Features of LED Lights

Efficiency:

LEDs emit more light per watt than incandescent light bulbs. Their efficiency is not affected by shape and size, unlike fluorescent light bulbs or tubes.

 
Color:

LEDs can emit light of an intended color without using any color filters as traditional lighting methods need. This is more efficient and can lower initial costs.

 
Size:

LEDs can be very small (smaller than 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 under in under a microsecond.

 
Cycling:

LEDs are ideal for uses subject to frequent on-off cycling, unlike fluorescent lamps that fail faster when cycled often, 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.

 
Cool light:

In contrast to most light sources, LEDs radiate very little heat that can cause damage to sensitive objects or fabrics.

 
Slow failure:

LEDs mostly fail by dimming over time, rather than the abrupt failure of incandescent bulbs.

 
Lifetime:

LEDs can have a 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 10,000 to 15,000 hours, depending partly on the conditions of use, and incandescent light bulbs at 1,000 to 2,000 hours. Demonstrations have shown that reduced maintenance, bulb life, and energy savings, are the primary factors in determining the payback period for an LED product.

 
Shock resistance:

LEDs, being solid-state components, are difficult to damage with external shock, unlike fluorescent and incandescent bulbs, which are fragile.

 
Focus:

LED produce focused light where as incandescent and fluorescent sources often require an external reflector to collect light and direct it in a usable manner