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  2. LED tube - Wikipedia

    en.wikipedia.org/wiki/LED_tube

    LED tubes. LED tube is a type of LED lamp used in fluorescent tube luminaires with G5 and G13 bases to replace traditional fluorescent tubes. [1] As compared to fluorescent tubes, the most important advantages of LED tubes are energy efficiency and long service life. LED tubes are sometimes also referred to as ‘LED fluorescent tubes’.

  3. Fluorescent-lamp formats - Wikipedia

    en.wikipedia.org/wiki/Fluorescent-lamp_formats

    In the 1970s, Thorn Lighting introduced an energy-saving 8 ft retrofit tube in Europe. Designed to run on the existing 125 W (240 V) series ballast but with a different gas fill and operating voltage, the tube operated at only 100 W. Increased efficiency meant that the tube produced only 9% lumen reduction for a 20% power reduction. [ 7 ]

  4. Lightguide display - Wikipedia

    en.wikipedia.org/wiki/Lightguide_display

    Light guide LEDs using plastic light guides on a network switch The technology was rendered obsolete by the development of light-emitting diodes (LED) in the 1970s, though lightguide tubes are still used in electronics manufacturing, in situations where it is difficult to place an LED in the appropriate physical location on a display or bezel.

  5. Light tube - Wikipedia

    en.wikipedia.org/wiki/Light_tube

    The 3M company developed a system based on optical lighting film [36] and developed the 3M light pipe, [37] which is a light guide designed to distribute light uniformly over its length, with a thin film incorporating microscopic prisms, [26] which has been marketed in connection with artificial light sources, e.g. sulfur lamps.

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  7. Fluorescent lamp - Wikipedia

    en.wikipedia.org/wiki/Fluorescent_lamp

    Fluorescent tubes are long, low-luminance sources compared with high intensity discharge lamps, incandescent and halogen lamps and high power LEDs. However, low luminous intensity of the emitting surface is useful because it reduces glare. Lamp fixture design must control light from a long tube instead of a compact globe.

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