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发明申请
US20050243674A1 Optical pickup, optical information processing apparatus and optical information processing method 审中-公开
光学拾取，光学信息处理设备和光学信息处理方法

Optical pickup, optical information processing apparatus and optical information processing method
摘要：
In a case where the optical recording medium comprises a multi-layer optical recording medium having a plurality of information recording surfaces, the following equation is satisfied on each information recording surface x (x=1, 2, . . . ) of the multi-layer optical recording medium: |CLx/CDx|≧1, where CDx (x=1, 2, . . . ) denotes each least squire error value (unit: λrms) of a cubic coma aberration component occurring per unit angle when the multi-layer optical recording medium is inclined; and CLx (x=1, 2, . . . ) denotes each least squire error value (unit: λrms) of a cubic coma aberration component occurring per unit angle when the objective lens is inclined in a case where the laser light is condensed and applied to a predetermined information recording surface x of the multi-layer optical recording medium.
摘要（中）：

在光记录介质包括具有多个信息记录表面的多层光学记录介质的情况下，在多个信息记录表面的信息记录表面x（x = 1,2，...）上满足以下等式， 表示：当CDx（x = 1,2，...）表示当每单位角度出现的立方彗形象差分量的每个最小方位误差值（单位：lambdarms）时， 多层光记录介质倾斜; CLx（x = 1,2，...）表示在激光冷凝的情况下，当物镜倾斜时，每单位角度出现的立方彗形像差分量的每个最小方位误差值（单位：lambdarms） 施加到多层光学记录介质的预定信息记录表面x。

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