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A 230-volt LED filament light bulb, with a B22 base. The filaments are visible as the four yellow vertical lines. A LED filament light bulb is a LED lamp which is designed to resemble a traditional incandescent light bulb with visible filaments for aesthetic and light distribution purposes, but with the high efficiency of light-emitting diodes (LEDs).
BulbAmerica is the largest wholesale seller of lightbulbs in the U.S. [1] The New York-based on-line outlet sells nearly 40,000 different light bulb types. [2] [3] BulbAmerica was started in 2003 by Corey Frons and is headquartered in Brooklyn, New York.
The first LED was created by Soviet inventor Oleg Losev [9] in 1927, but electroluminescence was already known for 20 years, and relied on a diode made of silicon carbide. Commercially viable LEDs only became available after Texas Instruments engineers patented efficient near-infrared emission from a diode based on GaAs in 1962.
Near-infrared light, or photobiomodulation, is used for treatment of chemotherapy-induced oral ulceration as well as wound healing. There is some work relating to anti-herpes virus treatment. [ 62 ] Research projects include work on central nervous system healing effects via cytochrome c oxidase upregulation and other possible mechanisms.
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