The optical characteristics of the magnetic metamaterial ( MM) composed of the ferrite rods are theoretically investigated.Firstly,a photonic band-gap (PBG)
The resolution of astronomical imaging from large optical telescopes is usually limited by the blurring effects of refractive index fluctuations in the Eart
Due to the special properties of asphere lens.the testing of it is more difficult than that of spherical lens.In this paper,the development of a new method