The present invention provides an optical pick-up device capable of
suppressing the inclination of a lens actuator in the jitter direction
caused by the variation of the ambient temperature thereof to stably
record or reproduce information to or from an optical disk. In the
optical pick-up device, a supporting member 106 for fixing one end of
each of suspension members 105 is arranged on a rear side of a suspension
holder 2 fixed to a yoke base 103, and an object lens 102 is displaced by
servo-controlling a lens holder 101 for holding the other ends of the
suspension members in an electromagnetic driving manner to adjust the
irradiation position of a beam spot on an optical disk. The suspension
holder 2 is formed of a plurality of members having different
coefficients of linear expansion, and the members having a higher
coefficient of linear expansion are arranged on the rear side of the
suspension holder 2. Therefore, the supporting member 106 is displaced by
the linear expansion of the members having a higher coefficient of linear
expansion according to the variation of temperature, thereby suppressing
inclination of a lens actuator L.