Optical card and a recording/reproduction apparatus for the...

Optical card and manufacturing method thereof

Optical card having light-absorbing layer

Optical card of closed type

Optical card, a card holder and an apparatus for recording,...

Optical circuit

Optical compact disc storage and loading cassette

Optical data carrier with a thermochromic layer

Optical data recording method, and data recording medium

Optical data recording/reproducing apparatus

Optical data retrieval system for multi- characteristic...

Optical data retrieval system using multi-spectral light...

Optical data storage

Optical data storage

Optical data storage card

Optical data storage device

Optical data storage disc

Optical data storage disc

Optical data storage medium

Optical data storage medium and manufacturing methods therefor