Patent ID: 7336567

Claim:
An optical head device comprising: an objective lens for converging an emitted beam from a light source to an optical recording medium; a lens holder for holding the objective lens; a plurality of wires for supporting the lens holder; and a holder support member for movably supporting the lens holder by the plurality of wires in a tracking direction, a focusing direction and a tilt direction; said plurality of wires comprising two pairs, each of the pairs further comprising a composite wire composed of two wires and a single wire composed of one wire which are respectively disposed on an upper side and a lower side of the lens holder in the focusing direction, each pair being disposed on both sides of the lens holder in the tracking direction, the base end sides of the composite wire and the single wire being respectively fixed to the holder support member and the front end sides of the composite wire and the single wire being respectively fixed to the lens holder, and a spring constant of the composite wire being set to be approximately equal to a spring constant of the single wire.