Information on LED Technology

This section is aimed at providing information on Light Emitting Diode (LED) Technology. The browse this page to discover the benefits of LED lighting and compare to other technologies in the market today. You'll be amazed at how fast the LED lighting industry has progressed.

Question & Answers

You can browse our Questions & Answers page to find answers to your usual questions.

Definitions and Terms

Term

Definition

Units

How to interpret

Color Temperature

Color of light

Kelvin (K)

Sunlight at sunrise is 1800K
100W Incandescent light bulb is 2850K
Overcast Sky is 6500K

Color Rendering Index (CRI)

Light’s effect on color

Scale of 0 to 100 with sunlight at 100

The higher the number, the more “true” the color will look in that light

Brightness

The intensity of the light.

Lumens

The higher the lumens, the brighter the light

Power

Amount of electrical energy consumed

Watts

Lower the watts, the lower the energy consumed

Efficacy

The efficiency of the bulb to convert electricity into light

Lumens per Watt

More efficient bulbs provide more light using less energy

Benefits/Costs
LED lamps have many advantages over traditional lighting methods.   These include:

  • Low energy consumption – retrofit bulbs range from 0.83 to 7.3 Watts
  • Long service life – LED bulbs can last up to 75,000+ hours
  • Durable – LED bulbs are resistant to thermal and vibrational shocks and turn on instantly from -40C° to 185C°, making them ideal for applications subject to frequent on-off cycling, such as garages and basements
  • Directional distribution of light – good for interior task lighting
  • No infrared or ultraviolet radiation – excellent for outdoor use because UV light attracts bugs
  • Safety and environmentally conscious – LEDs contain no mercury and remain cool to the touch
  • Fully dimmable – LEDs do not change their color tint when dimmed unlike incandescent lamps that turn yellow
  • No frequency interference – no ballast to interfere with radio and television signals
  • Range of color – LEDs can be manufactured produce all colors of the spectrum without filters, they can also produce white light in a variety of color temperatures

Other Useful Links

Here are a few links where you can go find additional information on LED lighting, industry standards, and other considerations:

U.S. Department of Energy (DOE)

Wikipedia - LED

How Stuff Works - LED