Why Can't High Beams Be Equipped with Lenses?

[DeManuel]

The reasons why high beams are not equipped with lenses are as follows: 1. Generally, when retrofitting xenon lights with lenses, it is the low beams that are modified, not the high beams. This is to prevent the high beams from being focused, allowing the light to scatter and illuminate farther and wider. High beams are mainly used to supplement the dark areas not covered by low beams. If lenses were installed on high beams, the light would be focused directly on distant areas, resulting in a straight beam that only illuminates the far road surface while making it difficult to see the nearby road surface. Additionally, the straight beam would obscure overhead road signs, affecting driving. After retrofitting xenon lights for high beams, light scattering is a normal phenomenon due to the design of the high beam reflector. Therefore, to ensure proper illumination, lenses should not be added. 2. Xenon lights are brighter and more glaring, but their beams are more scattered, requiring lenses to focus the light. Without lenses, the scattered light from low beams would shine into the eyes of other drivers instead of the road, not only reducing illumination effectiveness but also posing a significant safety hazard by impairing the vision of other drivers.