公开(公告)号：EP0918323A2

公开(公告)日：1999-05-26

申请号：EP98120847.3

申请日：1998-11-03

申请人： Sharp Kabushiki Kaisha

发明人： Mori, Go ,  Mieda, Michinobu ,  Iketani, Naoyasu ,  Suzuki, Ippei ,  Murakami, Yoshiteru ,  Takahashi, Akira

IPC分类号： G11B7/24

CPC分类号： G11B7/252 ,  G11B7/24056 ,  G11B7/24067 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/2578 ,  G11B11/10584 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/2571 ,  G11B2007/25713 ,  G11B2007/25715 ,  G11B2007/25718

摘要： An optical disk of the present invention includes a transparent dielectric film formed on a light incident side of the disk on an opposite side of an optical recording film so as to sandwich the transparent substrate therebetween, for suppressing bimetallic effects caused by a difference in thermal expansion between an optical recording film formed on an optical recording surface and the transparent substrate, whereby changes in tilt against temperature changes can be suppressed. Further, by an optimal selection of a reflectance of the transparent dielectric film, unwanted reflection due to multi-interference can be reduced at the same time.

摘要翻译： 本发明的光盘包括在光记录膜的相反侧的光盘入射侧形成的透明电介质膜，以将透明基板夹在其间，用于抑制由热膨胀差引起的双金属效应 在形成在光学记录表面上的光学记录膜与透明基板之间，由此可以抑制倾斜温度变化的变化。 此外，通过对透明电介质膜的反射率的最佳选择，可以同时减少由于多次干涉引起的不期望的反射。

公开(公告)号：EP0918323A3

公开(公告)日：2000-08-30

申请号：EP98120847.3

申请日：1998-11-03

申请人： Sharp Kabushiki Kaisha

发明人： Mori, Go ,  Mieda, Michinobu ,  Iketani, Naoyasu ,  Suzuki, Ippei ,  Murakami, Yoshiteru ,  Takahashi, Akira

IPC分类号： G11B7/24

CPC分类号： G11B7/252 ,  G11B7/24056 ,  G11B7/24067 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/2578 ,  G11B11/10584 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/2571 ,  G11B2007/25713 ,  G11B2007/25715 ,  G11B2007/25718

摘要： An optical disk of the present invention includes a transparent dielectric film formed on a light incident side of the disk on an opposite side of an optical recording film so as to sandwich the transparent substrate therebetween, for suppressing bimetallic effects caused by a difference in thermal expansion between an optical recording film formed on an optical recording surface and the transparent substrate, whereby changes in tilt against temperature changes can be suppressed. Further, by an optimal selection of a reflectance of the transparent dielectric film, unwanted reflection due to multi-interference can be reduced at the same time.

摘要翻译： 本发明的光盘在光盘的与光学记录膜相反一侧的光入射侧上形成透明介质膜，以将透明衬底夹在中间，用于抑制由热膨胀差异引起的双金属效应 在光学记录表面上形成的光学记录膜与透明基板之间，由此可以抑制对温度变化的倾斜的变化。 此外，通过对透明介电膜的反射率的最佳选择，可以同时减少由于多重干涉引起的不希望的反射。