Method of Manufacturing Synthetic Resin Lens, Method of Manufacturing Reformed Synthetic Resin Material and Optical Pickup Apparatus

摘要

A method of manufacturing a synthetic resin lens, comprising: adjusting a degree of change in transmittance of a lens member made of synthetic resin for a blue violet laser beam with accumulated application of the blue violet laser beam, by applying to the lens member an electromagnetic wave shorter in wavelength than the blue violet laser beam.