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- W2003904920 abstract "Based on nm fabrication technology, a developed player for dual and multilayer disk is proposed in this paper. A multifocus device with focus 8.5 mm is used. The distance between two neighbor focal plane is 0.45 mm. The numeral aperture of the developed player is 0.59, the focusing spot is 0.93 um. The developed player with the multifocus device is not only simple in structure, light in weight, but also can focus automatically at any layer of multilayer disk eve, no mechanical movement. Compared to the common CD player, the developed player is characteristic of only one multifocus device to focus and split beam, where the prism and the grating in common CD player are displaced, but the focusing and the tracing error signals can be obtained conveniently for servo detection." @default.
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- W2003904920 date "1996-09-20" @default.
- W2003904920 modified "2023-09-23" @default.
- W2003904920 title "<title>Developed player for multilayer disk</title>" @default.
- W2003904920 doi "https://doi.org/10.1117/12.251983" @default.
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