OPTICAL HEAD, OPTICAL HEAD MANUFACTURING METHOD, AND OPTICAL DISK DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an optical head, an optical head manufacturing method, and an optical disk device correcting coma aberration caused by difference in positions of a plurality of laser beams having different wavelengths.

SOLUTION: A two-wavelength laser beam source 1 is arranged to correct coma aberration caused in the radial direction of a CD 80 when an objective lens 6 is tilted to locate the inner peripheral end of the objective lens 6 in the radial direction of the CD 80 lower than the outer peripheral end thereof, and an objective lens actuator 9 tilts the objective lens 6 to locate the inner peripheral end of the objective lens 6 in the radial direction of the CD 80 lower than the outer peripheral end thereof.

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