OPTICAL PICKUP AND OPTICAL INFORMATION PROCESSING APPARATUS

A disclosed optical pickup for performing at least recording, reproduction, or deletion of information on a first, second, third, and fourth optical recording media having different recording densities includes a first light source configured to emit first light having a first wavelength lambda1 cor...

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Bibliographic Details
Main Authors HAMANO YUKIKO, HIRAI HIDEAKI
Format Patent
LanguageEnglish
Published 12.01.2009
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:A disclosed optical pickup for performing at least recording, reproduction, or deletion of information on a first, second, third, and fourth optical recording media having different recording densities includes a first light source configured to emit first light having a first wavelength lambda1 corresponding to the first and second optical recording media; a second light source configured to emit second light having a second wavelength lambda2 corresponding to the third optical recording medium; a third light source configured to emit third light having a third wavelength lambda3 corresponding to the fourth optical recording medium; an objective lens configured to focus the first light, the second light, and the third light on corresponding recording surfaces of the first, second, third, and fourth optical recording media; and an aberration correcting unit between the objective lens and the first, second, and third light sources.
Bibliography:Application Number: KR20087025795