Fecha de publicación: 12/05/2023 Fuente: WIPO "tobacco agriculture" The utility model relates to a high-resolution light-weight telephoto lens, which comprises an optical system, and the optical system is sequentially provided with a front lens group with positive focal power, an iris diaphragm, a rear lens group with positive focal power, a fixed lens group with positive focal power and an imaging surface from left to right along incident light. The front lens group is sequentially provided with a first positive meniscus lens, a second positive meniscus lens and a first negative meniscus lens which are closely connected to form a first gluing group; the rear lens group is sequentially provided with a second gluing group and a second biconvex lens, wherein the second gluing group is formed by tightly connecting a first biconcave lens and a first biconvex lens; and the fixed lens group is sequentially provided with a third gluing group which is formed by tightly connecting a second biconcave lens and a third biconvex lens. The lens still has high resolution when the object distance is 300mm, and the optical distortion is less than 0.1%; high-resolution imaging superior to 10 million pixels can be realized for a machine vision industrial detection system; the method can be applied to measurement, detection, identification, positioning and the like, and the application industries include the electronic manufacturing industry, automobiles, printing and packaging, tobacco, agriculture, medicine, textile, traffic and other fields.