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7391704 Optical pickup device having chromatic aberration correction lens  
An optical pickup device includes a light source to emit light, an objective lens to focus the light on a recording medium to form a light spot, an optical path changer on an optical path between...
7385904 Optical pickup device  
A phase shift element has a tiered phase difference pattern portion, in which an inner circular side tiered phase difference pattern portion is continuously connected with an outer circular side...
7385741 Holographic recording system and optical chopper  
A holographic recording system with a simple structure is provided that can make a holographic recording beam follow a recording medium traveling even at high speed. The holographic recording...
7379411 Beam shaping device  
In a beam shaping device for converting the laser light emitted from a semiconductor laser light source from an elliptic beam to a circular beam, the light-entrance-side and light-exit-side...
7372785 Spherical aberration compensation actuator and optical pickup system  
A spherical aberration compensation actuator and an optical pickup system are provided. The spherical aberration compensation actuator mounts an element for compensating a spherical aberration and...
7366063 Optical discs for measuring analytes  
This invention directs to an optical disc assembly configured to receive an analyte which can be detected by a standard optical disc reader or an optical disc reader modified therefrom. The optical...
7366062 Optical head disk device  
The optical head device for carrying recording/reproducing of data by irradiating a recording face of an optical disk with a laser beam, includes a base frame provided with an optical system for...
7362689 Optical pickup and optical recording and/or reproducing apparatus adopting the same  
An optical pickup which, when a first light reflected by a recording medium is divided into a central light area and first and second peripheral light areas at both sides of the central light area,...
7362688 Optical scanning device  
An optical scanning device for scanning first and second type of record carriers includes a radiation-generating device for generating a radiation beam having first and second wavelengths in the...
7359307 Catadioptric objective system and objective system  
A catadioptric objective system used for storage and/or reproduction of information by use of an optical near field. The catadioptric objective system is composed of a catadioptric objective lens...
7355945 Optical pickup adjusting apparatus and adjusting method  
An adjustment apparatus for adjusting an optical pickup capable of recording and/or reproducing optical discs of different sorts. The adjustment apparatus is an adjustment optical disc having a...
7355798 Optical system for collimating elliptical light beam and optical device using the same  
An optical system ( 20 ) for efficiently collimating an elliptical light beam includes a light source ( 21 ), a collimator ( 22 ), and at least one prism ( 23,24 ). The light source is adapted for...
7352678 Laminated wave plate and optical pickup using the same  
A conventional broadband quarter-wave plate has not completely solved the wavelength dependence and has different efficiencies of shifting the phase by 90 ° depending on the wavelengths, and...
7352517 Optical pickup apparatus  
An optical pickup apparatus for conducting at least recording or reproducing of information on two types of optical information recording media having protective substrates with different...
7345829 Objective lens  
Lens aberration in an objective lens for recording and reproducing optical information, which is composed of a molded aspherical single lens, is inhibited while at the same time good lens...
7342867 Optical head device, optical recording device, and optical recording method  
An object of the present invention is to acquire optimum recording characteristics of an optical recoding medium having multiple data layers, with respect to each of the multiple data layers...
7339876 Optical system of optical pick-up  
There is provided an optical system of an optical pick-up for recording/reproducing data to/from at least two types of optical discs including a first optical disc and a second optical disc whose...
7336587 Optical pickup head compatible with multiple optical recording media  
An optical pickup head compatible with multiple optical recording media includes three light sources, a prism unit disposed beside the light sources, a reflective multi-surface prism disposed...
7336566 Method and apparatus for track type identification, and method of track jump  
The track jumping of a scanner on optical storage media in which information items are stored on groove and land tracks or which have not yet been written to is intended to be made possible in a...
7330418 Optical disk with plural signal mark positions in a direction substantially perpendicular to tracks  
An optical disk device has a light source which emits light; and light converging means of, in each of signal mark forming regions, each of lands, or each of grooves of an optical disk, converging...
7324424 Compatible optical pickup having diffractive device to correct chromatism and divergent lens to increase working distance  
A compatible optical pickup includes an optical disc, an objective lens, a diffractive device, and a divergent lens. The optical unit emits a short wavelength light beam corresponding to a high...
7319655 Diffractive optical element, objective optical system, optical pick-up device and optical information recording reproducing apparatus  
A diffractive optical element, comprises a first diffractive structure to generate n 11 -th order diffracted ray when a first light flux having λ1 (nm) of a wavelength comes in and to generate n...
7317677 Semiconductor laser light source device and optical pickup device  
An semiconductor laser light source apparatus includes: a semiconductor laser oscillator for emitting a laser beam; and a lens for transmitting the laser beam emitted by the semiconductor laser...
7315504 Optical pickup apparatus and manufacturing method thereof  
A front monitor-type optical pickup apparatus is composed of a window 10 w for taking in a laser light beam, and a housing 10 for housing a front monitor detector 9 so as to face the window ...
7315490 Optical pickup apparatus  
The apparatus has a lens supporting unit which supports one side of a lens holder holding one lens forming a part of an expander lens with a plurality of plate springs, a lens driving unit which...
7307940 Optical pick-up device  
It is an object of the present invention to provide an optical pick-up device capable of being miniaturized by reducing the number of components. The present invention provides an optical pick-up...
7307927 Optical disk apparatus and method for recording and reproducing an optical disk  
A method and an optical disk apparatus that can accurately and stably correct the spherical aberration even for a blank write-once optical disk and can detect a spherical aberration error signal...
7301864 Objective lens, optical pick-up device, and optical disk device  
To provide an optical pickup device and optical disk device capable of realizing at least one of thickness reduction, size reduction and suppression against characteristic deterioration even where...
7298687 Optical recording media objective lens and optical pickup device using it  
An optical recording media objective lens is disclosed for converging either of two working lights of a first wavelength or a second wavelength. The working light of the first wavelength is...
7295504 Beam shaping element, and light source unit and optical pickup using same  
A beam shaping element includes a set of diffraction gratings on each surface thereof, in such a manner that intervals between the gratings farer from a vicinity of an optical axis and nearer to a...
7292516 Sensor optimized for phase detection in page-based optical data storage  
A system for phase detection in page-based optical data storage involves a number of features that may be used individually or in combination to provide optimizations and to facilitate the...
7289416 Optical pickup and optical disk apparatus  
An optical pickup for performing data recording and reproduction with respect to both CDs and DVDs and a disk apparatus incorporating the optical pickup. The optical pickup comprises a CD laser...
7283458 Optical information recording medium, and method and device for optical information recording/reproduction using same  
A recording layer ( 2 ) and a light-transmitting layer ( 3 ) are provided on a substrate ( 1 ) having a guide groove for tracking a light beam projected in a spot for information...
7283449 Beam splitting system and optical information read/write device  
A light beam splitting element that splits a beam incident on a beam receiving surface into a plurality of beams. The beam receiving surface has at least one predetermined area that directs a...
7283448 Integrated optical pickup and method of manufacturing the same and optical information storage system including the optical pickup  
An integrated optical pickup and a manufacturing method thereof, and an optical information storage system including the pickup. The integrated optical pickup includes a light source; a main...
7283434 Optical pickup device capable of correcting spherical aberration  
A mirror actuator includes a piezoelectric element having a thickness in a direction perpendicular to a surface of the mirror, and a circular surface bonded to a circular rear surface of the mirror...
7282684 Optical pickup apparatus  
An optical pickup apparatus is provided with a light source device to emit selectively an ordinary polarized light ray and an extraordinary polarized light ray by controlling a polarization...
7280445 Optical pick-up  
A finite optical system that a laser beam from a light source is allowed to be directly incident on an objective lens without passing a collimate lens is employed. The reference position of the...
7277619 Nano-imprinted photonic crystal waveguide  
This invention relates to a method for forming a nano-imprinted photonic crystal waveguide, comprising the steps of: preparing an optical film on a substrate; preparing a template having a...
7277372 Method and apparatus for recognizing optical discs, optical disc drive, and method and apparatus for distinguishing data storage layer  
A method for recognizing at least two types of optical discs, which are associated with multiple different numerical apertures, includes the step of setting the numerical aperture of a focusing...
7269120 Optical pickup  
An optical pickup includes a radiating plate made to abut against a rear surface of a laser diode by positioning an engaging hole provided penetratingly in a central portion of the radiating plate...
7269119 Optical pick-up apparatus  
An optical pick-up apparatus comprising: first, second and third light sources for recording and/or reproducing respectively first, second and third optical information recording material; an...
7265883 Optical scanner with micro-optics for beam combination  
An optical scanner having a micro-optical element for combining two light beams is disclosed. The optical scanner has a micro-optical element including two parts, which serves to combine two light...
7245570 Information recording method and information recording apparatus  
In an optical recording medium having two information recording layers, a highly reliable recording can be conducted in one of the recording layers in the back regardless of the recording state of...
7242659 Optical pickup for detecting thickness variation of a recording medium, and/or compensating for spherical aberration caused by thickness variation of a recording medium  
An optical pickup for a recording medium includes a light beam division and detection unit including receiving portions dividing an incident light beam reflected on the recording medium into a...
7239595 Spherical aberration correction control device and optical disc apparatus  
A spherical aberration correction control device for controlling a spherical aberration correction section for correcting a spherical aberration of an optical beam irradiating an optical disc. The...
7236443 Optical scanning device having less response to stray reflections that information layer reflections  
An optical scanning device incorporating a compound objective lens 10 and a radiaion detector 31 is described for reading an optical record carrier 1 in which the optical record carrier 1 ...
7236442 Holographic recording/reproducing apparatus and reproducing apparatus for holographically recorded information  
A holographic recording/reproducing apparatus includes a splitter unit for splitting a laser beam into a first laser beam for generating a signal beam and a second laser beam which serves as a...
7236313 Ring zonal phase correction lens and optical system and optical head device  
A ring zonal phase correction lens made of resin is provided with a refraction face structurally formed on at least one of a first lens face and a second lens face. The refraction face includes...
7230905 Optical pickup using two-wavelength light source module and method for correcting position difference  
An optical pickup includes a light source module in which first and second light sources that emit first and second light beams of different wavelengths are integrated into a single package, an...
Matches 1 - 50 out of 295 1 2 3 4 5 6 >