Based on the computer controlling method

the polishing technology and pertinent researches for small aspheric lens were studied. The material removing function of computer-controlled polishing tool was simulated with computer at length. Then

according to the simulating results

polishing correction was accomplished after adjusting the function of tool resident time. Finally

a 70 mm aspheric lens was polished on our self-made and computer-controlled polishing machine with three universal driving shafts.Experimental results show that the polishing technology has higher efficiency and precision. The precision of profile measurement is 0.45 μm and the precision of surface roughness is 2.687 nm. Furthermore

a high repeatable accuracy is obtained also. The results also indicate that the polishing technology can improve remarkably the batch-quantity manufacturing efficiency of small aspheric lens.