The headlights provide comfort and safety for the driver while driving. They differ in the type of lamps used, the quality of the light emitted. It is impossible to drive safely without headlights, and it is often the headlights that fail and require quick replacement.
The headlights are practically identical in design for all car models. The distribution of the luminous flux is provided by three elements. The primary source of light is a light bulb. It distributes light around its axis. Then the light rays are directed to the reflector. This element is a conical shape made of glass or plastic with an aluminum coating. The diffuser is the third element. It directs the light flux to the desired point.
Only the design of the reflector can differ. It can be parabolic, reflector or lens.
The parabolic reflector is the simplest. This form provides for a static distribution of light beams without the possibility of adjustment.
The reflector is also a static system without the function of correcting the radial flux of light. The difference from the parabolic one is that the reflector itself is distributed into many separate zones. They help to more accurately separate the streams of light. This allows for clearer lighting. Headlights with such a reflector blind oncoming drivers less.
A reflector with a lens assumes a system of double refraction of the light flux. Such a system is the most efficient and secure. Among the disadvantages: it is more difficult to maintain, and in case of failure, you will have to spend a lot of money on repair or replacement.
If you want good and at the same time not very expensive headlights, you should pay attention to the models with a reflector-reflector - the best value for money.