发明名称 Optical disk apparatus and optical pickup device equipped with spherical aberration mechanism
摘要 The present invention provides an optical disk apparatus and an optical pickup which are of a thin type and capable of correcting spherical aberration, including: a semiconductor laser for emitting light; an objective lens for condensing the light from the semiconductor laser on a recording layer through a light transmission layer; at least two optical elements arranged between the semiconductor laser and the objective lens and having a predetermined refractive power; a spherical aberration correction element driving mechanism for moving at least one of the optical elements along an optical axis so as to cancel spherical aberration of imaging light on the recording layer; and a lens holder for holding at least one of the optical elements, a part of the lens holder being inserted into an opening of a cartridge.
申请公布号 US2005157608(A1) 申请公布日期 2005.07.21
申请号 US20040020103 申请日期 2004.12.27
申请人 CANON KABUSHIKI KAISHA 发明人 NAGATSUKA OSAMU
分类号 G11B7/12;G11B7/00;G11B7/135;(IPC1-7):G11B7/00 主分类号 G11B7/12
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