An optical head device including a lens holder which holds an objective
lens, six wires for supporting the lens holder and a holder support
member which movably supports the lens holder by the six wires in a
tracking, focusing and tilt direction. The six wires comprise two pairs,
each of the pairs 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.
The spring constant of the composite wire is set to be approximately
equal to a spring constant of the single wire. Alternatively, the six
wires may be disposed on the same circumference with respect to a drive
center in the tilt direction or the spring constant of one wire of the
pair may be set to be smaller than spring constants of the other two
wires of the pair.