Matches 251 - 300 out of 353 < 1 2 3 4 5 6 7 8 >
Match Document Document Title
6631227 Information recording and reproducing apparatus  
An information recording and reproducing apparatus for at least one of recording and reproducing information on a recording medium utilizing near-field light has a suspension arm and a near-field...
6625101 Apparatus for finely adjusting optical components  
An apparatus for finely adjusting an optical component is described. The apparatus may include an optic component, a substrate, and an adjuster. The adjuster may include a platform coupled to the...
6614743 Semiconductor laser device  
A semiconductor laser device includes a semiconductor laser element, a light beam branching element for branching a light beam emitted from the semiconductor laser element and reflected by an...
6614825 Monolithic VCSEL-based optical pickup and servo control device  
A VCSEL-based monolithic optical pickup system for use with optical recording media with a retaining member, a plurality of VCSELs disposed on the retaining member for emitting laser beams, a...
6611487 Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the same  
An optical head including a semiconductor laser source, a condenser lens, a photodiode for detecting a laser light emitter from said semiconductor laser source, and an optical coupler unit for...
6611383 Optical pickup apparatus having wedge-shaped beam splitter(s)  
The optical pickup includes one or more light sources and beam splitter which is placed in the light-incident path beginning from the light sources and selectively reflects or transmits the light...
6600714 Optical recording medium, optical pickup and optical recording and/or reproducing apparatus  
An optical recording medium to which light for recording and/or reproducing is emitted, comprising one or a plurality of inorganic deelectric layers provided at an incident side to which light from...
6590851 Optical pickup for recording/reproducing optical discs of multiple thicknesses  
An optical pickup including: first and second light sources for generating first and second laser beams having different wavelengths corresponding to first and second media having different...
6587421 Refractive index matching means coupled to an optical fiber for eliminating spurious light  
An optical data storage system utilizes optical fibers for transfer of information to and from storage media. The storage media comprises magneto-optical storage disks. The optical fibers are...
6582630 Method of fabricating and integrating an optical assembly into a flying head  
Several embodiments of a method for manufacturing an optical assembly for use in an optical flying head are provided. The optical assembly may include a solid immersion lens and a magnetic coil....
6580674 Phase shifter and optical head device mounted with the same  
An adhesive is coated on at least one surface of a thin film of organic material having birefringent properties and a phase-difference producing function, and a fixing substrate having transmitting...
6574182 Optical pickup compatible with a plurality of types of optical disks having different thicknesses  
In an optical pickup device ( 10 ) including a laser light source ( 1 ) and an objective lens ( 7 ), an optical device ( 6 ) is provided that transmits a laser beam of 635 nm in wavelength emitted...
6570827 OPTICAL ELEMENT FOR CORRECTION OF CHROMATIC ABERRATION, OPTICAL PICK-UP DEVICE HAVING OPTICAL ELEMENT FOR CORRECTION OF CHROMATIC ABERRATION, OPTICAL REPRODUCING DEVICE HAVING OPTICAL PICK-UP DEVICE AND OPTICAL RECORDING AND REPRODUCING DEVICE  
This invention provides an optical element for correcting a chromatic aberration corresponding to a short wavelength of a light source and further provides an optical pick-up device having the...
6563780 Compatible optical pickup for high-density recording/reproduction  
An optical pickup compatible with optical discs having different formats. A first light source emits a first light beam suitable for a first format optical disc. An objective lens is optimized for...
6563781 Optical information storage device and optical head  
It is an object of the present invention to provide an optical information storage device capable of performing stable information accessing at a high recording density, and an optical head, and...
6560040 Image pickup lens system  
An image pickup lens system according to the present invention includes a lens body having a positive power and a diaphragm which is unified with the lens body at a location between the first face...
6556532 Optical pickup device  
There can be obtained a miniaturized, 3-beam optical pickup device using a polarization separating prism of an inexpensive material and capable of reliably detecting light of a signal. The present...
6552864 Beam generation method and system  
A method and a system for generating a beam of radiation in a target plane located in a near-filed region of a radiation emitting means. A beam of radiation having a substantially plane wavefront...
6545970 Near field magneto-optical head having read and write pinhole apertures  
Disclosed is a near field optical recording head for use with light from a light source to read data from and to write data to a surface of an optical recording media. The recording head includes a...
6542315 Optical pick-up device  
An optical pick-up device includes a light emitting unit for directing a laser beam onto a storage medium; a reflecting member that reflects the laser beam emitted from the light emitting unit in a...
6538973 Variable length self-retaining optical fiber spool  
The present invention comprises a body for accommodating and optical fiber in a disk drive.
6538974 Method and system for suppressing spurious reflections  
An optical system and method for selective transmission of light between a source of light and set of storage disks along an optical path includes at least one polarization maintaining optical...
6535473 Optical heads manufacturable in wafer form  
Wafer-scale integration in gallium phosphide (GaP) is used to overcome the assembly difficulties of current optical heads, resulting in significantly improvements in optical performance as well as...
6535474 Near field optical recording/reproducing device  
High density near field optical recording/reproducing device, including a light source for emitting a bean of light, a converging lens for converging the light emitted from the light source, and a...
6529464 Low-birefringence optical fiber for use in an optical data storage system  
An optical data storage system 100 utilizes optical fibers 102 for transfer of information to and from storage media 107. The storage media 107 comprises magneto-optical storage disks. The...
6522617 Optical head with monolithic layer for optical storage  
Optical heads having a monolithic layer for interfacing storage media and methods for manufacturing such heads. In one embodiment, the substrate has first and second surfaces to define a through...
6522618 Integrated optical apparatus and associated methods  
An integrated optical apparatus includes an optically transparent substrate with a light source and a detector mounted adjacent thereto. The substrate includes an optical element in a transmit path...
6512640 Objective lens for pickup and light pickup apparatus  
An objective lens for use in an optical pickup apparatus to record or reproduce information in an optical information recording medium, comprises an aspheric surface, wherein the following...
6512732 Device for optically scanning information tracks on a plane using two subbeams  
A device for optically scanning an information plane having tracks. Radiation is supplied by a radiation source focused on the information plane by an objective system. The beam reflected by the...
6507543 Optical disk apparatus and galvano-mirror used for the same  
An optical disk apparatus includes a light source, an objective lens, a slider to hold the lens, a suspension to support the slider, a mirror located below the slider, and a seek mechanism to move...
6496452 Optical scanning with aberration correction  
An optical head scans the information layer ( 3 ) of an optical record carrier ( 1 ) by means of a radiation beam ( 13 ). Optical aberrations in the beam such as coma and spherical aberration,...
6483797 Apparatuses and methods for reading after writing in optical recording systems  
A read-after-write system for optical recording systems includes a mirror used to direct read beams to a desired position on a recording medium relative to write beams impinging on the recording...
6480455 Optical pickup device applicable to two kinds of recording media with minimized deterioration of a beam spot  
An optical pickup device shares an objective lens for two different light sources so as to handle two kinds of optical recording media, that is, a first optical recording medium and a second...
6477130 Optical pick-up apparatus  
The present invention provides a method and apparatus for utilizing light rays of differing wavelengths to read optical discs of different respective capacities. The present invention serves to...
6473383 Single source optical disc data storage system  
An optical data storage system that includes an optical source and an optical storage medium. The system includes a plurality of armatures positioned adjacent to the optical storage medium. Mounted...
6473384 Near field optical head having flexible structure  
An optical information device has a suspension arm, a moving mechanism for movably supporting the suspension arm relative to a recording medium, an optical head supported by the suspension arm...
6469819 Optical scanning device comprising an actuator for a displaceable collimator lens  
The invention relates to an optical player and an optical scanning device ( 15 ) used therein for scanning an optical information carrier ( 9 ). The scanning device comprises a radiation source (...
6466535 Method and apparatus for recording and reproducing data on and from an optical disk  
A method and apparatus for recording and reproducing data on and from an optical disk. The recording/reproducing apparatus records the data on an optical disk exhibiting a difference in an optical...
6466525 Optical disc data storage system  
An optical data storage system includes an optical disc and an armature adjacent the disc. An optical transducer mounted on the arm provides an optical beam output directed parallel to the plane of...
6459672 Optical head and optical disc device  
An optical head includes a (1) light radiating unit in which the relative positions of first and second light sources are set so that a straight line interconnecting a spot position of the laser...
6452880 Optical pickup apparatus  
An optical pickup apparatus capable of reading information from recording media of different read wavelengths, includes a light-emitter having a first light source for emitting a first laser beam...
6449235 Optical pick-up apparatus and optical recording/reproducing apparatus using the same  
An optical pickup apparatus that can adaptive for a plurality types of optical discs different in the layout condition such as a recording density, etc. and an optical recording/reproducing...
6449225 Method and apparatus for reading multiple tracks of an optical disk  
A multi-track optical disk reader is provided having an optical pickup including multiple reading beams arranged in a pattern, such that each beam is directed towards a track to be read. The...
6442123 Optical information storage device capable of giving optimum phase compensations according to recording tracks in reproducing information  
An optical information storage device for directing an incident light beam onto a recording medium having a recording surface composed of lands and grooves as tracks and detecting a reproduced...
6438088 Light transmission device and apparatus including light transmission device  
In a light transmission system for transmitting a light beam with a variation of wavelength from a light source to a light receiver, comprising, an optical element for receiving the light beam and...
6414911 Flying optical head with dynamic mirror  
A magneto-optical flying head utilizes a steerable mirror in combination with a light source and a lens to write and read data onto a magneto-optical storage disk. A beam of laser light transmitted...
6411585 Method for manufacturing optical disk, optical disk apparatus, and optical disk with using phase-shifted signal for wobbling grooves  
In an optical disk, serial data representative of positional information is preformatted by using a groove, and this groove is wobbled. When this preformatted optical disk is applied to an optical...
6411587 Optical pickup optical system, optical pickup apparatus, coupling optical system, coupling optical system lens and recording/reproduction apparatus  
An optical pickup apparatus for recording and/or reproducing information on an optical information recording medium includes a light source emitting a light flux, a light-converging optical system...
6407973 Device for scanning an optical record carrier having at least two information layers  
In a device for scanning an optical record carrier having two or more information layers, in which a diffraction element with two gratings is used in combination with a composite detection system...
6404722 Method of increasing recording density and capacity of a compact disc  
A method of increasing recording density and capacity of a compact disc. The compact disc has a transparent substrate and a data-recording region on the transparent substrate. To perform data...
Matches 251 - 300 out of 353 < 1 2 3 4 5 6 7 8 >