Patent ID: 6069862
Filing Date: 2000-05-30
Classification: G11B

Abstract:
An optical head comprising:first light emission means for generating light having a predetermined wave length;second light emission means for generating light having a different wave length from that of said first light emission means;beam convergent means for converging a first light flux outputted from said first light emission means on the information recording surface of a first disk and converging a second light flux outputted from said second light emission means on the information recording surface of a second disk which is different from said first disk in the corresponding wave length;beam reflect means which is arranged between said first light emission means and said beam convergent means and changes the beam direction of said first light flux; andbeam synthesize means which is arranged between said beam reflect means and said beam convergent means and synthesizes said first light flux and said second light flux;wherein the optical axis of said beam convergent means is substantially perpendicular to said information recording surfaces of said first and second disks, and the optical axis of said first light emission means intersects the optical axis of said beam convergent means substantially orthogonally, said first and second light emission means being arranged so that the optical axis of said first light emission means and the optical axis of said second light emission means are parallel with each other, and said beam synthesize means being arranged on a light axis perpendicular to the recording surface of said first and second disks.