We introduce a negative lens which will diverge the rays a bit . 我们用一块负透镜,它将使光线发散一些。
2.
We analyze the positive and negative lens effect caused by the hole theoretically and give the expression of normalized transmittance in this condition 本文从理论上分析了因孔洞而产生的正透镜或负透镜效应并给出了归一化透过率的表达式。