Tested and verified in practical optical pickup head, this lens canful fill the requirement of digital versatile disk pickup systems.
经过实际应用，证明这种结构完全能够满足高密度光盘光学头的技术要求。
2
Spot size detection method is representative method to obtain a focus error digitalopticaldisk storage system.
光斑尺寸法是数字光盘信息存储中的典型聚焦误差探测方法。
3
The paper analyzes the principle of components of magneto opticaldisk driver focusing and tracking servo system, then designs and realizes a DSP based digital servo control system.