Simple and easy-to-assemble high-definition athermalization television lens

According to a 1/3inch high-definition CMOS of a 1280 * 768 area array, an optical system applied to the 0.4-0.7 [mu] m wave band of a television is designed, the focal length is 16 mm, the F number is 3, and the television lens can work at the temperature ranging from-45 DEG C to 60 DEG C; the whole optical system is composed of three sets of doublet lenses in the light incidence direction, the first set of doublet lenses is negative in focal power, and the other two sets of doublet lenses are positive and all use common optical glass. The system achieves the purpose of reducing high-order aberration and achromatism through the doublet lens, thereby achieving high image quality. Meanwhile, due to the fact that only two intervals are arranged, high machining and assembling efficiency can be achieved. 本发明公开了一种简洁易装配的高清无热化电视镜头，依据1280*768面阵的1/3inch高清CMOS，设计了应用于电视0.4-0.7μm波段的光学系统，焦距为16mm，F数为3，可工作于-45℃至60℃；整个光学系统沿光线入射方向由三组双胶合透镜构成，第一组光焦度为负，随后两组为正，均使用普通光学玻璃；系统通过双胶合透镜达到减小高阶像差及消色差的目的，从而达到高像质；同时因仅有两个间隔，可实现高的加工装配效率。