Optical pickup device with heat radiating structure
AssigneeHitachi Media Electronics Co., Ltd.
InventorsHiroyuki Toyoda, Junichi Senga, Takayuki Fujimoto, Seiichi Katou, Hitoshi Matsushima
Life of this patent
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Abstract
An optical pickup device 50 comprising a laser diode 1, a photo detector 2, a housing 3 having an optical system for guiding light from the laser diode 1 to an optical disk and guiding light reflected on the optical disk to the photo detector, a wiring 5 to supply current to the laser diode 1, and a metallic cover 9 provided outside of the housing 3, wherein the laser diode 1 is bonded to the housing 3 by adhesive, a metallic member 10 is mounted on the surface of the laser diode 1 by connecting thermally, and the metallic member 10 is thermally connected to the cover 9 by solder.
Claims4
An optical pickup device comprising a laser diode, a photo detector, a housing having an optical system for guiding light from the laser diode to an optical disk and guiding light reflected on the optical disk to the photo detector, a wiring to supply current to the laser diode, and a metallic cover provided outside of the housing,
- wherein the laser diode is bonded to the housing by adhesive, a metallic member is mounted on the surface of the laser diode by connecting thermally, and the metallic member is thermally connected to the cover by solder,
- wherein the laser diode comprises a frame made of conductive metal, a laser diode chip provided on one of flat surfaces of the frame, and multiple terminals protruded from the other flat surface of the frame, and the metallic member is thermally connected to the other flat surface of the frame, and
- wherein the laser diode is fixed to a support member equipped with a protrusion for working as a rotary shaft, the support member is bonded to the housing by the adhesive so that the support member can rotate with the protrusion as a rotating axis, the metallic member is extended along the rotary shaft of the protrusion and the extended end thereof is connected to the cover.
Dependencies are inferred from the claim text.