Patent ID: 7032231

Claim:
An optical pickup device comprising: a blade in which an objective lens is mounted; a plurality of wires to elastically and movably support the blade with respect to a holder formed on a base; driving coils installed in or on the blade and forming an electrical path to drive the objective lens along a focusing direction and a tracking direction; and a magnet which is installed in the base and generates an electromagnetic force due to currents flowing through the driving coils to move the objective lens; wherein: the blade includes a first blade portion made of a reinforced plastics material in which the objective lens is mounted, and a second blade portion made of a magnesium alloy material in which the driving coils are mounted, a thermal conductivity coefficient of the first blade portion is lower than a thermal conductivity of the second blade portion, and the first blade portion is combined with a combining unit included in the second blade portion by mounting the second blade portion in a die, and injecting the die with the reinforced plastics material.