Taiwan Lighting Equipment Manufacturing
Incandescent light bulbs are mass produced on a conveyor belt where ribbons of glass are fed through a special machine that includes a firing furnace and air nozzles that blows the molten glass into individual molds. Tungsten or other metal wire filaments are separately produced through metallurgy and fed into the bulb on a glass stem. The interior of the bulb is evacuated with a pump or the air is displaced within an inert gas to preserve the filament from chemical reactions and to prolong its operational lifecycle. Fluorescent bulbs and lamps use a similar filament called a cathode that emits electrons in an evacuated bulb. Evaporation and other applications methods are used to coat the inside of the bulb with a fluorescent or phosphorescent coating.
LEDs or solid state lighting devices are semiconductors produced through metal organic chemical vapor deposition (MOCVD) or other epitaxy methods with accompanying packaging steps.
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