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Lens actuator for dual lens optical disk apparatus having lens mounting base stopper and selected lens sensor
Lens actuator for dual lens optical disk apparatus having lens mounting base stopper and selected lens sensor
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机译:用于具有镜头安装基座制动器和所选镜头传感器的双镜头光盘设备的镜头致动器
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摘要
A lens actuator for use in an optical data reader, comprising: a base on which a plurality of N (N=natural number not less than two) objective lenses corresponding to N optical data recording media having substrates of different thicknesses, respectively are mounted; a supporting shaft which is provided on the base such that the base is movable vertically and rotatable within predetermined ranges, respectively relative to the supporting shaft; a pair of driving coils for performing changeover among the objective lenses and tracking follow- up of the data recording media; and N pairs of magnets which form a magnetic circuit together with the driving coils such that the base is rotated by the driving coils and the magnets.
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