Vehicle-mounted lens and imaging device

The invention relates to the field of optics, in particular to a vehicle-mounted lens and an imaging device. The vehicle-mounted lens sequentially comprises a first lens with negative focal power, a second lens with positive focal power, a diaphragm, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with positive focal power and a sixth lens with positive focal power from an object plane side to an image plane side, the vehicle-mounted lens satisfies the following conditional expressions: phi 1/f is less than 4.5; the FOV is greater than 110 degrees; wherein phi1 is the outer diameter of the first lens, f is the focal length of the vehicle-mounted lens, and FOV is the field angle of the vehicle-mounted lens. According to the vehicle-mounted lens provided by the utility model, under the condition that the outer diameter of the first lens is relatively small, a relatively large field angle is realized, the requirement of the large field angle of the vehicle-mounted le