本文采用硅柱子周期性排列构成六角结构光子晶体,用平面波展开方法和FDTD方法研究表明,此结构光子晶体存在等效折射率接近-1的频率区域.在等效折射率趋于-1但不等于-1时,此光子晶体平板结构超透镜能形成一个非近场的像.模拟还发现,此结构平板光子晶体等效折射率为非-1时,可以亚波长成像. In this paper, the hexagonal structured photonic crystals are periodically arranged by silicon pillars. The plane wave expansion method and the FDTD method show that the equivalent photorefractive crystal has an equivalent refractive index close to -1. When the equivalent refractive index tends to -1 but not When it equals to -1, this photonic crystal plate structure super lens can form a non-near-field image.It is also found that the sub-wavelength image can be formed when the equivalent refractive index of this structure plate photonic crystal is non-1.