Astigmatic objective lens for optical head

Astigmatism generating device to remove comma aberration and...

Atomic force microscope with a plurality of cantilevers for reco

Atomic resolution storage systems with enhanced magnetic...

Audio data recording/reproducing apparatus having digital high-s

Automatic gain controller for preventing peaking in optical...

Automatic power calibration apparatus for optical recording...

Balance gain tuning apparatus capable of connecting errors...

Bandwidth reduction in writeable optical data storage apparatus

Beam applying method, beam applying apparatus, and optical...

Beam combining and separating apparatus useful for combining and

Beam control device utilizing beam having a specific direction o

Beam controller for magneto-optical disc memory system

Beam controller for magneto-optical disc memory system

Beam diameter expansion of a multi-beam optical information syst

Beam expander to change an elliptical light beam emitted from a

Beam expansion and relay optics for laser diode array

Beam focusing in near-field optical recording and reading

Beam shaping device

Beam shaping device