Analytic calculation of the negative refraction at the sphericalsurface is conducted demonstrating that the usual optical formulas still hold true for the LHM lens.
推理分析了左手性介质透镜处球形界面的负折射规律，并依此表明了常用光学公式仍适用于左手性介质。
2
The optical path difference of two rays in the condition of near axis is discussed in the single sphericalsurface refraction.
本文讨论了单球形折射面在傍轴条件下二相邻光束的光程差问题。
3
The sorts of structures of optical elements includes structures of Fresnel's surface, cylindrical surface, spherical surface, aspheric surface, prism and trapezoid.