THE SMART TRICK OF UNCOOLED LWIR LENSES THAT NO ONE IS DISCUSSING

From the comparison of two aspects previously mentioned, it proves the freeform lens has benefits of aberration correction evaluating Together with the aspheric area, even in the applying of coaxial refractive optical system.This system is made of four lenses. Only one diffractive lens on L1 and one conical surface area on L2 are used to balance th