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US20130182547 |
OPTICAL DISK DEVICE AND OPTICAL PICKUP THEREFOR
When an optical pickup used for an optical disk device is formed, the optical pickup includes a stepping motor which drives a lens used to correct for spherical aberration, and the stepping motor... |
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US20050083823 |
Emitted-light checking apparatus for optical pickup
An emitted-light checking apparatus receives laser beam which has been emitted from a laser diode of an optical pickup subject to check. The laser beam travels through a cylindrical lens provided... |
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US20070242574 |
Apparatus for optical pick-up
An apparatus for optical pickup is disclosed which minimizes offset element occurring between the recorded and non-recorded pattern when object lenses are configured off-axis along the tracks on... |
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US20090010113 |
Optical pickup and optical pickup aberration correcting method
An optical pickup includes: a spherical aberration correcting portion for correcting spherical aberration by adjusting a convergence/divergence state of laser light emitted from a light source; a... |
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US20050195706 |
Optical pickup device for optical disks having different track pitches
Disclosed herein is an optical pickup device for optical disks having different track pitches. The optical pickup device performs tracking servo follow-up using the diffraction patterns of the... |
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US20070147196 |
OPTICAL INFORMATION PROCESSING DEVICE
An optical information processing device, configured to perform operations of reading and writing information on an optical disk, includes a light source configured to emit a laser beam, an image... |
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US20080279057 |
ASSEMBLING METHOD FOR OPTICAL SYSTEM OF OPTICAL PICK-UP
There is provided an assembling method for expanding a maximum admissible astigmatism of objective lens which includes defining a maximum admissible astigmatism for the entire optical system,... |
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US20060181971 |
Optical disk drive and optical pickup
In an optical disk drive mounting a drive unit 20 having a control use circuit 21, and a pickup 1 having an aberration correction liquid crystal element 13 and a drive use circuit 2 which drives... |
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US20060140071 |
Objective lens optical part for optical pickup device and focusing method using the same
The present invention relates to an objective lens optical part for an optical pickup device and a focusing method using the same. The focusing method at least includes the steps of providing a... |
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US20070165500 |
Optical pickup, optical disc drive employing it, and its control method
The present invention is directed to an optical pick-up device in which two object lenses are mounted to optimally correct comatic aberration with respect to the respective object lenses, which... |
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US20090109808 |
OPTICAL HEAD DEVICE AND INFORMATION
According to one embodiment, a laser drive circuit which supplies a drive current to a laser element which outputs light at a predetermined wavelength, and a laser control circuit which supplies a... |
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US20080062826 |
Optical Pickup Unit and Optical Pickup Device Having Same and Information Writing/Reading Device Having Same
An optical pickup device includes: a splitting section for splitting a beam; a light-receiving section for receiving the split beams. The light-receiving section includes: a tracking-use main... |
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US20080094950 |
OPTICAL PICKUP APPARATUS, METHOD OF PRODUCING THE SAME, AND OPTICAL INFORMATION RECORDER-REPRODUCER INCLUDING THE SAME
In an optical pickup apparatus of the present invention, an integrated optical unit including at least a light emitting element, a light receiving element, and an optical element is installed on a... |
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US20070076541 |
AUTOFOCUS IMAGING OPTICAL SYSTEM AND IMAGE PICKUP DEVICE
An image pickup device in which reflectance in a central portion of the splitting optical system is configured large and that in a peripheral portion is configured small, to thereby selectively... |
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US20090168614 |
SPHERICAL ABERRATION CORRECTION APPARATUS AND SPHERICAL ABERRATION CORRECTION METHOD
According to one embodiment, a spherical aberration correction apparatus includes a pickup which applies laser light to an optical disk through an objective lens, a photodetector which detects... |
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US20070268794 |
Beam splitter configuration
A beam splitter configuration includes at least one beam splitting system for splitting a light beam into a number of partial beams. The beam splitting system includes at least one first and at... |
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US20070121469 |
HOLOGRAPHIC OPTICAL PICKUP APPARATUS
Provided is a holographic optical pickup apparatus which can be reduced in thickness and production cost while having a beam shaping unit. To be specific, in a holographic optical pickup apparatus... |
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US20090231965 |
Method for setting spherical aberration correction and device using the method
A method for setting the spherical aberration correction of a scanning beam in a device for scanning an information layer of an optical record carrier. The method comprises the following steps:... |
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US20080175108 |
OPTICAL INFORMATION STORAGE MEDIUM SYSTEM AND METHOD OF GENERATING TRACKING ERROR SIGNAL
An optical information storage medium system includes an optical pick-up to detect a main push-pull signal and a sub-push pull signal, and a signal operating unit including first and second... |
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US20080049568 |
Aberration correction element, optical pickup and optical disc apparatus
An aberration correction element includes a support substrate, a plurality of piezoelectric elements disposed on the support substrate, each of which is made up of a piezoelectric member and... |
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US20080175109 |
Phase shift grating for phase shift differential push-pull tracking
The present invention relates to a phase shift grating for phase shift differential push-pull tracking, and to an apparatus for reading from and/or writing to optical recording media using such a... |
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US20090323480 |
OPTICAL STORAGE SYSTEM AND SPHERICAL ABERRATION COMPENSATION APPARATUS AND METHOD THEREOF
An optical storage system and a spherical aberration (SA) compensation apparatus and method thereof are provided. The SA compensation apparatus includes a microprocessor and a... |
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US20060077791 |
Objective lens element and optical pickup device provided with its object lens element
An optical pickup device has an optical source 101 for emitting an optical beam, an objective lens element 103 positioned to receive the optical beam for focusing the beam on a medium 104, wherein... |
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US20050122856 |
Optical head device having deformable reflecting mirror
In a mirror unit, for the purpose of correcting spherical aberration, a reflecting mirror is changed in form by a piezoelectric film to adjust a degree of parallelism of a reflected light. To... |
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US20080002536 |
Optical pickup and optical recording or reproducing apparatus
An optical pickup and optical recording or reproducing apparatus incorporating such an optical pickup is recommended, which comprises an adjustment means to adjust the actuator plate of the... |
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US20050265201 |
Integrated type light-emitting and light-receiving element, optical pickup device for optical information medium and optical disc apparatus
An integrated type light-emitting and light-receiving element includes a polarizing hologram and this polarizing hologram introduces returned light into a second photo-detecting unit for detecting... |
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US20070189130 |
Optical information device and information recording and reproduction device
Stable tracking control is achieved for an optical recording medium having a plurality of information recording planes. To achieve this, an optical information device comprises a light source for... |
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US20090238048 |
METHOD AND APPARATUS FOR COMPENSATING ASTIGMATISM IN AN OPTICAL STORAGE SYSTEM
The present invention discloses a method and an apparatus for compensating astigmatism in an optical storage system. Firstly, the optical storage system focuses on an optical disc and proceeds... |
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US20070019515 |
Optical writing device, optical writing method, and image forming apparatus
A device, apparatus, method, computer program and product, each capable of controlling the intensity or duration of a light beam in a detection area of an optical writing device. The intensity of... |
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US20080159090 |
OPTICAL PICKUP AND DISK DRIVE DEVICE
Disclosed is an optical pickup including: an actuator supporting a lens holder holding an objective lens and a yoke base including a predetermined insert and holding a magnet for driving... |
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US20090290456 |
OPTICAL DISC DEVICE, METHOD FOR ACTIVATING OPTICAL DISC DEVICE, AND CONTROL CIRCUIT
An optical disc device includes: a light source; a condensing system including a solid immersion lens for emitting light from the light source onto an optical disc; a gap control circuit for... |
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US20090073824 |
Optical Disc Drive
An optical disk apparatus according to the present invention includes: a light emission section for emitting laser light; an optical system for irradiating the optical disk medium with the laser... |
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US20090080298 |
OPTICAL HEAD, OPTICAL HEAD MANUFACTURING METHOD AND OPTICAL DISC DEVICE
It is aimed to provide an optical head, an optical head manufacturing method and an optical disc device capable of correcting coma aberration generated due to different positions of emission... |
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US20080013414 |
Optical Head For Optical Recorder/Reproducer
An optical head for recording or reproducing a signal on or from an optical recording medium comprising a light source, an objective lens for condensing light emitted from the light source to the... |
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US20080304375 |
OPTICAL DISC APPARATUS AND OFFSET ADJUSTMENT METHOD THEREOF
An optical disc apparatus includes a laser diode for emitting a laser light, a beam splitter for dividing the laser light into a main beam and sub beam, a main photodetector for detecting the main... |
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US20070286037 |
Optical pickup device
A light source, an objective lens which concentrates light from the light source onto an information recording surface of an information storage medium, and a spherical aberration correction... |
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US20070147198 |
Optical pickup device and method of laying out the same
An optical pickup device is provided, in which, supposing that an angle formed by the meeting of a straight line connecting a center of an optical disk and an accessing position of an HD objective... |
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US20080232217 |
METHOD AND OPTICAL DISC DRIVE FOR ACCESSING DATA ON OPTICAL STORAGE MEDIUM
A method and optical disc drive for accessing data on optical storage medium are provided. The optical disc drive includes a sled motor and an optical pickup head. When the sled motor performs a... |
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US20080019232 |
OBJECT LENS AND OPTICAL PICK-UP DEVICE HAVING THE SAME
An object lens and an optical pick-up device having the same capable of recording and/or reproducing a plurality of types of optical discs, the optical pick-up device including: a light emitting... |
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US20120057441 |
SPHERICAL ABERRATION CORRECTION APPROPRIATE POSITION SEARCH APPARATUS, AND SPHERICAL ABERRATION CORRECTION APPROPRIATE POSITION SEARCH METHOD
A focus error amplitude obtaining device is configured to obtain amplitudes of a focus error signal. An error amplitude difference calculation device is configured to calculate an error amplitude... |
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US20070076564 |
Multi-layered media aberration compensation apparatus, method, and system
An apparatus, system, and method are disclosed for aberration compensation. In one embodiment, a first compensation lens used in conjunction with a second compensation lens to produce a conical... |
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US20090116346 |
OPTICAL RECORDING/PLAYBACK DEVICE AND MEDIUM DIFFERENTIATION METHOD
There is provided a recording/playback device able to differentiate the type of an optical disc or another such optical recording medium with a high degree of precision while correcting wavefront... |
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US20070002702 |
ABERRATION CORRECTING METHOD
The present invention discloses an aberration correcting method for use between an optical disc drive and an optical disc. The optical disc drive includes an optical pickup head having an... |
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US20050286355 |
Optical pickup, apparatus and method for assembling lens
An optical pickup and a lens assembling apparatus and a method thereof are provided. The optical pickup includes a plurality of objective lenses and a lens holder. The lens holder has a plurality... |
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US20090073825 |
Optical pick-up, aberration correcting method, optical pickup program, information recording device and method, information recording program, information reproducing device and method, information reproducing program, and information recording medium
The invention is to provide an optical pickup capable of performing a track search operation accurately by reducing noise occurring in a focus servo system during the track search operation and... |
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US20080002540 |
Holographic diffraction element and optical pickup device using holographic diffraction element
According to one embodiment, a holographic diffraction element is divided into a plurality of regions which diffract reflected light from an optical recording medium to a plurality of... |
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US20090109809 |
LASER DRIVE DEVICE AND INFORMATION RECORDING/REPRODUCING APPARATUS USING THE DEVICE
According to one embodiment, a laser drive circuit includes a photodetector which receives part of laser light emitted from a laser element to a recording medium independently of reflection laser... |
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US20070171786 |
Optical pickup apparatus and optical disk apparatus
An optical pickup includes: a light source for an optical disk; a beam splitter for splitting into a main and sub beams; and a photo-detector for sensing the main and sub beams reflected from the... |
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US20060062104 |
Lens unit for optical pick-up apparatus, optical element for optical pick-up apparatus, lens frame for lens unit, assembly method of the lens unit, and optical pick-up apparatus
The lens unit for the optical pick-up apparatus has: the objective lens by which the projecting light from the light source is condensed on the information recording surface of the optical... |
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US20060023611 |
Compound optical element and optical pickup apparatus
The present invention provides a compound optical element for an optical pickup apparatus, including: an aspherical lens and a resin layer arranged on at least one optical surface of the... |