Products/Services for Phototransistor Light Detectors

  • Photodiodes-Image
    Photodiodes - (231 companies) the peak sensitivity wavelength. Rise time is the time necessary for a detector's output to go from 10% to 90% of its final value. A photodiode's capability to convert light energy to electrical energy, expressed as a percentage, is its quantum efficiency...
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    PN, PIN, or Avalanche
    Spectral Response
  • Phototransistors-Image
    Phototransistors - (92 companies)
    Phototransistors are solid-state light detectors with internal gain that are used to provide analog or digital signals. They detect visible, ultraviolet and near-infrared light from a variety of sources and are more sensitive than photodiodes...
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  • Light Curtains-Image
    Light Curtains - (229 companies)
    Light curtains are photoelectric transmitters that project infrared beams to a receiver. They are used to guard openings and work spaces in or around machinery. When an opaque object interrupts the infrared beam, a stop signal is sent...
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  • Light Sensor Chips-Image
    Light Sensor Chips - (33 companies)
    ...phototransistors and photodiodes. Phototransistors amplify variations in light and output a voltage. They are more sensitive than photodiodes and may or may not have a base lead. Photodiodes are solid-state light detectors with a radiation-sensitive...
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  • Lux Meters (Light Meters)-Image
    Lux Meters (Light Meters) - (151 companies)
    ...range. Photodetectors composed of selenium or silicon determine brightness photovoltaically. Generated current is proportional to the photons received. Silicon-based detectors need to amplify the voltage generated by light exposure. Selenium-based...
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    Photoelectric Sensors - (434 companies)
    ...a photodiode or phototransistor receiver, and supporting electronics. The basic operating principal involves the emitter (sender) transmitting a beam of light, which is directed to and detected by the receiver. This video shows a variety of sensor...
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    Optocouplers - (141 companies)
    ...the earliest optocoupler design. They use an incandescent light bulb, neon lamp, or LED as their light source, and a cadmium sulfide (CS) or cadmium selenide (CSe) photoresistor as their detector. Photocells are largely obsolete due to their very slow...
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    Color Sensors - (99 companies)
    ...or shades for sorting operations. Some types of color sensors do not recognize colors, per se, instead focusing on light wavelengths. These devices can be configured to locate wavelengths from near infrared (colors in the 750 nm to 2500 nm wavelength range...
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    HPLC Detectors - (49 companies)
    High performance liquid chromatograph (HPLC) detectors pass a beam of light through a column effluent as the fluid passes through a low-volume flow cell. Variations in light intensity are recorded and a chromatograph is generated. HPLC detectors use...
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    Smoke Detectors - (278 companies)
    ...contain a very small amount of radioactive material, however, and require proper disposal. Photoelectric smoke detectors contain a light and a sensor that are at 90-degree angles to one another. Normally, the light from a light source on the left moves...
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