会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明公开
    • OPTICAL RECORDING MEDIUM
    • 光学记录介质
    • EP2447945A1
    • 2012-05-02
    • EP10792073.8
    • 2010-06-21
    • Mitsubishi Kagaku Media Co., Ltd.
    • OHNO, TakahiNODA, Yoshihiro
    • G11B7/24G11B7/243G11B7/254G11B7/257
    • G11B7/2578G11B7/24038G11B7/2548G11B2007/24312G11B2007/24314G11B2007/24316
    • To provide an optical recording medium which is a multilayer type optical recording medium and of which recording/reproducing functional layers other than the outer most recording/reproducing functional layer from the incidence side of laser light are excellent in the uniformity in the reflectivity, the durability, the signal intensity, etc.
      An optical recording medium having a translucent recording/reproducing functional layer which comprises at least a first protective layer, a second protective layer, a recording layer, a third protective layer, a reflective layer and a fourth protective layer in this order from the incidence side of laser light, wherein the second protective layer and the fourth protective layer are made of a material having the same constituting elements, wherein the refractive index of the second protective layer is higher by at least 0.3 than the refractive index of the first protective layer, and wherein, when the film thickness of the second protective layer is set as D2, the film thickness of the fourth protective layer is set as D4, and the reflectivity before recording when the laser light is focused on the recoding layer is set as R, the positive and negative of increasing rates d(R)/d(D2) and d(R)/d(D4) relative to the film thickness of R are inverse.
    • 为了提供一种作为多层型光记录介质并且从激光的入射侧记录/再现除最外层记录/再现功能层之外的功能层的光记录介质在反射率均匀性方面优异, ,信号强度等。1.一种具有半透明记录/再现功能层的光学记录介质,其至少包括第一保护层,第二保护层,记录层,第三保护层,反射层和第四保护层 以从激光的入射侧开始的顺序,其中第二保护层和第四保护层由具有相同构成元件的材料制成,其中第二保护层的折射率比折射率高至少0.3 第一保护层的指数,并且其中,当第二保护层的膜厚度为i时, s设定为D2时,第四保护层的膜厚设定为D4,并且当激光聚焦在记录层上时记录之前的反射率设定为R,增加率d(R)/ d(D2)和d(R)/ d(D4)相对于R的膜厚是相反的。