Panasonic Corporation

Koji Ieki

Hironori Tomita

Kanji Wakabayashi

Osamu Kajino

In one embodiment, an optical pickup device includes a fixed portion, a movable portion, first and second elastic supporting membersand, one and the other ends of which are secured to the fixed portionand the movable portion, respectively, and an objective lenssecured to the movable portion. The objective lensis arranged inside of the area that is defined between two lines that are respectively drawn from one and the other ends of the first elastic supporting memberperpendicularly to the first elastic supporting memberand outside of the area defined between the first and second elastic supporting membersand

Optical pickup device, optical pickup unit and data streamer apparatus

The objective lens driving device of the present invention for an optical pickup device is provided. The device includes first and second objective lenses, and a lens holder for supporting the first and second objective lenses. The lens holder has a first through-hole for passage of first laser beam and a second through-hole for passage of second laser beam. Where a plane defined by a central axis of the first objective lens and a central axis of the second objective lens is a central plane, a plane perpendicular to the central plane and including the central axis of the first objective lens is a first plane, and a plane perpendicular to the central plane and including the central axis of the second objective lens is a second plane; the first through-hole is asymmetrical with respect to the first plane and/or the second through-hole is asymmetrical with respect to the second plane.

Growing community of inventors

Osaka, Japan

Koji Ieki