What does the lens look like?

Lenses are optical elements made of transparent materials (such as glass, crystal, etc.). The lens is a refracting mirror, and its refracting surface is the transparent body of two spheres (partial spheres) or one sphere (partial spheres) and a plane. There are real images and virtual images.

Convex lens: thick in the middle, thin in the edge, biconvex, plano-convex and concave-convex;

Concave lens: the center is thin and the side is thick, and there are three types: double concave, flat concave and convex concave.

Automobile lenses are generally installed in headlights, which are common in low-beam lenses. Headlights with lenses can see obvious changes when switching between far and near light.

First of all, the lens can reflect the scattered light to form a parallel beam, which greatly enhances the brightness of light and makes the illumination far and bright. At the same time, the beam is concentrated, which is unlikely to affect the sight of other cars and passers-by.

Secondly, the power of the bulb with lens can be smaller, which can save energy. Compared with traditional lamps, lamps with lenses can see obvious changes when switching between far and near light, which can solve the problem of astigmatism well, with more uniform brightness and stronger penetration. Million car purchase subsidy