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    • 10. 发明授权
    • Optical information recording medium
    • 光信息记录介质
    • US07251212B2
    • 2007-07-31
    • US11410853
    • 2006-04-26
    • Yuki NakamuraTohru YashiroTatsuo Mikami
    • Yuki NakamuraTohru YashiroTatsuo Mikami
    • G11B7/24B32B3/02
    • G11B7/246G11B7/2463G11B7/2467G11B7/2472G11B7/248G11B7/249G11B7/2531G11B7/2533G11B7/2534G11B7/2535G11B7/2578G11B7/259G11B2007/25706G11B2007/25708G11B2007/2571G11B2007/25711G11B2007/25713G11B2007/25715G11B2007/25716G11B2007/25718Y10T428/21
    • An optical information recording medium containing a first information substrate including a first substrate having a guide groove thereon, a first recording layer including a dye, overlying the first substrate and a first reflective layer being a semi-transmittance layer, overlying the first recording layer, a second information substrate comprising, a second substrate having a guide groove thereon, a second recording layer comprising a dye, overlying the second substrate, a second reflective layer being a semi-transmittance layer, located overlying the second recording layer and a light transmittance protective layer overlying the second reflective layer and a transparent intermediate layer. Further, the following relationships (1) and (2) are satisfied: (1) 0.3≦nd/λ≦0.7, wherein n represents refractive index in the complex refractive index n-ik of the light transmittance protective layer, d represents a thickness thereof, and λ is at least one of a recording wavelength and a playback wavelength, (2) k≦0.05, wherein k represents absorption index of the light transmittance protective layer of the complex refractive index n-ik.
    • 一种光学信息记录介质,包括第一信息基板,包括在其上具有引导槽的第一基板,覆盖在第一基板上的染料的第一记录层和覆盖在第一记录层上的半透射层的第一反射层, 第二信息基板,包括:第二基板,其上具有引导槽;第二记录层,包括染料,覆盖在所述第二基板上,第二反射层是半透射层,位于所述第二记录层的上方;以及透光保护层 覆盖第二反射层的层和透明中间层。 此外,满足以下关系式(1)和(2):(1)0.3 <= nd /λ<= 0.7,其中n表示光透射保护层的复折射率n-ik中的折射率,d表示 其厚度和λ是记录波长和重放波长中的至少一个,(2)k <= 0.05,其中k表示复合折射率n-ik的透光率保护层的吸收指数。