对各种LED光源和光学会聚系统进行了对比测试，并对其聚光性能进行了分析，设计了一种全内反射透镜（TIR透镜）结构。
This paper comparably tests different LED light source and optical convergence system, analyzes the condensing performance and designs the structure of TIR lens.
结果表明，该结构具有源于全内反射的光子带隙。
The results show that the structure possesses a type of photonic band gap originating from total internal reflection (TIR).
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