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A set of modern LED flashlights. A flashlight or electric torch (Commonwealth English), usually shortened to torch, is a portable hand-held electric lamp.Formerly, the light source typically was a miniature incandescent light bulb, but these have been displaced by light-emitting diodes (LEDs) since the early 2000s.
The original device consists of an inflatable LED lantern rechargeable by solar light. [13] [14] There are various models of Luci on the market today. Depending on the specific model, they generally take 7-25 hours of direct sunlight to charge [15] [16] and are able to provide 6-50 hours of light depending on the light mode and model [17] [18]
The linear induction, Faraday flashlight, or "shake flashlight" is another type of mechanically powered flashlight. It has been sold in the US beginning with direct marketing campaigns in 2002. This design contains a linear electrical generator which charges a supercapacitor which functions similarly to a rechargeable battery when the ...
A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...
Olight is a flashlight brand [4] that was founded in 2007 by Fox Fan. [5] The brand is headquartered in Taiwan, [6] and has operations in Georgia, United States. [7] Olight specializes in the production of flashlights, [8] including LED flashlights, [9] survival lights, [10] and tactical flashlights. [11] In addition, it also produces headlamps ...
The other is to use a phosphor material to convert monochromatic light from a blue or UV LED to broad-spectrum white light, similar to a fluorescent lamp. The yellow phosphor is cerium-doped YAG crystals suspended in the package or coated on the LED. This YAG phosphor causes white LEDs to appear yellow when off, and the space between the ...