Ultra Precision Cutting of Roll Die with Micro Lens Array for Plastic Film

Patterning vast numbers of micro lenses on a surface increases technical importance to improve characteristics of optical parts such as liquid crystal displays. A cutting method using a diamond bite is examined to make a molding die by which array patterns of many micro lenses are molded. Realizing the cutting procedure, the developed machining system employs a cutting unit actuated by PZT and a synchronous control system of the cutting unit with a NC controller. Through experiments using this developed system, it is confirmed that machining a lot of micro lenses on a molding die with high precision is possible. And we confirmed that a high-speed cutting of micro lens array for roll die which is used for manufacturing plastic films is possible.