http://www.easternlighting.com - Led Track Lighting An LED lamp is a solid-state lamp that uses light-emitting diodes (LEDs) as the source of light. Light-Emitting Diodes lamps can be made interchangeable with other types of lamps. It can offer long service life and high energy efficiency, but the price are higher than those of fluorescent and incandescent lamps. Life cycle of LED lamps is multiple compared to incandescent lamps. LED lamps are used for both general and special-purpose lighting. Where colored light is needed, LEDs naturally emitting many colors are available, with no need for filters. This improves the energy efficiency over a white light source that generates all colors of light then discards some of the visible energy in a filter. LEDs using the color-mixing principle can emit a wide range of colors by changing the proportions of light generated in each primary color. This can be either an advantage or a disadvantage, depending on requirements. Compared to fluorescent bulbs LED light bulbs contain no mercury, that they turn on instantly, and that lifetime is unaffected by cycling on and off, so that they are well suited for light fixtures where bulbs are often turned on and off. LED light bulbs are also mechanically robust; most other artificial light sources are fragile. LED lamps have no glass tubes to break, and their internal parts are rigidly supported, making them resistant to vibration and impact. White LED lamps have achieved market dominance in applications where high efficiency is important at low power levels. Some of these applications include flashlights, solar-powered garden or walkway lights, and bicycle lights. Monochromatic (colored) LED lamps are now commercially used for traffic signal lamps, where the ability to emit bright monochromatic light is a desired feature, and in strings of holiday lights.
