Optical head and optical disc device
An optical head and optical disc apparatus according to the present invention can guide each of optional light rays of different wavelength from a plurality of light sources to a recording medium through a single optical system, and can play back the signal from the reflected light from the recordin...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | An optical head and optical disc apparatus according to the present invention can guide each of optional light rays of different wavelength from a plurality of light sources to a recording medium through a single optical system, and can play back the signal from the reflected light from the recording medium through a single light receiving system. |
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