Omron
    Barrel
    Retroreflective
    100 mm → 4 m
    PNP
    M12 4 Pin Connector
    Light / Dark switching
    -
    -
    30V
    -
    -
    LED
    IP67, IP69K
    25 mA
    -
    500 μs
    -
    ABS
    +55°C
    -25°C
    Flange Mount
    E3F
    Omron
    Fork
    Through Beam
    5 mm
    NPN
    -
    -
    -
    -
    24V
    -
    Connector
    Infrared
    IP50
    12 mA
    -
    -
    -
    PBT
    +55°C
    -25°C
    -
    -
    Omron
    Block
    Retroreflective
    1 mm → 5 mm
    NPN
    Non-Solder Connector
    -
    -
    -
    24V
    -
    -
    Infrared
    IP50
    100 mA
    -
    -
    -
    PBT
    +55°C
    -25°C
    -
    -
    Omron
    -
    -
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    NPN
    -
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    -
    -
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    GaAs Infrared LED
    IP60
    -
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    -
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    Polybutylene Phthalate
    -
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    -
    -
    Omron
    Fork
    Through Beam
    5 mm
    NPN
    Connector
    Light / Dark switching
    -
    -
    24V
    -
    -
    Infrared
    IP50
    100 mA
    -
    0.17 ms
    -
    PBT
    +55°C
    -25°C
    -
    EE-SX67
    Omron
    Fork
    Through Beam
    5 mm
    NPN
    Pre-Wired Cable
    -
    -
    -
    24V
    -
    -
    Infrared
    IP60
    35 mA
    -
    -
    -
    Polybutylene Phthalate
    +55°C
    -25°C
    -
    -
    Omron
    Barrel
    Diffuse
    300 mm
    PNP
    M12 Connector
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
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    E3FA
    Omron
    Barrel
    Clear Object Detection
    100 mm → 2 m
    PNP
    M12 4 Pin Connector
    -
    -
    -
    30V
    -
    -
    LED
    IP67, IP69K
    25 mA
    -
    500 μs
    -
    ABS
    +55°C
    -25°C
    -
    E3F
    Omron
    Block
    Through Beam
    -
    Phototransistor
    -
    -
    1.5V
    -
    -
    -
    PCB Pin
    -
    -
    50 mA
    -
    4 μs
    -
    -
    +85°C
    -25°C
    -
    -
    Omron
    Slot
    Through Beam
    5 mm
    NPN
    -
    Light / Dark switching
    -
    -
    24V
    -
    Pre-Wired
    Infrared
    IP50
    35 mA
    -
    0.17 ms
    -
    PBT
    +55°C
    -25°C
    -
    EE
    Omron
    Fork
    Through Beam
    5 mm
    NPN
    Yes
    Light / Dark switching
    -
    -
    24V
    -
    Pre-Wired
    Infrared
    IP50
    35 mA
    -
    -
    -
    PBT
    +55°C
    -25°C
    -
    EE-SX47/67
    Omron
    -
    -
    -
    NPN
    -
    -
    -
    -
    -
    -
    -
    GaAs Infrared LED
    IP60
    -
    -
    -
    -
    Polybutylene Phthalate
    -
    -
    -
    -
    Omron
    Fork
    Through Beam
    5 mm
    NPN
    Connector
    Light / Dark switching
    -
    -
    24V
    -
    PCB Pin
    Infrared
    IP50
    100 mA
    -
    -
    -
    PBT
    +55°C
    -25°C
    -
    EE-SX47/67
    Omron
    Block
    Retroreflective
    100 mm → 500 mm
    NPN
    M8 4 Pin Connector
    -
    -
    -
    30V
    -
    -
    LED
    IP67, IP69K
    100 mA
    -
    1 ms
    -
    Stainless Steel
    -
    -
    -
    E3ZM
    Omron
    Fork
    Through Beam
    5 mm
    NPN
    Connector
    Light / Dark switching
    -
    -
    24V
    -
    -
    Infrared
    IP50
    100 mA
    -
    -
    -
    PBT
    +55°C
    -25°C
    -
    EE-SX47/67
    Omron
    Barrel
    Diffuse
    300 mm
    NPN
    4 Wire Cable 2 m
    -
    -
    -
    30V
    -
    -
    LED
    IP67, IP69K
    25 mA
    -
    500 μs
    -
    Nickel Plated Brass
    +55°C
    -25°C
    -
    E3F
    Omron
    -
    Diffuse
    150 mm
    -
    -
    -
    -
    -
    -
    -
    Wire Lead
    LED
    IP67
    -
    -
    -
    -
    PE
    +70°C
    -40°C
    -
    E32
    Omron
    Barrel
    Diffuse
    10 mm → 50 mm
    NPN
    M12 4 Pin Connector
    -
    -
    -
    30V
    -
    -
    LED
    IP67, IP69K
    25 mA
    -
    500 μs
    -
    ABS
    +55°C
    -25°C
    -
    E3F
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