OPTICAL PICKUP ACTUATOR CAPABLE OF PERFORMING A TILT DRIVING FUNCTION, PARTICULARLY CONCERNED WITH ENABLING FOCUSING DRIVING, TRACKING DRIVING, AND TILT DRIVING PROCESSES

PURPOSE: An optical pickup actuator capable of performing a tilt driving function is provided to enable focusing, tracking, and tilt driving processes, and to locate tracking coils based on a central polarization line of a magnet, thereby using both coils as available coils, consequently sensitivity can be improved. CONSTITUTION: A holder(103) is located on one side of a base(100). A blade(120) is mounted with an objective lens(105), and comprises a guide groove(115). A magnetic driving unit(125) comprises the first and second magnets(130,131) disposed to face each other by being polarized on the right and the left in track direction(T), tracking coils(145) disposed to face each other for N and S poles of the first and second magnets(130,131), and at least two focusing-combined tilt coils(140) disposed to face each other for each polarization of the magnets(130,131). The magnetic driving unit(125) is installed by crossing the guide groove(115). Elastic supporting members(110) movably support the blade(120) in connection with the holder(103).