Edited by Chris

Each car will be equipped with headlights, but the lack of brightness and range of the original lights is still a common problem; The main reason for this is that manufacturers are subject to the cost demand of vehicles, and partly because of the legal requirements involved.
                                                                                                                                     Halogen headlights                                                             
                                                               
                                                                                                                                             LED headlights

The off-road environment is an activity with extremely high requirements for lighting, especially in some special terrain, such as Gobi or grassland. If the lighting lumen is not enough, it is difficult to see all kinds of water gullies and small fault ridges, and the desert is even more difficult. It is difficult to drive without sufficient intensity, width and range of lighting, This is why it is common for off-road vehicles to retrofit auxiliary lights.


Types of lights that can be modified for off-road vehicles

There are many types of lights that off-road vehicles can choose from. From the light source, there are lasers, LEDs, xenon, halogen, etc.

At the initial stage of off-road lamp refitting, only some truck lamps and tractor lamps were used as the selection sources of auxiliary lamps. At that time, most of the options for auxiliary lamp refitting were limited to halogen light sources, because xenon lamps were still too expensive at that time, so the brightness of auxiliary lamps was mainly determined by power, light bowl coating process and quality, Now, because there are many kinds of light sources, the type of light source has also become an important factor to determine the irradiation effect of auxiliarylamps.

Three factors that determine the effect of auxiliary lamp: power, size and coating quality

There is no need to distinguish the order of these, "cause" is different, "result" is different. On the premise of the same type of light source and coating, power is the prerequisite to determine the brightness, but the power can not be increased indefinitely. The headlamp is a configuration that consumes a lot of power on the car. The power of automobile generator, the thickness of wire and the conductivity of relay are limited, so we can't blindly rely on power to improve brightness.

In addition, it is meaningless to increase the brightness excessively. For example, it is useless for you to turn on 10000 auxiliary lights under sunlight intensity, because the intensity and brightness of sunlight have reached the saturation of your eyes, so it is meaningless to add more spotlights. If there is a lot of floating dust in the air in your area, too bright auxiliary lights will bring very serious diffraction reflection, and the light column emitted by the auxiliary lights will seriously interfere with your observation effect, causing you to be more unable to see the road conditions.


Importance and difference of auxiliary lamp coating

In addition to the diameter of the light reflecting bowl and the characteristic - power of the illuminant, the material of the lamp surface coating is also a very important part to determine the brightness of the auxiliary lamp; The reflection efficiency of chrome plating, aluminum plating or anything else is different, so the illumination effect of headlights with the same size may be completely different. In addition, the quality of coating also directly determines the service effect and service life of headlights.

The coating with poor quality is easy to blacken, which will lead to low reflection efficiency of headlights and decline of irradiation effect. The blackened coating will lead to the next vicious cycle until the coating finally peels off and falls off.

Difference and influence of color temperature

When selecting the color temperature of auxiliary lamp, try to consider about 4300-6500k. If it is not in this range, it is easy to produce "dyeing effect" regardless of the color temperature; For example, the light above 6500K is white and blue. When this light encounters other color temperature lights, such as yellow street lights, your light color will be "dyed" and change color, thus losing its due lighting effect. At the same time, when the high color temperature meets the dusty environment in the field, the light will easily cause strong reflection when it shines on the dust, thus affecting the line of sight and observation effect.

If the color temperature is low,  the color of all objects illuminated by it will become 3000K, and this color temperature is not the color temperature of sunlight, that is, we can distinguish the color temperature of the "real color" of the object - this will seriously reduce the visibility of the object, because the illuminated object has been "dyed", It's easy to lose sight of the shape and characteristics of the object after a little longer, and it will accelerate the process of eye fatigue.

Therefore, we must pay attention to the above two points when selecting the color temperature of auxiliary lamps. They usually cause many problems inadvertently, which may affect driving safety. Therefore, we must pay more attention.

(to be continued)