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Fiber optic technology is also used in holiday lighting, especially by incorporating it into artificial Christmas trees. Incandescent lamps or LEDs are located in the tree base and many optic fibers extend from the lamps to the ends of the tree branches. [4] [citation needed]
A pre-lit tree is an artificial Christmas tree which is pre-wired with Christmas lights. The lights are wrapped around the tree before it is sold, reducing set up time and making storage simpler. The lights cannot usually be removed from the tree because they are normally embedded within the artificial branches.
Fiber optic trees come in two major varieties, one resembles a traditional Christmas tree. [17] The other type of fiber optic Christmas tree is one where the entire tree is made of wispy fiber optic cable, a tree composed entirely of light. [17] David Gutshall, of Johnstown, Pennsylvania, received a patent for the latter type of fiber optic ...
These fiber optic coating layers are applied during the fiber draw, at speeds approaching 100 kilometers per hour (60 mph). Fiber optic coatings are applied using one of two methods: wet-on-dry and wet-on-wet. In wet-on-dry, the fiber passes through a primary coating application, which is then UV cured, then through the secondary coating ...
Tung-Sol was producing replacement equipment lamps for Atlas Supply Company and identification was embossed with their logo above "SEALED BEAM" as differentiating from the Westinghouse and General Electric produced lamps with Atlas name. A top most number as 1 indicates a high beam lamp and a 2 indicates a low or twin beam lamp.
[19] [20] The optic fibers in this system are made of PMMA (PolyMethyl MethAcrylate) and sheathed with Megolon, a halogen-free thermoplastic resin. A system such as this, however, is quite expensive. [21] The Parans system [22] consists of three parts. A collector, fiber optic cables, and luminaires spreading the light indoors. One or more ...
Efficiency: LEDs emit more lumens per watt than incandescent light bulbs. [63] The efficiency of LED lighting fixtures is not affected by shape and size, unlike fluorescent light bulbs or tubes. Size: LEDs can be very small (smaller than 2 mm 2 [64]) and are easily attached to printed circuit boards.
Therefore, most contemporary "black-light" bulbs are made of structurally more suitable glass with only a layer of a UV-filtering enamel on its surface; [citation needed] such bulbs, however, pass much more visible light, appearing brighter to the eye. Due to manufacturing difficulties, Wood's glass is now more commonly used in standalone flat ...
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