Ultra-wide-angle high-definition optical lens

The invention, which belongs to the optical imaging field, discloses an ultra-wide-angle high-definition optical lens comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The lenses are arranged coaxially in sequence form an object space to an image space. The first lens is a convex-concave lens having a positive diopter and the convex surface faces the object space; the second lens is a convex-concave lens having a positive diopter and the convex surface faces the object space; the third lens is a convex-concave lens having a positive diopter and the convex surface faces the object space; the fourth lens is a biconvex lens having a positive diopter and the convex surfaces face the object space; the fifth lens is a concave-convex lens having a negative diopter and the concave surface faces the object space; and the sixth lens is a plane-convex lens having a positive diopter and the convex surfaces face the object space. The rear surface of the fourth lens and the front surface of the fifth lens are bonded with each other. Compared with the prior art, the ultra-wide-angle high-definition optical lens has the following beneficial effects: wide-angle shooting with the maximum horizontal field angle theta of 160 degree for horizontal shooting and the diagonal angle of 200 degrees can be realized; and the optical lens structure is simple and the compact, so that the production cost of the optical lens can be reduced well.