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- W2327174183 abstract "This paper presents a lens actuator of optical head in an optical disc drive. A newly developed moving magnet method is applied to a two dimensional sliding and rotary lens actuator, and radically simplified. This method is to compose a magnetic suspension in focusing and tracking direction by means of yokes and a ring-shaped magnet magnetized in four pole at unequal intervarls, and the designing method of magnetic suspension is disclosed by a detailed magnetic field analysis. It has been further confirmed by analysis and experiment that the force in an undesired direction caused by movement of the magnet can be reduced by symmetrical magnetization. As a result, in driving force, control band and other characteristics, the same performance as in the moving coil type have been recognized." @default.
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- W2327174183 date "1990-01-01" @default.
- W2327174183 modified "2023-10-02" @default.
- W2327174183 title "Development of the moving magnet type two dimensional actuator in optical disk drives." @default.
- W2327174183 doi "https://doi.org/10.2493/jjspe.56.399" @default.
- W2327174183 hasPublicationYear "1990" @default.
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