Large-view-field high-energy ultraviolet alarm optical lens

The utility model discloses a large-view-field high-energy ultraviolet alarm optical lens, which comprises a first convex-concave lens, a second convex-concave lens, an optical filter, a biconvex lens, a third convex-concave lens and a fourth convex-concave lens which are sequentially arranged, and the second convex-concave lens, the biconvex lens and the third convex-concave lens are all aspheric lenses. The utility model relates to the technical field of ultraviolet alarm optical lenses, adopts aspheric and binary diffractive optical elements, has a full field of view of 120 degrees and a relative aperture of 1/1.1, and can effectively reduce the number of lenses, reduce refraction, increase aspheric surfaces and improve light transmittance. Meanwhile, the energy concentration degree is improved through the large view field and the large aperture, the optical lens has the advantages of being large in relative aperture, large in view field, high in energy, high in transmittance, compact in structure and good