专利内容由知识产权出版社提供
专利名称：OPTICAL PICKUP AND OPTICAL
INFORMATION PROCESSING APPARATUS
发明人：Yukiko Hamano,Hideaki Hirai申请号：US12297385申请日：20070418
公开号：US20090097381A1公开日：20090416
专利附图：
摘要：A disclosed optical pickup for performing at least recording, reproduction, ordeletion of information on a first, second, third, and fourth optical recording media havingdifferent recording densities includes a first light source configured to emit first light
having a first wavelength λ corresponding to the first and second optical recordingmedia; a second light source configured to emit second light having a second wavelengthλ corresponding to the third optical recording medium; a third light source configured toemit third light having a third wavelength λ corresponding to the fourth optical recordingmedium; an objective lens configured to focus the first light, the second light, and thethird light on corresponding recording surfaces of the first, second, third, and fourthoptical recording media; and an aberration correcting unit between the objective lens andthe first, second, and third light sources.
申请人：Yukiko Hamano,Hideaki Hirai
地址：Kanagawa JP,Kanagawa JP
国籍：JP,JP
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