US Patent 7746733 Optical pickup unit and optical disc apparatus
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Patent abstract
An optical pickup unit is disclosed which comprises: an objective lens that focuses laser light on an optical disc; a lens holder that holds the objective lens; a coil that is fitted on the lens holder and capable of driving the lens holder; and a heat transfer improving member that is fitted on the holder to cause heat to be radiated, wherein the heat is generated in the coil when the coil is energized.
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Patent Inventor Names
Akira Iijima0
Kiyoshi Hibino0
Takamitsu Touno0
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US Patent 07746733 Optical pickup unit and optical disc apparatus US Patent 7746733 Optical pickup unit and optical disc apparatus
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Patent Number
07746733
Patent Number
7746733
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US Patent 07746733 Optical pickup unit and optical disc apparatus
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Is a
Patent jurisdiction
Patent number
07746733
Date of patent
June 29, 2010
Patent application number
11669754
Date Filed
January 31, 2007
Patent primary examiner
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