Families of Bulbs

1 – Incandescent Lamps

These lamps are very efficient. They have a luminous efficiency of between 12 and 20 lm/W. They produce 95 percent heat and 5 percent light and have classified between E and G. The maximum powers for this type of bulb are 150 W. These should normally disappear for 2013.

2 – Halogen Lamps

They have a slightly better performance than incandescent lamps. They have a luminous efficiency of between 15 and 25 lm/W. They consume about 30% less energy to equivalent power, however they often have higher powers.

3 – The Fluorescent Tubes

The fluorescent tube is especially recommended in the service sector. It has a luminous efficiency of 65lm/W. However, their light is pale, color temperatures usually range from 3000K to 4000K. The life expectancy of the tubes ranges from 12000H to 18000H.

4 – CFL

They have a very good performance with a luminous efficiency of between 60 and 100 lm /W and their life expectancy is 10 times greater than conventional bulbs. However their rise is much longer than for a normal bulb. They have a built-in electronic ballast. They can take many forms:

-Classic bulb shape: they adapt well in changing the bulbs incandescent

-Helical form: they have better light efficiency

5 – LED Lamps

To make an LED bulb you need several light-emitting diodes in a traditional bulb, says Lawfaqs.net. These diodes are composed of materials (aluminium nitride and gallium phosphorure) semiconductors. Their luminous efficiency is very low and demand has to be increased. However it suits perfectly for extra lighting and outdoor lighting. Unlike CFLs, they light up instantly.