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The new high-definition optical lens includes a lens group, a second lens group, a diaphragm, a filter, a lens barrel, and a pressure ring; the first lens group has negative refractive power, including the first lens, the second lens, and the third lens, and All are meniscus lenses with negative refractive power and convex surface facing the object surface; the second lens group has positive refractive power, including No. 4 lens, No. 5 lens, No. 6 lens, No. 7 lens; No. 4 lens and No. 5 lens are both It is a biconvex lens with positive refractive power; the sixth lens and the seventh lens are both cemented lenses with positive refractive power; the rear surface of the sixth lens and the front surface of the seventh lens are mutually cemented; one lens group, two lens groups It is coaxially arranged between the object plane and the image plane from front to back;

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