OBJECTIVE LENS DRIVING DEVICE, AND OPTICAL PICKUP DEVICE WITH THE SAME

摘要

PROBLEM TO BE SOLVED: To maintain the center-of-gravity balance of a lens holder for holding a plurality of objective lenses.

SOLUTION: The lens holder for holding a plurality of objective lenses arranges and holds the plurality of objective lenses by aligning a first combined center of gravity regarding the plurality of objective lenses with a second combined center of gravity regarding the entire lens holder excluding the plurality of objective lenses. The first combined center of gravity is obtained as a weighted average position of a mass point by assuming the objective lens as the mass points.

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