Spherical aberration detection scheme for optical pickup units using the push-pull signal

被引:0
|
作者
Knittel, J [1 ]
Richter, H [1 ]
机构
[1] Deutsch Thomson Brandt GMBH, Corp Res, CH-78003 Villigen, Switzerland
关键词
optical pickup; diffractive; push-pull; spherical aberration; telescope;
D O I
10.1143/JJAP.43.4832
中图分类号
O59 [应用物理学];
学科分类号
摘要
We present a new method to generate a spherical aberration error (SAE) signal for an optical pickup unit. The SAE signal is derived from two push-pull signals that are generated by a special diffractive optical element. First experiments provided a proof of principle.
引用
收藏
页码:4832 / 4834
页数:3
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