Basic Research into Metal Mold Machining of Picking Up Lens

Abstract

As for the picking up lens for the optical disk, making to high accuracy according to making to a large capacity is requested. And making to high performance and the optical system compact is requested because of reduction in costs. Therefore, severe shape accuracy and complex shape in addition to roughing the surface are needed for the metal mold for mass production. Because we made two or more lens metal molds as a basic research by various shape, the condition, and the processing method with a superprecision processing machine, it reports on this part.