A optical pickup includes: a laser diode; a driver including a first output end of a laser diode drive current; a first line electrically connected to the first output end of the driver and a first port of the laser diode; a second line provided adjacent to the signal line at at least one location or more and electrically connected to a second port of the laser diode; a printed circuit board including the first and second lines; and a metal heat dissipation cover for the driver. The first and second lines form a two layer structure in which the first and second lines are vertically disposed. The line width of the line provided close to the heat dissipation cover is wider than the line width of the other line between the first and second lines in the two layer structure.