Optical apparatus having reflecting porton split by an edge
Optical apparatus with laser light receiver and focus error...
Optical assembly comprising a holder and an optical element, and
Optical axis monitoring device
Optical beam shaping system
Optical beam-splitting element
Optical characteristics switching mechanism optical head and opt
Optical component
Optical data reading apparatus and an optical data reading metho
Optical data reading apparatus and method
Optical data reading/writing with stationary dish mirror
Optical data readout with two beams on three tracks
Optical data recording and reproducing apparatus
Optical data recording and reproducing apparatus including chrom
Optical data recording and reproducing system with control of hi
Optical data recording device
Optical data recording using radiation of different characterist
Optical data recording/reproducing apparatus
Optical data recording/reproducing apparatus including device fo
Optical data recording/reproducing apparatus with optical irradi