小半径柱面镜光学加工工艺研究

Optical processing technique of small-radius cylindrical lens

针对某新型导弹激光系统提出的小半径柱面镜,通过对传统柱面镜加工方法的综合分析比较,选择合适的加工方法、用不同抛光模层进行抛光比较,对多种分离器材料和分离器槽的长短、模具的摆动幅度等进行工艺试验,使小圆棒柱面镜的表面粗糙度最小值达到Ra 0.005μm,优于设计图纸表面粗糙度Ra 0.01μm的要求,后续再磨去多余的半个圆柱,形成并达到平面的技术要求,满足了此半圆柱状的小半径柱面镜全部技术条件,形成稳定批产加工能力。

Aiming at the small-radius cylindrical lens proposed in a new infrared missile laser system,the traditional processing methods of cylindrical lens were analyzed comprehensively,the small-radius cylindrical lens was polished with selected processing techique and different polisher layers,and the results were compared.The process tests were carried out with several types of separator materials,seperators and different swing scopes.The minmun suface roughness of small-radius cylindrical lens achieved Ra 0.005 μm,which was superior to the requirement of design drawing for Ra 0.01 μm.Then the redundant half cylindrical lens was grinded off in order to meet the plane technical requirment.Finally all the technical specifications of small-raduis semi-cylindrical lens were satified,and the batch processing could be realized.