There are light bulbs that are more efficient than incandescent bulbs and they are called halogen light bulbs.

1. Knowing the Difference
Between Halogen Light Bulbs
and Incandescent Lamps

2. There are light bulbs that are more efficient than
incandescent bulbs and they are called halogen light
bulbs. The latter provides greater energy efficiency,
glowing brighter with the same energy input as
incandescent bulbs. These kinds of lamp are found in
homes, offices, and automobiles. Their advantage over
regular lamps is that they last longer. In fact, they were
developed as an answer to the need for longer lasting
light bulbs. The length of their lifespan can be explained
by their durability and efficiency.

3. These bulbs have modified structures that are not quite
similar to other types of light bulbs. Sometimes such
specialized bulbs are called tungsten halogen bulbs
since the bulbs feature the basic tungsten filament, a key
component of incandescent lamps, and a halogen
element. The interaction between the metallic tungsten
and the halogen gas gives such lamps distinct
characteristics that no other kind of lamps can bestow.
The halogen element can be iodine, which together with
the tungsten filament is encapsulated in a small heat-resistant
glass bulb.

4. The presence of the halogen gas is the key element for the
length of lifespan of halogen lamps. When the tungsten
wire glows, some of the tungsten atoms vaporize which
is a common phenomenon in typical incandescent bulbs.
However, the presence of halogen prevents rapid
deterioration of the tungsten wire through re-deposition of
tungsten onto the filament. This process prolongs the life
of the wire filament, thereby, lengthening the life of the
bulb. The reason incandescent lamps run out of life is the
burning out of the thin tungsten filament. This process is
quite delayed in halogen bulbs.

5. Halogen bulbs can withstand higher temperatures, in which
conditions the similar incandescent bulbs can burst. Since
they can withstand extremely high temperatures, they can be
made much brighter than incandescent or fluorescent lamps.
With greater brightness, such lamps are more efficient for
specific purposes where other types of lamps shall be
impractical to use.
Another key factor of halogen-containing lamps is the type of
glass that encloses the tungsten-halogen complex. These
lamps withstand extreme heat because the glass
encapsulation is made of quartz instead of glass that is
commonly used on ordinary light bulbs. At the same
temperature that a halogen bulb withstands, an incandescent
lamp bursts.

6. Because of the features of these light bulbs, they are made
with utmost expertise. Not only should these bulbs be
able to resist very high filament temperature but also they
should be manufactured in such a way to reduce heat
dispersion. Another vital aspect during the manufacture
process is to ensure that the lamps' UV-B output is
reduced. In case you do not know, the fusion of quartz to
reinforce the glass bulb results in the emission of the
ultraviolet radiation.

7. So some companies apply additives to the glass to filter UV-B
radiation. The glass bulb may also be coated in multilayer
which allow emission of the full spectrum of visible light but
prevents escape of too much infrared radiation. Infrared
radiation is what you feel as the thermal energy coming out of
typical lamps. Such bulbs are made in such a way as to
reflect heat given off by the burning filament back to the
filament itself, a process that increases energy efficiency.
But these types of lamps are not suitable in all applications.
Halogen-containing bulbs are only used in automotive and
specialized applications wherein intense bright light is
necessary. However, there are different types of halogen
lamps that can be used for ordinary purposes such as in
home and office use.

8. Resources:
http://www.materialelectricoprecio.com
http://ezinearticles.com/?Knowing-the-
Difference-Between-Halogen-Light-Bulbs-and-
Incandescent-Lamps&id=4283886

9. Thanks for reading!

10. Thanks for reading!