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Advantages of using LEDs

Sources:ophirlighting browse:3908 Uploadtime :2012/4/11

Efficacy------LEDs produce morelumens per watt than incandescent bulbs ; this is useful in battery powered or energy-saving devices.
  Color------LEDs can emit light of an intended color without the use of color filters that traditional ighting methods require. This is more efficient and can lower initial costs. 

  Size------LEDs can be very small (>2 mm2) and are easily populated onto printed circuit boards. 

  On/Off time------LEDs light up very quickly.A typical red indicator LED will achieve full brightness in microseconds. LEDs used in communications devices can have even faster response times. 

  Cycling------LEDs are ideal for use in applications that are subject to frequent on-off cycling , unlike fluorescent lamps that burn out more quickly when cycled frequently, or HID lamps that require a long time before restarting.
  Dimming------LEDs can very easily be dimmed either by Pulse-width modulation or lowering the forward current. 

  Slow faliure------LEDs mostly fail by dimming over time, rather than the abrupt burn-out of incandescent bulbs. 

  Lifetime------LEDs can have a relatively long useful life.One report estimates 35,000 to 50,000 hours of useful life, though time to complete failure may be longer . Fluorescent tubes typically are rated at about 30,000 hours, and incandescent light bulbs at 1,000–2,000 hours. [citation needed]
  Shock resistance------LEDs,being solid state components,are very difficult to damage with external shock , unlike fluorescent and incandescent bulbs which are fragile. 

  Focus------The solid package of the LED can be designed to focus its light.Incandescent and fluorescent sources often require an external reflector to collect light and direct it in a usable manner.
  Toxicity------LEDs do not contain mercury, unlike fluorescent lamps.


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