| 摘要 |
<p>[Problem] To heighten the resonance frequency of an objective lens holder and reduce the resonance gain. [Solution] The present invention comprises: a rectangular holder plate in which the objective lens is held; planar first and second tripod plates that rise in the same direction from the opposing two sides of the holder plate, each of which tripod plates having mounted thereon coils for displacing the objective lens in at least one of the focusing direction or the tracking direction; and a reinforcing plate for the holder plate and the first and second tripod plates, the reinforcing plate being mounted on the surfaces of the sides enclosed by the holder plate and the first and second tripod plates.</p> |
