Optical device of scanner

Optical device, adjustment method for the same and image...

Optical disc access control apparatus

Optical disc playback device having uniform frame interval track

Optical disc reader having diffraction minima at non-interrogate

Optical disc recording apparatus for a color television signal

Optical disc reproducing apparatus

Optical disc reproducing apparatus having displayed mode control

Optical disc reproducing apparatus having displaying made contro

Optical disc reproducing apparatus having speed-change reproduct

Optical disc with pregrooves and recording method and apparatus

Optical disk apparatus compatible with different television syst

Optical disk apparatus for selectively recording and reproducing

Optical disk apparatus for selectively recording and reproducing

Optical disk reader with means for correcting errors due to ecce

Optical disk reproducing apparatus having selectable processing

Optical document reader

Optical encoder

Optical encoding of imaging data

Optical fiber amplifier and an optical communication system usin