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发明名称
光学记录载体
摘要
为增加一记录载体(2)之满意可读资讯结构的资讯密度,该记录载体之后侧(4)可具有用于在与入射读取光束(20)之主光线成一锐角上来反射读取光束辐射的构件(82、84;86)。以此方式,可相对于物镜(18)之光瞳来改变由资讯结构绕射形成之处于不同级别(order)的子光束b(0)、b(+1)、b(–1),而不会将像差导入读取点(21)。该构件可具有一锯齿形或三角形(82、84)或可由一规则绕射格栅(86)形成。
申请公布号
TW200501103
申请公布日期
2005.01.01
申请号
TW093108123
申请日期
2004.03.25
申请人
皇家飞利浦电子股份有限公司
发明人
威廉 杰拉德 欧芬伊
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
陈长文
主权项
地址
荷兰
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