Patent ID: 7646697
Filing Date: 2010-01-12
Classification: G11B

Abstract:
1. An optical head device comprising; a frame type of laser beam emitting element which is provided with a heat radiating fin on which a laser chip is mounted; a light receiving element for signal detection; an optical system which structures an optical path from the light beam emitting element to an optical disk and an optical path from the optical disk to the light receiving element; a device frame on which the laser beam emitting element, the light receiving element and the optical system are mounted; and a heat radiation member which is formed of material having a superior heat conduction property; wherein when a side on which said laser chip is mounted of the laser beam emitting element is defined as an upper face side; the upper face of the laser beam emitting element is fixed in the device frame, and an under face of the heat radiating fin which corresponds to a portion where the laser chip of the laser beam emitting element is mounted is exposed on an outer side to form an exposed part, and the heat radiation member is disposed to extend over the exposed part and the device frame.