Optical System

Lens Optic
A light source is placed at or near the focus of a reflector, which may be parabolic or non parabolic. Which the lens help to spread the light.

Parabolic
A circular conical surface and plane parallel to a generating straight line of the surface.

Reflector
A distribution of light from the bulb to optic lens and in the road. There are made of metal and glass.

Dual reflector
A reflector that design to use Low Beam or High Beam

Types of bulb size

• H1
• H2
  
• H3
• H4
• H7
• H8
• H9
• HB3
• HB4
• 501
• 233
• 207
• 286
• 9003
• 9004

Kinds of Light Source

• Tungsten light source
• Tungsten halogen light source
• Halogen
• HID
• LED

Tungsten Light Source
The first electric headlamp light source. it operates in a vacuum or inert gas atmosphere inside the headlamp bulb or seal beam.

Tungsten Halogen Light Source
Halogen technology which give more light than the tungsten.

Halogen
Is an incandescent lamp in which a tungsten filament is sealed into a compact transparent envelope with an inert gas and have a small amount of halogen such as iodine or bromine.

HID Light source
HID means High Intensity Discharge, the technical term for the electric arc that produces the light, HID are commonly called Xenon Head Lamps. The xenon gas allows the lamps to produce minimal adequate amounts of light immediately upon start up and speed the warm up time, This kind of bulb do not use on low voltage DC current so they are required to have ballast. The ballast control the current of the bulb, after the ballast start the DC flowing in the bulb is up to 85V

LED
Are being used in parking lamps, brake lamps, and turn signal. LED are under development since 2004