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    • 2. 发明授权
    • Optical recording medium
    • 光记录介质
    • US09007884B2
    • 2015-04-14
    • US14126996
    • 2012-06-29
    • Kensaku TakahashiTakeshi MikiJun Nakano
    • Kensaku TakahashiTakeshi MikiJun Nakano
    • G11B7/24G11B7/007G11B7/24079
    • G11B7/00718G11B7/24079G11B7/261
    • The present technology relates to an optical recording medium for realizing an optical recording medium capable of high-capacity recording. A groove and a land are formed, the groove being concave and the land being convex when seen from a side of a laser light incident surface, both of the groove and the land being recording tracks where recording or reproduction of information is performed. According to this recording layer, a pitch between the groove and the land that are adjacent recording tracks is within a range of 250 nm to 200 nm. Moreover, recording or reproduction of information is performed with respect to the recording tracks by irradiation of laser light whose wavelength is 400 nm to 415 nm by an optical system whose NA is 0.85±0.1.
    • 本技术涉及一种用于实现能够进行大容量记录的光记录介质的光记录介质。 在从激光入射面的侧面观察时,形成凹槽和凹槽,凹槽是凹凸的,凹槽和凸台是记录或再现信息的记录轨迹。 根据该记录层,与记录轨道相邻的槽与槽脊之间的间距在250nm〜200nm的范围内。 此外,通过用NA为0.85±0.1的光学系统照射波长为400nm〜415nm的激光,对记录轨道进行信息的记录或再现。