High-definition vehicle-mounted lens

The invention discloses a high-definition vehicle-mounted lens, which sequentially comprises a front lens group with positive focal power, an aperture diaphragm, a rear lens group with positive focal power and an optical filter from an object space to an image space, the front lens group comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with positive focal power; the rear lens group comprises a fifth lens with positive focal power, a sixth lens with positive focal power, a seventh lens with negative focal power and an eighth lens with positive focal power; and the sixth lens and the seventh lens form a balsaming lens group. The resolution ratio of the lens can reach eight million pixels, the MTF is higher than 35% at the position of 238lp/mm, the size of an image plane is about phi 9mm, accurate early warning can be carried out on obstacles appearing in front of a high-speed driving automobile, and the lens is su