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Halogen lamps are sometimes used for inspection lights and microscope stage illuminators. Halogen lamps were used for early flat-screen LCD backlighting, but other types of lamps such as CCFL and now LED are used. Halogen lamps are used as the heating element in the fuser of many types of laser printers. The long tubular lamp heats the fuser ...
The halogen bulb can reach temperatures over 200 °C (400°F), [5] increasing the risk of fire should anything flammable come in contact or even be in close proximity to the bulb or fixture. The quartz capsule containing the filament and halogen gas is pressurized and can explode if improperly handled or damaged, and must be handled carefully ...
Like all HID lamps, HQI lamps operate under high pressure and temperature, and require special light fixtures for safe use. HQI lamps can produce different color temperatures when manufactured with different metal halides. They are relatively efficient light sources producing a high lumen per watt ratio (approximately 6x that of incandescent ...
The first high voltage halogen lamps which permitted a higher performance upgrade over traditional incandescent reflector lamps. 1995 — Mercury-Free HPS; Invention of the world's first mercury-free HID lamp. [11] 1996 — HiSpot ES50; Invention of the GU10 lamp cap and compact mains voltage halogen lamp, offering transformer-free operation. [12]
The suffix after the G indicates the pin spread; the G dates to the use of Glass for the original bulbs. GU usually also indicates that the lamp provides a mechanism for physical support by the luminaire: in some cases, each pin has a short section of larger diameter at the end (sometimes described as a "peg" rather than a "pin" [2]); the socket allows the bulb to lock into place by twisting ...
Like other gas-discharge lamps such as the very-similar mercury-vapor lamps, metal-halide lamps produce light by ionizing a mixture of gases in an electric arc.In a metal-halide lamp, the compact arc tube contains a mixture of argon or xenon, mercury, and a variety of metal halides, such as sodium iodide and scandium iodide. [7]