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    • 27. 发明授权
    • Multi-layered media aberration compensation apparatus, method, and system
    • 多层介质像差补偿装置,方法和系统
    • US07826329B2
    • 2010-11-02
    • US11242987
    • 2005-10-04
    • Nils HausteinCraig Anthony KleinDaniel James Winarski
    • Nils HausteinCraig Anthony KleinDaniel James Winarski
    • G11B7/135
    • G11B7/13925G11B7/1369G11B7/1378G11B2007/0013
    • An apparatus, system, and method are disclosed for aberration compensation. In one embodiment, a first compensation lens used in conjunction with a second compensation lens to produce a conical beam used to read from, or write to, an optical medium. An Nth order compensation equation is used to optimize aberration errors associated with accessing the optical medium. The present invention may include a displaceable focus lens positioned relative to an optical medium. The focus lens may be displaced when the conical beam's focal length is adjusted. A displacement equation is presented to determine the preferred placement of the focus lens. By compensating for aberration, read/write errors may be reduced while accessing optical media thus increasing system robustness and facilitating the use of additional layers on optical media.
    • 公开了用于像差补偿的装置,系统和方法。 在一个实施例中,第一补偿透镜与第二补偿透镜一起使用以产生用于从光学介质读取或写入光学介质的锥形束。 使用N阶补偿方程来优化与访问光学介质相关联的像差。 本发明可以包括相对于光学介质定位的位移聚焦透镜。 当锥形束的焦距被调整时,聚焦透镜可以被移位。 呈现位移方程以确定聚焦透镜的优选放置。 通过补偿像差,可以在访问光学介质的同时减少读/写错误,从而提高系统的鲁棒性并促进在光学介质上使用附加层。