| 摘要 |
<p>An optical disc (1) for use as a compact disc, an optical video disc, or the like has a disc substrate (2) of a light-transmissive material such as polycarbonate, PMMA, or the like. The disc substrate (2) has a pattern (3) of pits and lands formed as representing an information signal on at least one surface thereof. A thin reflective layer (4) of a corrosion-resistant metallic material such as an alloy of Fe, Ni, and Co is deposited on the disc substrate over the pattern (3) of pits and lands. The optical disc (1) is relatively inexpensive to manufacture as no protective layer is deposited on the reflective layer (4) and is also highly resistant to aging because the reflective layer (4) is made of a corrosion-resistant metallic material. <IMAGE></p> |
