Optical pickup using split beams impinging on different photodet

Optical read/write head low angle beamsplitter and coplanar dete

Optical read/write head with low angle beam splitter and coplana

Optical readout method with a direction of a magnetic field appl

Optical recording and reproducing apparatus

Optical recording and/or reproducing apparatus with stupping mot

Optical recording apparatus having improved erasing capability

Optical recording media having increased erasability

Optical recording medium allowing high-density recording and...

Optical recording medium and optical recording and...

Optical recording medium and optical recording device

Optical recording medium and optical recording/reproducing...

Optical recording medium and optical recording/reproducing...

Optical recording medium and production method therefor

Optical recording medium which includes a corrosion resistant fi

Optical recording medium with prepit regions and...

Optical recording medium with solid protective layer having...

Optical recording medium, memory apparatus, and...

Optical recording medium, memory apparatus, and...

Optical recording medium, method of producing same, and...