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1. 发明授权

US07933189B2 Focus optical system and optical disc master exposure apparatus 有权
标题翻译：聚焦光学系统和光盘主曝光设备
公开(公告)号：US07933189B2
公开(公告)日：2011-04-26
申请号：US12423911
申请日：2009-04-15
申请人： Takeshi Omori , Takaaki Kassai , Kenji Maebara , Keiji Fujita , Hiroaki Ashiwa
发明人： Takeshi Omori , Takaaki Kassai , Kenji Maebara , Keiji Fujita , Hiroaki Ashiwa
IPC分类号： G11B7/00
CPC分类号： G11B7/0909 , G11B7/261
摘要： In a focus optical system for optical discs or optical disc master exposure apparatuses, a relative positional relation between a cylindrical lens and a 4-division detector in an astigmatic optical system is adjust so that an interference fringe appearing in reflected light derived from an optical disc master is made to be incident on a dead zone of the 4-division detector. Thus, an astigmatic focus servo free from effects of variations in a focus error signal due to the interference fringe is realized. As a result of this, effects of the interference fringe appearing in the reflected light derived from an optical disc or optical disc master can be suppressed.
摘要翻译：在用于光盘或光盘主曝光装置的聚焦光学系统中，调整像散光学系统中的柱面透镜和4分辨率检测器之间的相对位置关系，使得出现在来自光盘的反射光中的干涉条纹主人被发现在四分之一检测器的死区。因此，实现了不受干涉条纹引起的聚焦误差信号变化影响的像散聚焦伺服。结果，可以抑制出现在从光盘或光盘母盘导出的反射光中的干涉条纹的影响。

2. 发明申请

US20120263029A1 OPTICAL INFORMATION RECORDING MEDIUM 失效
标题翻译：光信息记录介质
公开(公告)号：US20120263029A1
公开(公告)日：2012-10-18
申请号：US13384069
申请日：2010-07-15
申请人： Hideharu Tajima , Atsushi Etoh , Hiroaki Ashiwa , Makoto Suzuki , Ryo Kojima , Masahito Konishi , Isamu Kuribayashi
发明人： Hideharu Tajima , Atsushi Etoh , Hiroaki Ashiwa , Makoto Suzuki , Ryo Kojima , Masahito Konishi , Isamu Kuribayashi
IPC分类号： G11B3/70 , G11B7/26
CPC分类号： G11B7/00736 , G11B7/0079 , G11B7/24038 , G11B7/24041 , G11B7/2433 , G11B7/254 , G11B7/2578 , G11B7/259
摘要： An optical information recording medium (1) includes on a substrate (50), a ROM layer (20), a RE layer (40), an intermediate layer (30) separating the ROM layer (20) and the RE layer (40), and a light transmitting layer (10) provided farthest from the substrate (50). The RE layer (40) is an information recording layer provided most farthest from the light transmitting layer (10), and is a recording layer of BCA recorded in a format easily determinable as compared to an information recording format used in the ROM layer (20), and antifouling property of a surface of the light transmitting layer (10) is set based on the RE layer (40). This makes it easy for the recording and reproducing apparatus to confirm a disc type, allows for sharing one recording and reproducing apparatus with other types of optical discs, and simplifies the disc production. Furthermore, an optical information recording medium is accomplished, in which outdated data on the ROM layer is replaced by recording, on the RE layer, updated data obtained while Internet connection can be established.
摘要翻译：光信息记录介质（1）包括在基板（50），ROM层（20），RE层（40），分离ROM层（20）和RE层（40）的中间层（30），以及距离基板（50）最远的透光层（10）。 RE层（40）是与光发射层（10）最距离设置的信息记录层，并且是以与在ROM层（20）中使用的信息记录格式相比容易确定的格式记录的BCA的记录层），并且基于RE层（40）设定透光层（10）的表面的防污性。这使得记录和再现装置易于确认盘类型，允许与其他类型的光盘共享一个记录和再现装置，并且简化了盘的制作。此外，在RE层上，通过记录来实现在ROM层上的过时数据被替换的光信息记录介质，可以建立互联网连接时获得的更新数据。

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