Aspheric optical lens is a key optical component used in infrared optical system for . transmission, refraction and incident light. The application prospect in the field of modern national defense science and technology and civil industrial products is promising. At the same time, a large number of aspheric infrared optical lenses are used. The processing precision and machining materials of aspheric infrared optical lens are proposed. The surface quality and precision are higher and higher. To ensure the accuracy of the surface profile of the aspheric infrared optical lens. In the grinding process, the grinding wheel center should be aligned as far as possible with the axisymmetric turning center of the rotary surface part. There are many cutting edges on the surface of the grinding wheel in the grinding process. It is often difficult to determine the precise position of the grinding point for a knife. The inaccuracy of the knife will result in the error of the knife. It is a difficult problem to make the precision of the knife in the aspheric grinding process. To improve the accuracy of the knife, in this paper, the influence of X-axis on the surface profde accuracy of aspheric surface infrared optical lens is analysed. This paper proposes a method to compensate the error of the knife caused by the axis of the X-axis. The accuracy of surface profile of aspheric surface infrared optical lens is improved. The results show that the error of X-axis is corrected by polka dot method. The surface profile accuracy of the aspheric surface infrared optical lens was 382nm before the adjustment. The surface profile accuracy of the aspheric surface infrared optical lens is 145nm after the adjustment of the knife. It has obviously improved.
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