"Different types of Headlights used in cars"
The 3 Types of Headlights
1. Halogen
· Halogen hedlamp are an improvement of incandescent lights (sealed beam lights). Incandescent lights are still used for classic cars. With that said, Halogens have truly taken over as the standard in most vehicles.
· There are five halogens, however, only two are used in halogen headlights: Iodine and Bromine. Halogens are monovalent elements and they readily form negative ions. Halogen lights use a combination of iodide and bromine gases that prevent the tungsten filament from breaking. They also prevent suit formation (blackening) inside the bulb.
·
Halogen lights produce
a lot of heat as electricity flows through the filament and lights up the bulb.
The heat production makes handling these bulbs quite difficult. Even small
amounts of moisture from your skin can diminish how they perform
Ø
Costs of manufacturing
are relatively low. Meaning the bulbs are cheap compared to other options.
Ø
Color temperature is
usually around 3000K resulting in a yellow hue.
Ø
Lumen output is fairly
low (about 1500). Meaning downroad visibility is sacrificed.
2. Xenon, HID, Arc
· Xenon or high-intensity discharge (HID) lights
don’t use a metal filament to create light. These lights create a high voltage
arc between two electrodes. You can think of this like a controlled bolt of
lightning happening inside a small tube.
· The HID bulb is filled with xenon gas. As the
xenon gas ignites it produces a bright white/bluish light. This process creates
far less heat in comparison to halogen. However, in order for the lights to
come to full brightness, they need time to warm up. Once they are warmed up
they are quite bright. Some countries have even deemed these lights too bright
and aren’t permitted to be used.
Ø Produces brighter light. Around 3,000 lumens.
Ø A lifetime of around 2,000 hours.
Ø Can be too bright and can irritate oncoming
drivers due to the combination of 5,000K to 8000K color temperature and lumen
rating.
Ø Can take a bit to warm up.
Ø Can be expensive.
3.LED
·
LEDs or light emitting
diodes are popular in newer cars. Retrofitting LED headlights is also
very easy and the upgrade only takes 30 minutes.
·
These lights work by
converting electricity into light through diodes inside the headlight; the
process is known as electroluminescence. This process is also more energy
efficient compared to halogen as little to no heat is created. This means that
the lights are able to last a lot longer.
·
LED headlights are
going to be a bit more expensive. They also last longer and the intensity of
their light is stronger. This means your downroad visibility is improved and
you’re safer on the road. The light is also tolerable for other drivers.
Ø Easy to retrofit
Ø Brighter than halogen and can range from 4,000
to 12,000 lumens
Ø Energy efficient
Ø Slight blue hue of 6,000K temperature.
Ø A bit more expensive than halogen.
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