激光器为加工头供能所形成的环形聚焦光斑形态如图 a)所示,光斑呈现形态规则的圆环,图 b)为焦点分析仪测试生成的能量分布三维图,从图中白框可以看出离焦量为(F±3.5mm)范围内的环形光斑能量分布相对均匀。
The shape of the ring-shaped focused spot formed by the laser supplying energy to the processing head is shown in Figure a), and the spot shows a regular circular shape.