DRIVING DEVICE FOR OPTICAL DISK

PURPOSE:To obtain a driving device, accessible at a high speed, of an optical disk by connecting the movable part of a lens with that of a carriage in a freely displaceable state through an elastic supporting member which is displaceable in the radius direction of the optical disk. CONSTITUTION:When electric current flows through the cylindrical tracking coils 30, 3 fixed with the movable member 25 of the lens, the tracking coil 30 which is formed between a permanent magnet 45 and a magnetic path member 33 and the tracking coil 31 which is in a magnetic field formed between a permanent magnet 46 and a magnetic path member 34 are displaced in the radius direction of the optical disk through an electromagnetic force which is generated by the electric current flowing through each tracking coil and a magnetic fluxes intersecting the coils. The displacement of this movable member 25 is easily performed through the deformation of thin leaf springs 40, 41 connecting between an intermediate member 35 and the bent part 42 of an end of the carriage 47. Consequently, the movable part 25 of the lens is efficiently driven for displacement, and a high speed access is made possible with a small electric consumption.