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    • 4. 发明申请
    • DUAL-STACK OPTICAL DATA STORAGE MEDIUM FOR WRITE ONCE RECORDING
    • 用于写一次记录的双层光数据存储介质
    • WO2005036536A2
    • 2005-04-21
    • PCT/IB2004/051994
    • 2004-10-06
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.MARTENS, Hubert, C., F.TIEKE, BennoWOERLEE, Pierre, H.VAN DEN OETELAAR, Ronald, J., A.KOPPERS, Wilhelmus, R.
    • MARTENS, Hubert, C., F.TIEKE, BennoWOERLEE, Pierre, H.VAN DEN OETELAAR, Ronald, J., A.KOPPERS, Wilhelmus, R.
    • G11B7/00
    • G11B7/24038
    • A dual-stack optical data storage medium (10) for write-once recording using a focused radiation beam (9) having a wavelength λ of approximately 655 nm is described. The radiation beam enters through an entrance face (8) of the medium (10) during recording. The medium comprises at least one substrate (1, 7) with present on a side thereof:­ a first recording stack (6), named L0, comprising a write-once type L0 recording layer, said first recording stack L0 having an optical reflection value R L0 and an optical transmission value T L0 , a second recording stack (3), named L1, comprising a write-once type L1 recording layer, said second recording stack L1 having an effective optical reflection value R Lleff . The first recording stack (6) is present at a position closer to the entrance face (8) than the second recording stack. (3). A transparent spacer layer (4) is sandwiched between the recording stacks (3, 6). The reflection values R L0 and R L1 eff are within the following ranges: 0.12 ≤ R L0 ≤ 0.18 and 0.12≤ R L1eff ≤ 0.18 by which an improved sensitivity of the dual stack medium is achieved.
    • 描述了使用具有大约655nm的波长λ的聚焦辐射束(9)进行一次写入记录的双层光学数据存储介质(10)。 在记录期间,辐射束通过介质(10)的入射面(8)进入。 所述介质包括至少一个其一侧的基板(1,7);一个名为L0的第一记录堆叠(6),包括一次写入式L0记录层,所述第一记录堆叠L0具有光学反射值 RL0和光传输值TL0,称为L1的第二记录堆叠(3),包括一次写入型L1记录层,所述第二记录堆叠L1具有有效光反射值RLleff。 第一记录堆叠(6)存在于比第二记录堆叠更靠近入口面(8)的位置。 (3)。 透明间隔层(4)夹在记录叠层(3,6)之间。 反射值RL0和RL1 eff在以下范围内:0.12 <= RL0 <= 0.18和0.12 <= RL1eff <= 0.18,由此获得双堆叠介质的改进的灵敏度。