JP2007234069A5 - - Google Patents

Claims (12)

A collimating lens that makes light output from the light source substantially parallel;
A condensing lens for condensing the substantially parallel light onto an information medium;
A drive unit for changing the position of the condenser lens;
A heat conducting member provided on the collimating lens ;
A base for fixing the collimating lens;
An optical pickup device comprising:
At least a part of the heat conducting member is provided on the outer periphery of the collimating lens,
Furthermore, a part of the said heat conductive member is provided in the said base, The optical pick-up apparatus characterized by the above-mentioned . The drive unit includes a coil unit and a magnet that change the position of the condenser lens,
The optical pickup device according to claim 1, wherein at least a part of the heat conducting member is provided on the coil portion side of the collimating lens. The thermal conductivity of the heat conductive member is higher than the thermal conductivity of the collimating lens, the optical pickup apparatus according to claim 1 or 2. The thermal conductivity of the heat conductive member is about 1W / (m · K) or more, the optical pickup device written in any one of claims 1 to 3. Further comprising a sliding unit for sliding said collimator lens, an optical pickup device according to any one of claims 1 to 4. An optical pickup device according to any one of claims 1 to 5 ,
A motor for rotating the information medium;
An optical disc apparatus comprising: a control unit for controlling the driving unit. A light source that outputs light;
A collimating lens for making the light output from the light source substantially parallel light;
A condensing lens for condensing the substantially parallel light onto an information medium;
A drive unit for driving the light source;
A heat conducting member provided on the collimating lens ;
A base for fixing the collimating lens;
An optical pickup device comprising:
At least a part of the heat conducting member is provided on the outer periphery of the collimating lens,
Furthermore, a part of the said heat conductive member is provided in the said base, The optical pick-up apparatus characterized by the above-mentioned . The optical pickup device according to claim 7 , wherein at least a part of the heat conducting member is provided on the drive unit side of the collimating lens. 9. The optical pickup device according to claim 7 , wherein a thermal conductivity of the thermal conductive member is higher than a thermal conductivity of the collimating lens. The thermal conductivity of the heat conductive member is about 1W / (m · K) or more, the optical pickup apparatus according to any one of claims 7 to 9. Further comprising a sliding unit for sliding said collimator lens, an optical pickup apparatus according to any one of claims 7 10. An optical pickup device according to any one of claims 7 to 11 ,
A motor for rotating the information medium;
An optical disc apparatus comprising: a control unit for controlling the driving unit.