With the gradual maturity of the headlight lens assembly technology, headlight lenses are no longer the patent of high-end luxury cars. At present, some mid-range family cars and even high-end versions of low-end models are equipped with lens headlights.
In fact, lens headlights are not a term for light sources, but a way of focusing light on a headlight. Before the emergence of lens headlights, the traditional headlights we saw were all bulbs, and then there was a glittering silver "bowl" around them, which is what we call a focusing cup, which gathered the divergent light into a fan-shaped light to illuminate the road ahead.
Lens headlights use a smaller and more compact small focusing cup to gather the light into a beam of parallel light, and then diverge it into a fan-shaped light through a convex lens.