| 摘要 |
PURPOSE:To protect the eyes of user, by providing a colored protective layer which can absorb at least a part of visual light. CONSTITUTION:Colored protective layers 11 and 16 which can absorb at least a part of visual light are provided. According to the wavelength of a laser light source used for optical discs, the protective layers 11 and 16 are made transparent at only the vicinity of the corresponding wavelengths. The provision of the colored protective layers 11 and 16 eliminates unnecessary regular reflection from an Al reflecting surface. |
