Research on the Precision Grinding Process of Sapphire Lens

Sapphire crystal material has a good transmittance and its infrared transmittance hardly changes with temperature. Therefore it is widely used in lasers, infrared technology, semiconductors, measuring instruments, defense and aerospace and many other areas. But there still have the problems of low productivity, easy scratching the surface and the surface quality of instability and others on the grinding process of sapphire lens. In order to solve these problems, its precision grinding process has been studied. Through using different performance and specifications of grinding tools, the experimental research was carried out in phases on the grinding process. Then the laser imaging device was used to detect surface quality, and data was theoretically analyzed and calculated and compared with experiment, last the grinding process parameters was optimized. At the end, the process methods and parameters which have important guiding significance for the production of the sapphire lens are summarized.