A LED lamp (also called LED bar or Illuminator) is a type of solid state lighting (SSL) that uses light-emitting diodes (LEDs) as the source of light.
source : http://en.wikipedia.org/wiki/LED_lamp
- High efficiency - LEDs are now available that reliably offer over 100 lumens from a one-watt device, or much higher outputs at higher drive currents
- Small size - provides design flexibility, arranged in rows, rings, clusters, or individual points
- High durability - no filament or tube to break
- Life span - in properly engineered lamps, LEDs can last 50,000 - 60,000 hours
- Full dimmability – unlike fluorescent lamps, LEDs can be dimmed using pulse-width modulation (PWM - turning the light on and off very quickly at varying intervals). This also allows full color mixing in lamps with LEDs of different colors.
- Mercury-free - unlike fluorescent and most HID technologies, LEDs contain no hazardous mercury or halogen gases
- Traffic lights
- Automotive lighting
- Stage lighting
- Bicycle lighting
- Flashlight (Electric torches)
- Domestic lighting
- Public Transit Vehicle Destination signs
- Billboard displays
- Floodlighting of buildings
- Display lighting in art galleries to achieve a low heating effect on pictures etc.
- Train lights
- Railway signals
source : http://en.wikipedia.org/wiki/LED_lamp
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