Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kenji Kan0
Date of Patent
November 10, 2009
0Patent Application Number
114245010
Date Filed
June 15, 2006
0Patent Primary Examiner
Patent abstract
An optical pickup unit is disclosed that comprises a first light-emitting element capable of emitting first-wavelength light; a second light-emitting element capable of emitting second-wavelength light whose wavelength is different from that of the first-wavelength light; a polarizing mirror transmitting or reflecting the first-wavelength light and reflecting the second-wavelength light; a first objective lens converging the first-wavelength light on a first medium; and a second objective lens converging the first-wavelength light or the second-wavelength light on a second medium.
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