Optical disk drive and read/write apparatus

An optical disk driving apparatus comprising:

• a driving means for rotating a magneto-optical disk held on a turntable;
• a beam polarizing means for polarizing a laser beam emitted from a laser source in a direction toward a magnetized information area;
• an optical head member having an objective lens for converging said polarized laser beam on said information area, said optical head member being opposed to said optical disk;
• and
• a linear motor mechanism for moving said optical head member along the radial direction of said disk to a predetermined position of said information area of said optical disk, wherein said optical head member comprises at least two optical heads facing on at least one side of said disk,
• said optical heads being disposed on the circumference of a circle and having an equiangular interval,
• said optical heads operative to independently perform an erasure, recording and reproduction of data from and in said disk through said optical heads, and said optical heads having the same composition, respectively;
• further wherein the optical axis of the objective lens is moved along the radial direction of said disk by said linear motor mechanism so that the optical axis of the objective lens is on a center line extending on the axis of rotation of said disk.