| 摘要 |
<p>An optical disc (100) with multiple annular stacked rings, comprising: a circular opening part (3) formed in the centre of the optical disc (100); an annular recording part (5) used for recording information; an annular supporting part (7) located between the circular opening part (3) and the annular recording part (5) and used for supporting the optical disc (100), wherein at a reading side of the optical disc (100), the annular recording part (5) and the annular supporting part (7) are located in the same plane; and an annular reinforcing part (11) formed at the reading side of the optical disc and located between the annular supporting part (7) and the annular recording part (5), wherein the annular reinforcing part (11) has more than two annular stacked rings (13a, 13b) which are higher than the annular supporting part (7) and the annular recording part (5), and such annular stacked rings (13a, 13b) are arranged at intervals in the radial direction of the optical disc.</p> |
