On-groove recordation type optical disc
Optic disk protective assembly
Optical and magnetooptical recording medium having a low thermal
Optical card
Optical card and a recording/reproduction apparatus for the same
Optical compact disc with an increased memory capacity
Optical data carriers and reading devices therefor
Optical data carriers and reading devices therefor
Optical data recording apparatus producing a laser beam having a
Optical data recording disc and system
Optical data recording medium
Optical data recording medium
Optical data recording medium excellent in recording...
Optical data recording medium having clock pits, servo pits,...
Optical data storage and systems utilizing plasmon lenses
Optical data storage cartridge having a dual shutter configurati
Optical data storage compact disc and method for manufacturing t
Optical data storage disc
Optical data storage disc having low-profile hub
Optical data storage disk