Optical disk with magnetic layer separated magnetically...

Optical element for enhanced transmission of light and...

Optical focusing apparatus for the reading of a data medium movi

Optical head and apparatus provided therewith

Optical head and information storage device

Optical head and optical information processor using the same

Optical head for near-field recording and reproducing device

Optical head having a plurality of coil elements connected...

Optical head having a plurality of coil elements connected...

Optical head having dual optical paths

Optical head having light reflection prevention film, and...

Optical head having object lens and patterned coil

Optical head slider, method for manufacturing optical head...

Optical head with improved extinction ratio for magneto-optical

Optical head, optical disc device and information recording...

Optical information recording and reproducing apparatus

Optical information recording and reproducing apparatus

Optical information recording and/or reproducing apparatus in wh

Optical information recording-reproducing apparatus including a

Optical information recording/reproducing apparatus and method c