198122 ⎘
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; Lenses Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders
Solid immersion lens, condensing lens, optical pickup device, optical recording and reproducing apparatus and method of forming solid immersion lens
#302Optical pickup device compatible with two types of optical recording media
#303Objective optical system for optical pickup apparatus, optical pickup apparatus, driving apparatus for optical information recording medium, condenser lens and optical path compounding element
#304Multi-focus objective lens, optical pickup apparatus and optical information recording reproducing apparatus
#305Optical pickup apparatus
#306Optical pickup apparatus with objective optical system and guiding optical system
#307Beam shaping device
#308Optical lens and method of producing the same, method of producing optical lens array, focus error signal production method, and optical pickup apparatus
#309Objective optical element and optical pickup apparatus
#310Optical pickup device that corrects the spot shape of reflected light beams
#311Optical recording/reproduction apparatus having mechanism for correcting spherical aberration
#312Method and apparatus for making master optical disk
#313Optical pick-up apparatus and optical information recording and/or reproducing apparatus
#314Optical head device, optical recording device, and optical recording method
#315Optical pickup device having chromatic aberration correction lens
#316Objective lens for high-density optical focusing and an optical disk in an optical pickup
#317Optical lens and method of producing the same, method of producing optical lens array, focus error signal production method, and optical pickup apparatus
#318Optical head device and optical information device using this and computer optical disk player car navigation system optical disk recorder and optical disk server using this optical information device
#319Optical pickup device with shielding to limit incident or emitted light
#320Spherical aberration compensation actuator and optical pickup system
#321Optical head device and optical information recording or reproducing apparatus
#322Recording/reproducing apparatus with optical path correction system
#323Optical pickup and disk drive unit
#324Optical disk apparatus with aberration correcting part, and optical disk
#325Optical pickup device
#326Optical head apparatus and optical information recording and reproduction apparatus
#327Optical element and optical head device using it, and optical information device using this optical head device, and computer, optical disk player, car navigation system, optical disk recorder and optical disk server using this optical information device
#328Objective optical system and optical pickup device using it
#329Optical pickup device
#330Variable focus lens
#331Optical pickup device and optical system used for the same
#332Optical pickup apparatus
#333Optical pickup apparatus
#334Integrated optical pickup and optical recording and/or reproducing apparatus using the same
#335Recording/reproducing apparatus for optical information recording medium and optical head
#336Optical pick-up device and optical information recording reproducing apparatus
#337Exposure apparatus of an optical disk master, method of exposing an optical disk master, and wavefront fluctuation correction mechanism
#338Optical head apparatus and optical information recording or reproducing apparatus
#339Optical information recording apparatus, optical information reproducing apparatus, and optical information recording/reproducing apparatus
#340Light receiving and emitting unit and optical pickup using the same
#341Optical pick-up system, optical pick-up device, and optical information recording and/or reproducing apparatus
#342Optical disc device
#343Exposure apparatus of an optical disk master, method of exposing an optical disk master and pinhole mechanism
#344Optical head and optical recording and reproducing apparatus
#345Optical disk apparatus and method for recording and reproducing an optical disk
#346Optical head apparatus and optical information processing apparatus
#347Optical disc apparatus and spherical aberration correction controlling apparatus
#348Holographic optical information recording and reproducing apparatus which parallel-translates light ray flux to correct tilt
#349Write-once optical disc, and method and apparatus for recording/reproducing management information on/from optical disc
#350Optical 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
#351Optical lens and method of producing the same, method of producing optical lens array, focus error signal production method, and optical pickup apparatus
#352Optical scanning device
#353Optical pickup device
#354Holographic information recording apparatus
#355Optical scanner with micro-optics for beam combination
#356Optical pickup device and method for controlling the same
#357Optical information processing system using optical aberrations and information medium having recording layer protected by transparent layer having thickness irregularity
#358Optical scanning device