Megapixel large aperture vehicle-mounted forward-looking camera lens

The utility model relates to a megapixel large aperture vehicle-mounted forward-looking camera lens, comprising a front lens group with negative power, an aperture slot and a rear lens group with positive power, which are sequentially arranged from an object space; the front lens group is composed of a first lens with negative power and a second lens positive power, and the rear lens group is composed of a third lens, a fifth lens and a sixth lens, which are provided with the positive power, and a fourth lens with the negative power; The camera lens can realize large relative aperture, high imaging definition and small lens outer diameter, is beneficial to controlling the total length of a whole optical system, can effectively correct various optical aberrations and achieve the requirements of high definition with more than megapixel, and is particularly suitable for day and night monitoring or the monitoring under severe conditions and vehicle-mounted camera systems.