| 摘要 |
The invention relates to a storage medium for the storage and retrieval of information, comprising: a substrate (1), an active layer (2) for retention of data, the active layer employing bit-position encoding for the storage and retrieval of information, and a plurality of micro-optical elements (24, 24', ...) for receiving illumination from an external source of illumination. According to the invention, the micro-optical elements (24, 24', ...) are provided according to a pre-determined pattern of bit positions, preferably at each of the possible bit positions. Preferably, the micro-optical elements comprise lenses, preferably hemispherical or stigmatic lenses. The invention also relates to a method of manufacturing the storage medium. According to the invention, the storage medium has a relatively high data density. |
