Optical pickup apparatus with light source unit including first light source and common light receiving section
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United States of America Patent
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Oct 14, 2003
Grant Date -
N/A
app pub date -
Aug 30, 2000
filing date -
Aug 31, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical pickup apparatus has a light source unit that includes a first light source and a common light-receiving device having first and second light-receiving sections. The optical pickup apparatus further includes an optical path composition element that guides first light emitted from the first light source and second light emitted from another light source into an optical path that passes an objective lens, and an optical path polarization element that guides reflected lights of the first and the second lights to the common light-receiving device. The optical path polarization element is mounted in the light source unit for guiding reflected lights of the first and second lights to the common light-receiving device.
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