198067 ⎘
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation , reproducing using an optical beam at lower power ; Record carriers therefor; Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only Foucault or knife-edge methods
Optical pickup device and optical read/write apparatus
#2Optical pickup device and optical disc apparatus
#3Optical pickup apparatus having diffractive element for focusing and tracking plurality of light types
#4Optical pickup device and optical disc apparatus
#5Optical pickup device and optical disc apparatus using same
#6Optical pickup
#7OPTICAL HEAD DEVICE, OPTICAL INFORMATION PROCESSING APPARATUS, AND SIGNAL DETECTING METHOD
#8OPTICAL PICKUP DEVICE AND OPTICAL DISK DEVICE INCLUDING THE SAME
#9Optical pick-up and optical information recording and reproducing apparatus
#10Optical head device for detecting an error signal and an optical information recording/reproducing device
#11Optical pickup device
#12OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING OR REPRODUCING DEVICE
#13METHOD FOR CONTROLLING FOCUS LOOP OF AN OPTICAL STORAGE DEVICE
#14OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING OR REPRODUCING APPARATUS WITH THE SAME
#15OPTIMAL DETECTION OF TWODOS SIGNALS
#16Optical pickup device and optical disc apparatus
#17Optical pickup apparatus
#18Optical-integrated unit and optical pickup device used for reading and/or writing information from/onto an optical record medium
#19Holographic diffraction element and optical pickup device using holographic diffraction element
#20Optical Head Apparatus and Optical Information Recording/Reproducing Apparatus With the Same
#21Optical pickup device having three light sources with a holographic element for directing diffraction light to photodetectors
#22Laser-detector-grating-unit
#23Multi-beam optical scanning device
#24Optical head unit and optical disc apparatus
#25Optical pickup
#26Optical pickup unit and information recording/reproducing apparatus
#27Optical head unit and optical disc apparatus
#28Optical disk apparatus and an optical disk playback method
#29Optical scanning device
#30Optical head unit and optical disc apparatus
#31Optical information recording medium manfacturing method therefor, manufacturing apparatus therefor, and optical information recording and reproducing apparatus
#32Three-dimensional information recording and reading method
#33Optical pickup device
#34Light receiving and emitting integrated device, optical pickup provided therewith, and optical disk apparatus
#35Optical pickup
#36Method and apparatus for optical head and optical information reproducing
#37Holographic optical element, position shift detecting apparatus, optical pickup apparatus, optical recording medium drive and method of fabricating holographic optical element
#38Optical pickup device, optical disk drive, optical device and composite optical element
#39Optical pickup
#40Optical pickup device and optical disk device and optical device and composite optical element
#41Optical storage device, optical device and servo controlling method therefor having first and second focus error signal detectors with different detection ranges and target trajectory generator
#42Optical integrated device and optical pickup apparatus