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Light Sensors

Light sensors, also known as photoelectric sensors, are devices that are used to detect the absence or presence of an object, and the distance that the object is away from the source. Light sensors do this using a photo transmitter, which is usually infrared, and a photoelectric receiver. Types of light sensors include colour and colour contrast photoelectric sensors, distance photoelectric sensors and laser photoelectric sensors. The most common type of light sensors are optical (or slot) photoelectric sensors. Light sensors have a vast range of uses in both domestic and industrial applications, from security lighting to ambient lighting controls.

  • Alrad Instruments Ltd

    Alrad Instruments Ltd

    Through our six technology divisions, ALRAD Imaging, ALRAD Electronics, ALRAD Photonics, ALRAD Medical, ALRAD Thermal and ALRAD Vacuum, we offer thousands of product items from the world's leading manufacturers. We also provide installation, demonstration, and product support services. 

    We represent many of our principals as their sole distributor in the UK. Some of these exclusive companies have been with us since the 1970s, many of our distribution agreements have been in place for a very long time and that must say something about the service we offer. The products and service we provide open up new opportunities for our customers to improve quality,automation and productivity which is why many of our existing customers have been experiencing ALRAD high quality service for decades.

    Alrad employ experienced staff to help our customers generate a competitive edge for their companies backed by world class products.

    Alrad are members of the UKIVA (United Kingdom Industrial Vision Association) group of organizations and companies within the PPMA ( Processing and Packaging Machinery Association).


    ALRAD Imaging supplies imaging components, equipment and services to both industrial system integrators, OEMs, scientific and research customers.

    ALRAD Electronics provides a wide range of optical detectors, laser products, high voltage components, optoelectronic sockets, analytical systems and densitometers.

    ALRAD Photonics offers Infrared detectors, power supplies, laser diode modules, photodetectors, optoelectronic components , optical filters, diffraction gratings and laser accessories.

    ALRAD Medical is responsible for the marketing and sales of air disinfection systems, endoscope cameras, medical screening, molecular detection, personal protection equipment, temperature screening, UV sterilization and UV C Germicidal LED Lighting.

    ALRAD Thermal is responsible for marketing and sales of automotive thermal cameras, commercial vision thermal cameras, thermal industrial cameras, thermal security cameras and thermography thermal cameras

    ALRAD Vacuum provides a range of product for high vacuum and space applications including electron multipliers, long distance microscopes for vacuum chamber ports and vacuum image sensors

    If you need any help in selecting the right product for your application
    please call our friendly sales office on 01635 937000
    we will be pleased to assist you.

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