Patent ID: 7075872

Claim:
An objective lens supporting apparatus of an optical pickup for focusing and positioning a light beam spot onto a disk type medium being recorded with information to be optically read, comprising: an objective lens; a lens frame on which the objective lens is attached, the lens frame having a receiving member which receives driving forces for displacing the objective lens in a direction of an optical axis thereof and in a direction perpendicular to the optical axis; a support base; two pairs of upper and lower wire-like elastic members arranged on a left side and a right side respectively, each wire-like elastic member being extended from the support base and fixed to the lens frame and adapted to support the lens frame in a cantilevered manner so as to permit the lens frame to swing; a pair of magnets disposed on the support base at a predetermined interval and opposed to each other on the left side and right side respectively so that the lens frame and the upper and lower wire-like elastic members are interposed therebetween; a first coil part being interposed between the pair of magnets and fixed to the lens frame and adapted to tilt the lens frame by being energized so as to incline the optical axis of the objective lens with respect to the support base; and a second coil part being interposed between the pair of magnets and fixed to the lens frame, wherein the left side and right side wire-like elastic members are disposed in such a way as to converge toward the lens frame, wherein the first coil part comprises a pair of first coils attached to both side parts of the lens frame, which are respectively opposed to the pair of magnets, in such state where the pair of first coils project downwardly from the lens frame and oppose each other, and wherein the second coil part comprises a pair of second coils attached to the both side parts of the lens frame, the second coils being adjacent to the first coils, respectively, and arranged at different positions with respect to the first coils in the direction of the optical axis.