Abstract
Polishing equipment for high-surface-quality optical lens is a complex system, which requires expertise in various fields, such as precision machining, numerical control, manufacturing technology, precision metrology, and compensation control, all of which technologies represent the capability of a country in manufacturing and equipment development. This paper will analyze issues in high-precision lens polishing equipment from patent analysis and patent map. The trends in patent development and the technology strategy of major players in the world will also be discussed.