Optical filter employing holographic optical elements and...
Optical filtering device
Optical filtering device and application to a liquid crystal pro
Optical fractionation methods and apparatus
Optical head and hologram recording device including the same
Optical head for adjusting a positional relation between the inf
Optical holographic device with a hologram optical element...
Optical holographic system for parallel to serial and serial to
Optical identification element
Optical image processor
Optical image reader
Optical image scanning apparatus detecting sheet size and displa
Optical information processor employing a phase type spatial lig
Optical information recording and reproducing apparatus...
Optical information recording and reproducing apparatus...
Optical information recording and reproducing apparatus...
Optical information recording and reproducing apparatus...
Optical information recording and reproducing apparatus...
Optical informational recording/reproduction device and method
Optical interconnection arrangement