Optical element, optical pickup, and optical information recording/reproducing apparatus

Optical pickup for a disk apparatus

Optical pickup apparatus which records and/or reproduces information using different types of optical information recording mediums

Diffraction grating and optical pickup device

Optical tape drive systems

Optical record carrier scanning device

Beam spot position control device and beam spot position control method, and optical disk recording and reproducing device

Optical pickup and optical disc apparatus

Optical Device For Recording And Reproducing

OPTICAL-PICKUP HEAD DEVICE, AND METHOD AND APPARATUS FOR REPRODUCING OPTICAL STORAGE MEDIUM

Optical pick-up head, optical information apparatus, and optical information reproducing method

Optical pick-up head, optical information apparatus, and optical information reproducing method

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

Optical pickup device having three light sources with a holographic element for directing diffraction light to photodetectors

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

Optical information device and information recording and reproduction device

Optical device and optical pickup device

Optical pickup device, recording and reproducing apparatus and gap detection method

Optical element having aberration correction and optical pickup and optical information recording and/or reproducing apparatus equipped therewith

Optical pickup device

Liquid crystal lens element and optical head device

Optical pickup device

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

Liquid crystal diffraction lens element and optical head device

Optical element

Optical head

Optical pickup device capable of loosening assembly accuracy

Optical pickup apparatus with temperature compensation

Optical Pick-up Apparatus

Optical pickup and disc drive apparatus

Optical pickup apparatus and optical disk apparatus

Optical reader/writer with dedicated focus tracking beam

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

Optical recording/reproducing apparatus, optical pickup, and tracking error detecting method

Optical pickup and optical information apparatus

Objective optical element and optical pickup apparatus

Optical pickup apparatus

Optical pickup, optical disc apparatus, and radial tilt detection method

Method and apparatus for measuring interfacial positions, method and apparatus for measuring layer thickness, and method and apparatus for manufacturing optical discs

Method and apparatus for multiplexing optical information for recording and reproducing optical information over optical storage medium

Optical pickup device and optical disk drive

Laser-detector-grating-unit

Optical pickup device and optical element used for the same

Optical pickup and optical disc apparatus including a multi-section diffractive element

Optical pickup apparatus

Liquid crystal lens element optical head device

Optical recording medium driving device

Holographic recording method, apparatus therefor, and holographic recording and reproducing apparatus

Method and apparatus capable of detecting spherical aberration caused by a storage medium

Optical pickup device with diffraction patterns on object lens

Optical device and optical pickup device

Optical head apparatus and optical information recording and reproduction apparatus

Optical pickup device

Optical pickup device

Optical pickup device

Optical pickup, optical recording and reproducing apparatus and tracking error signal detecting method

Optical pickup

Optical head apparatus and optical information recording and reproduction apparatus

Optical systems including a chromatic diffractive optical element corrector and associated methods

Optical pickup apparatus

Forming methods, forming devices for articles having a micro-sized shape and optical elements

Optical pickup and disc drive apparatus

Optical pickup apparatus

Optical pickup device

OPTICAL RECORDING DISK APPARATUS

OPTICAL HEAD UNIT AND OPTICAL DISC APPARATUS

Optical pickup device and optical disk drive

Optical head device and optical information apparatus using this optical head device, and computer, optical disk player, car navigation system, optical disk recorder and optical disk server using this optical information apparatus

Integrated optical unit, adjusting method therefor, and optical pickup

Optical pickup

System for shifting at least one light spot

Optical pick-up apparatus for multi recording/reproducing

Objective lens unit and optical pickup device

Optical pickup device and optical disk drive using the same

Semiconductor laser apparatus, optical pick-up and optical information apparatus

Optical head unit and optical disc apparatus

Lens having fresnel lens surface(s) and lighting apparatus using it

Compatible optical pickup and optical recording and/or reproducing apparatus employing the same

Optical pickup device and optical disk apparatus

Optical pickup

Optical pickup device recording and/or reproducing information on and/or from a plurality of kinds of recording media

Optical pickup apparatus

Optical pickup apparatus and information recording and reproducing apparatus

Optical head and optical disc device provided therewith

Compatible optical pickup and an optical recording and/or reproducing apparatus employing a compatible optical pickup

Disc-driving apparatus and method for controlling the same

Optical pickup apparatus capable of detecting and compensating for spherical aberration caused by thickness variation of recording layer

Method and unit for separating light and optical pickup device and optical recording/playback apparatus based thereon

Optical pickup and optical disc apparatus

Optical pickup

Optical pickup and optical information processing apparatus with light sources of three different wavelengths

Optical pickup apparatus

Optical head and information recording/reproducing apparatus

Optical pickup and optical recording and/or reproducing apparatus employing the same

Objective optical system for optical recording media and optical pickup device using it

Photodetector, diffraction grating, optical pickup and optical disc apparatus

Active compensation device, and compatible optical pickup and optical recording and/or reproducing apparatus employing the active compensation device

Multifocal lens and method for manufacturing the same

Optical head device

Laser converging apparatus, optical pickup device and optical disc recording/reproduction apparatus

Optical head and optical disc apparatus

Diffraction grating, method of fabricating diffraction optical element, optical pickup device, and optical disk drive

Optical element, optical pickup device, and optical information recording and/or reproducing apparatus

Optical semiconductor device and method of manufacture thereof

Objective optical system and optical pickup apparatus

Optical pickup

Liquid crystal lens element and optical head device

Optical element and optical pickup apparatus

Diffraction element and optical disk device

Integrated type optical head with sheet waveguide and light coupler

Optical diffraction element

Polarizing element and optical system including polarizing element

Optical-path compensating device and optical pickup using the device

Optical recording/reproducing apparatus capable of recording/reproducing information onto/from various types of optical recording media of different recording densities and different thicknesses

Optical integrated unit and optical pickup

Optical pickup unit and information recording/reproducing apparatus

Diffraction grating, method of fabricating diffraction optical element, optical pickup device, and optical disk drive

Semiconductor laser device and optical pickup apparatus having the device

Optical head unit and optical disc apparatus

Objective lens and optical pickup apparatus using the same

Optical head, light-emitting/receiving device, and apparatus for recording/reproducing optical recording/recorded medium

Splitting element, light emitter, and optical pickup apparatus

Optical reproducing apparatus capable of using laser diode of two wavelengths

Optical element, optical pickup device comprising the same, and unnecessary light elimination method

Apparatus for reading from and/or writing to optical recording media

Optical pickup apparatus and optical element

Optical pickup apparatus and optical element

Optical recording and reproducing apparatus, optical head, optical recording and reproducing method and skew detection method

Optical diffraction device and optical information processing device

Optical pickup apparatus

Optical head and information recording/reproducing apparatus

Polarizing diffraction element and optical head device

Optical pickup apparatus

Method and apparatus for creating a multi-dimensional data signal

Optical head with spherical aberration correction and method of using same

Optical head device and optical information apparatus using the same

Optical pickup unit and information recording apparatus using the same

Aberration detection device and optical pickup device provided with same

Optical disk apparatus compatible with different types of mediums adapted for different wavelengths

Optical pickup, optical recording and/or reproducing apparatus using the same, and method for detecting tracking error signal

Optical disk apparatus and an optical disk playback method

Optical head and optical disc apparatus

Diffraction element and optical disk device

Optical semiconductor device

Optical head device and optical information apparatus using the same

Optical pickup device and optical disk drive using the same

Focus servo apparatus

Optical pickup apparatus and objective optical unit

Apparatus for reading/writing an optical storage carrier

Optical recording medium driving device

Optical head unit and optical disc apparatus

Diffraction element and optical head device

Optical head unit and optical disc apparatus

Optical head unit and optical disc apparatus

Diffraction grating, optical pickup device, and optical disk apparatus

Diffraction grating, light-receiving element, and optical head and optical recording/reproducing apparatus utilizing them

Optical recording apparatus and optical recording/reproducing apparatus

Optical pickup unit and information recording/reproduction apparatus

Information recording and reproducing apparatus and method for controlling positions of optical pickup device and objective lens used for the apparatus

Multi-dimensional data signal and systems for manipulating the same

Optical disc device

Lens holder assembly of optical pickup and method of producing same

Objective, optical pickup apparatus and optical information recording and/or reproducing apparatus

Diffractive element, method of manufacturing the same, optical pickup device, and optical disc apparatus

Method for optical recording, method for optical reproducing, optical recording medium, and optical recording and reproducing apparatus utilizing holography

Objective lens and optical pickup device

Optical pickup which is compatible with multiple types of media

Optical pickup apparatus with bilaterally divided light beams

Optical scanning device

Optical pickup lens device and information recording and reproducing device using the same

Optical pickup lens device and information recording and reproducing device using the same

Optical pick-up device

Diffraction element and optical pick-up apparatus having the same

Diffraction element and optical pick-up apparatus having the same

Converging optical apparatus, optical pickup and optical disc apparatus

Diffraction element and optical pick-up apparatus having the same

Diffractive optical element, objective lens module, optical pickup, and optical information recording and reproducing apparatus

Optical pickup apparatus for recording or reproducing information for an optical information recording medium and objective lens for optical pickup apparatus

Optical pickup device

Optical information processing apparatus

Optical recording using a waveguide structure and a phase change medium

Optical pickup device

Optical pickup head and information recording and/or reproducing device incorporating same

Objective lens system and optical pickup apparatus using the same

Diffraction element and optical pick-up apparatus having the same

Optical head device and method for correcting spherical aberration

Optical pickup device and optical element

Optical pickup apparatus

Laser light source device, hologram apparatus, and method for detecting laser light

Optical pick-up apparatus and method for multi-optical disk type recording/reproducing

Optical pickup apparatus employing a grating and a hologram that generate multiple beams detected by a photodetector

Optical pickup head and information recording and/or reproducing device incorporating same

Optical head and optical device provided with optical head

Optical pickup device

Diffractive optical element and optical pickup device using the same

Optical pick-up apparatus

Objective optical system and optical pick up apparatus

Objective lens, optical pickup apparatus and optical disc driving apparatus

Disc drive for an optical scanning device

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

Collimator optical system and optical information storage device

Optical pickup device and optical disk device having a diffraction element so that a first light beam and a second light beam comport with each other

Optical pickup device

Information reproduction apparatus

Compatible optical pickup using light sources following a common optical path

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

Optical pickup apparatus and optical disk apparatus

Manufacturing method of pickup device

Optical scanning device

Objective optical system for optical recording media, optical pickup optical system, and optical pickup device using the optical pickup optical system

Optical pickup device

Optical pickup

Optical information recording device for detecting information during recording and method therefor

Objective lens element and optical pickup device provided with its object lens element

Optical head with light sources of different wavelength

Optical pickup device

Multi-level and gray-level diffraction gratings

Lens unit for optical pick-up apparatus and optical pick-up apparatus

Optical disk apparatus using mechanism for controlling spherical aberration

Object lens unit and optical pickup device employing the unit

Hologram element, production method thereof, and optical header

Optical system having element for correcting aberration of mirror and optical pickup apparatus employing the same

Hologram laser unit and optical pickup apparatus

Objective lens, light converging optical system, optical pickup apparatus, and recording/reproducing apparatus

Optical pickup using an optical phase plate and which is compatible with optical recording media of different types

Diffraction element and optical head device

Optical pickup device and optical disk device

Optical pickup having a plurality of photodetectors divided into four regions used to obtain both focus and tracking error signals

Semiconductor laser device and optical pickup device

Optical pickup device and optical disk device

Optical disk recording device and pickup device

Optical disc apparatus

Optical pickup device

Focus error detecting device and optical pickup apparatus provided with the same

Light focusing optical system, optical pickup device and optical recording and reproducing device using the same, as well as light focusing method

Objective optical element and optical pickup apparatus

Optical disk device with photodetector

Optical element, method for manufacturing such an element and a method for aligning a light beam and such an element

Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method

Optical information recording device

Optical pickup and disc drive apparatus

Optical pickup

Optical attenuator and optical head device

Method and apparatus for reproducing data of super resolution information storage medium

Objective lens and optical pickup apparatus

Optical disc apparatus

Optical scanning device with tilt detection

Converging optical element and optical pickup apparatus

Optical pickup apparatus and optical disc apparatus

Optical pick-up apparatus

Light receiving and emitting integrated device, optical pickup provided therewith, and optical disk apparatus

Optical pickup lens device and information recording and reproducing device using the same

Optical head device and optical information recording or reproducing device

Optical pickup apparatus and method to reproduce information onto and from discs having different thicknesses and storage capacities

Optical head and optical information apparatus for recording or reproducing information on an information recording medium

Optical head device and optical information recording or reproducing device

Objective lens and optical pickup apparatus

Optical head device

Optical pickup unit requiring no phase adjustment

Optical pick-up system for use in an optical disk device including use of improved gratings with more efficient beam diffraction

Integrated type light-emitting and light-receiving element, optical pickup device for optical information medium and optical disc apparatus

Objective optical system, optical pickup apparatus and optical disk drive apparatus

Objective optical element and optical pickup apparatus

Integrated optical system and method of manufacturing the same and information recording and/or reproducing apparatus using the integrated optical system

Optical pickup device, optical recording and reproducing apparatus and gap detection method

Hologram device

Object lens for optical pickup device, optical pickup device and optical information recording/reproducing device

Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method

Optical information processing device and recording medium

Parallel recording and reading of diffractive memory using multiple object beams

Optical pickup device capable of handling a plurality of laser light beams having different wavelengths

Complex objective lens, optical head, optical information apparatus, computer, optical disk player, car navigation system, optical disk recorder, and optical disk server

Optical pickup apparatus

Holographic ROM reader having servo control

Optical element, objective optical system, optical pick-up apparatus, and drive apparatus of optical disk

Optical pickup including plural light sources and recording and/or reproducing apparatus for an optical recording medium

Optical pickup apparatus and optical disc drive

Optical disk apparatus with a wavelength plate having a two-dimensional array of birefringent regions

Optical element, optical head, optical information recording/reproduction device, computer, video recording device, video reproduction device, server, and car navigation system

Optical pickup device and optical element

Objective lens comprising a diffraction structure for distributing light in to light of different diffraction orders, optical pickup device, and optical information recording or reproduction apparatus having same

Laser/detector device for optical recording with adjustable detector position

Optical pickup device compatible with two types of optical recording media

Hologram recording/reproducing method and hologram recording/reproducing device

Multi-focus objective lens, optical pickup apparatus and optical information recording reproducing apparatus

Phase correction element and optical head device

Optical disc drive apparatus, information reproducing or recording method

Device for reading from and/or writing to optical recording media

Optical pickup apparatus with objective optical system and guiding optical system

Objective lens and optical pickup apparatus

Double-wavelength light source unit and optical head device having four diffraction gratings

Objective optical element and optical pickup apparatus

Objective optical element and optical pickup apparatus

Optical pickup device that corrects the spot shape of reflected light beams

Optical head device

Lens having Fresnel lens surface(s) and lighting apparatus using it

Optical pick-up head, optical information apparatus, and optical information reproducing method

Optical pickup device for optical disks having different track pitches