Wide-angle optical lens

The invention relates to the technical field of vehicle-mounted lenses, in particular to a wide-angle optical lens which comprises an optical imaging lens group and a system diaphragm, and the optical imaging lens group is sequentially provided with a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and an optical filter from the object space to the image space along an optical axis; the system diaphragm is positioned between the third lens and the fourth lens; the first lens has negative focal power, the second lens has negative focal power, the third lens has positive focal power, the fourth lens has negative focal power, the fifth lens has positive focal power, and the sixth lens has positive focal power. The total lens length TTL of the wide-angle lens structure is less than or equal to 17mm. According to the invention, the design is ingenious, the small optical lens with high pixel, large target surface and small volume is realized, and a glass-plastic mixed structure is