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    • 8. 发明授权
    • Optical servo writing
    • 光伺服写
    • US06445667B1
    • 2002-09-03
    • US09613936
    • 2000-07-11
    • Bruce E. BernackiGeorge T. KriegerFred C. Thomas, III
    • Bruce E. BernackiGeorge T. KriegerFred C. Thomas, III
    • G11B700
    • B82Y10/00G03F7/70291G11B7/00454G11B7/00745G11B7/0938G11B7/122G11B7/1372G11B7/1387G11B7/261G11B11/10565G11B11/10578G11B11/10584G11B11/10597
    • The present invention relates to a method for servo writing an optical or magneto-optical medium where a data path is defined by transmitting a laser beam onto the medium to change the crystalline structure at preselected portions. These portions can guide an optical head along the data path. Embodiments include using a far-field laser servo writer to transmit a laser beam in combination with a high numerical aperture, using a far-field laser servo writer to transmit a laser beam in combination with a solid immersion lens, using a near-field laser servo writer to emit a laser beam in combination with a solid immersion lens, creating a sub-wavelength aperture for emitting a laser beam onto the medium, lithographic and maskless lithographic techniques. The present invention also relates to a medium for the storage of data which has portions of its substrate with a different crystalline structure than the rest of the substrate of the medium, so that these portions of the substrate can serve as optically created servo fields for a tracking device.
    • 本发明涉及一种用于伺服写光学或磁光介质的方法,其中通过将激光束传输到介质上来限定数据路径,以改变预选部分处的晶体结构。 这些部分可以沿着数据路径引导光学头。 实施例包括使用远场激光伺服写入器,使用远场激光伺服写入器结合高数值孔径传输激光束,使用近场激光器将激光束与固体浸没透镜组合传输 伺服写入器与固体浸没透镜组合发射激光束,产生用于在介质上发射激光束的亚波长孔径,光刻和无掩模光刻技术。 本发明还涉及用于存储数据的介质,其具有与衬底的其余部分不同的晶体结构的衬底的部分,使得衬底的这些部分可以用作光学产生的伺服磁场,用于 跟踪装置。