198128 ⎘
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; Heads, e.g. forming of the optical beam spot or modulation of the optical beam; Means for guiding the beam from the source to the record carrier or from the record carrier to the detector; Means for controlling the beam wavefront, e.g. for correction of aberration passive
Refracting objective optical system and optical recording/reproducing device using the same
#302Optical pickup device compatible with two types of optical recording media
#303Multi-focus objective lens, optical pickup apparatus and optical information recording reproducing apparatus
#304Phase correction element and optical head device
#305Optical system for optical pickup device, coupling lens and optical information recording/reproducing apparatus
#306Objective lens and optical pickup apparatus
#307Optical scanning device
#308Optical element and optical pickup device having the same
#309Beam shaping device
#310Objective optical system of optical pick up, optical pick-up device and optical information recording/reproducing apparatus
#311Optical scanning device including a tilt tolerant objective system
#312Objective optical element and optical pickup apparatus
#313Objective optical element and optical pickup apparatus
#314Object lens producing device and producing method
#315Optical head device
#316Objective optical system, optical pickup apparatus and optical information recording and reproducing apparatus
#317Objective optical system, optical pickup apparatus and optical information recording/reproducing apparatus with diffraction structure and optical path difference-generating structure
#318Method and apparatus for optical head and optical information reproducing
#319Optical pick-up apparatus and optical information recording and/or reproducing apparatus
#320Optical pickup apparatus
#321Collimator optical system and optical information storage device
#322Hybrid lens array and method of fabricating the same
#323Optical pickup device having chromatic aberration correction lens
#324Diffractive optical element and optical pickup apparatus
#325Optical pickup and recording/reproducing apparatus
#326Optical pickup device and diffractive optical element
#327Objective lens for optical disc
#328Objective lens, optical pickup apparatus and optical information recording and reproducing apparatus
#329Objective optical system for optical recording media and optical pickup device using it
#330Optical pickup device
#331Diffractive optical element, objective optical system, optical pick-up device and optical information recording reproducing apparatus
#332Optical pickup device
#333Objective lens element for optical disks and optical head device incorporating the same
#334Optical pickup device and optical system used for the same
#335Optical pickup device and correcting element used in the optical pickup device
#336Optical pick-up apparatus and divergent angle-converting element
#337Optical element, optical pickup device and optical information recording and reproducing apparatus
#338Objective lens for scanning optical disks (DVDS)
#339Bit-wise optical data storage utilizing aluminum oxide single crystal medium
#340Objective lens design method, lens, and optical system, optical head, and optical disc apparatus using the same
#341Objective optical system and optical pickup device using it
#342Diffractive optical element and optical pickup apparatus
#343Optical pickup apparatus, optical element for optical pickup apparatus and producing method of optical element
#344Optical head and optical recording and reproducing apparatus
#345Optical pickup apparatus, optical data recording/reproducing apparatus, and optical data recording/reproducing method
#346Optical pickup using a wedge type beam splitter
#347Optical head apparatus and optical information processing apparatus
#348Optical pickup device
#349Optical pickup with reduced size
#350Objective lens
#351Objective lens for optical recording media and optical pickup device using it
#352Optical head apparatus
#353Write-once optical disc, and method and apparatus for recording/reproducing management information on/from optical disc
#354Optical pickup and optical data processing apparatus
#355Objective lens, optical, pickup and optical information processing apparatus using the same
#356Objective lens for optical disk
#357Optical recording and pickup head for digital versatile disc compatible with read-writable compact disc by adopting flat plate lens having staircase type diffraction grating structure
#358Multi-wavelength lens, and optical system, optical head and optical disc apparatus using the lens
#359Optical lens and information recording and reproducing device
#360Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses