OPTICAL PICKUP AND OPTICAL DISK DEVICE

PROBLEM TO BE SOLVED: To achieve downsizing and cost saving and to prevent occurrence of an optical aberration due to the temperature gradient of an objective lens without sacrificing responsiveness. SOLUTION: A lens holder 2 is provided with one focusing coil 20 and two tracking coils 30. The lens holder 2 has a housing recessed part 2002 for housing an objective lens 7. Films 40 having thermal conductivity are disposed between the inner peripheral surface 2006 of the lens holder 2 and the outer peripheral surface 7002 of the objective lens 7 and between the bottom face 2008 of the lens holder 2 and one lens face 7004. The objective lens 7 is bonded by an adhesive to the housing recessed part 2002 and is attached therein in a state that the films 40 are held interposed between the inner peripheral surface 2006 of the lens holder 2 and the outer peripheral surface 7002 of the objective lens 7 and between the bottom face 2008 of the lens holder 2 and one lens face 7004. COPYRIGHT: (C)2006,JPO&NCIPI