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US20090010136 Beam Shaper for an optical storage system  
The present invention relates to a beam shaper and to an apparatus for reading from and/or writing to optical storage media using in such a beam shaper. According to the invention, a beam shaper...
US20050058050 Optical pick-up having a spherical aberration compensator and a method of compensating for spherical aberration  
An optical pick-up apparatus and method incorporating a spherical aberration compensator is disclosed. The optical pick-up employs the spherical aberration device that comprises a wave plate for...
US20050117497 Optical 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  
Providing an objective lens with a large numerical aperture (NA), the present invention records or plays conventional optical disks such as CDs and DVDs using an optical head capable of recording...
US20120099413 Compound quarter-wave retarder for optical disc pickup heads  
Chemically-bonded laminated polymer achromatic polarization devices, such as circular polarizers, are disclosed for use in optical disc (e.g., CD/DVD) pickup heads. Chemically-bonded laminated...
US20080049583 OPTICAL PICKUP DEVICE  
An optical pickup device for resolving problems with deterioration in the RF signal due to crosstalk from the preformatted structures in optical disks which provide address information, especially...
US20120075980 HIGH-RESOLUTION READ HEAD FOR AN OPTICAL DISK  
The instant disclosure relates to a high resolution read head for an optical disk, including a monochromatic laser source; a radial polarization polarizer; an annular diaphragm that is opaque at...
US20070195676 Optical system  
An optical system comprising an optical element arranged on an optical axis in the path of a radiation beam. The optical element (2; 116; 202) comprises a birefringent material and has a...
US20070121473 Laser scanning microscope with a non-descanned detection and/or observation beam path  
Laser Scanning Microscope with a non-descanned detection and/or observation beam path, wherein a beam splitter is provided for the separation of the illumination and the detection beam paths. In...
US20050105449 Optical scanning device  
A scanning optical device includes a number of independently moveable optical heads H1, H2. Radiation generated by a radiation source is split and made incident on the heads H1, H2 simultaneously....
US20080259768 Optical pickup apparatus  
There is provided an optical pickup apparatus in which the assembling workability such as chucking of an LD holder by an adjusting jig and spreading of adhesive can be improved. In the optical...
US20090059767 Optical Pick-Up Apparatus and Information Record and Reproduction Apparatus  
To reduce energy loss on an optical path and improve efficiency of using light volume of light source. A light beam in a P polarized state is emitted from a semiconductor laser 11, and...
US20070183297 Compositive wave plate  
The invention is intended to solve the problem of a phase shift by the incidence angle dependence of a composite wave plate which is caused when divergent light is incident directly thereon...
US20070053274 Compatible optical pickup and optical recording and/or reproducing apparatus employing the same  
An optical pickup and an optical recording and/or reproducing apparatus include a light source which emits light having a first wavelength, an objective lens that focuses incident light on an...
US20060072425 Array-based optical head  
An array-based optical head is configured for read and/or write operations to optical media. In one implementation, a polarizing beam splitter is configured to direct laser light to optical media....
US20120207007 REFLECTION TYPE WAVELENGTH PLATE AND OPTICAL HEAD DEVICE  
A phase difference layer 12 and a reflection layer 13 are provided. Then, adjustment is performed such that the phase difference layer 12 and the reflection layer 13 impart a predetermined phase...
US20050169153 Two wavelength laser module and optical pickup device  
A two wavelength laser module is made up of a semiconductor laser assembly that includes a first semiconductor laser for emitting a first light beam of a first polarization direction and a second...
US20080049584 Optical Pick-Up Unit  
An optical pick-up including a fold mirror having an achromatic quarter-wave plate coating is provided. To allow the thin film coating to efficiently provide the quarter-wave retardation, the...
US20050036432 Optical pickup capable of reducing focus offset and optical recording and/or reproducing apparatus employing the same  
An optical pickup to reduce a focus offset by alleviating the effect of at least a part of a region of a beam whose intensity is high due to residual aberration on a signal detected by a...
US20080170486 Optical Pickup Device  
An optical pickup device is constituted to enable stable recording or reproduction on/from a recording medium. The optical pickup device has an irradiation optical system for condensing a light...
US20080304394 OPTICAL PICKUP AND OPTICAL DISK APPARATUS  
An optical pickup includes: a first light source that emits a first linearly polarized light beam; a second light source that emits a second linearly polarized light beam different from the first...
US20070263521 Optical pickup and optical disk apparatus  
An optical pickup is configured to emit a light beam to an optical disk having a plurality of recording layers and is configured to receive a reflection light beam obtained when the emitted light...
US20090252019 MICRO OPTICAL PICKUP APPARATUS  
This invention discloses a micro optical pickup apparatus for providing an incident light to an optical recording medium, receiving a reflected light from the optical recording medium, and thereby...
US20080002554 Polarized-light splitting device, display including the same, method of manufacturing the same, and apparatus for manufacturing the same  
A polarized-light splitting device includes a transmissive base member having a base portion and pattern of ridges on the base portion, and a non-transmissive layer on the ridges, wherein the...
US20060239171 Polarizing diffraction element and optical head device  
A polarizing diffraction element having a wavelength selectivity which functions as a polarizing diffraction element at a wavelength λ1, and which does not function as a diffraction grating not...
US20070104072 Extraction optical system, optical pick-up device and optical disc apparatus  
An extraction optical system for use in an optical pick-up device receiving a reflected light from an optical disc having a plurality of recording layers is provided. The extraction optical system...
US20070253311 OPTICAL PICK-UP APPARATUS AND OPTICAL DISC APPARATUS  
To provide an optical pick-up apparatus and an optical disc apparatus preventing a polarization hologram from being deteriorated by incidence of laser light having a wavelength for a blue laser...
US20090086610 OPTICAL PICKUP APPARATUS, OPTICAL RECORDING MEDIUM DRIVING APPARATUS, AND SIGNAL RECORDING/REPRODUCING METHOD  
An optical pickup apparatus capable of irradiating an optical recording medium having a plurality of recording layers on which a signal is recorded with laser light includes a light source...
US20070206480 Polarization state detector systems and methods for read-out of multilevel oriented nano-structure optical media  
A polarization detection system structured for optical read-out of disc-shaped optical data/information storage and retrieval media with surfaces comprised of pits or marks configured as...
US20090268585 WAVELENGTH SELECTING WAVELENGTH PLATE AND OPTICAL HEAD DEVICE USING IT  
An optical rotating plate has an optical rotating material layer. A phase plate is provided on a first surface side of the optical rotating plate and has at least one birefringent material layer....
US20090190460 OPTICAL HEAD AND APPARATUS USING THE SAME  
An optical head and an apparatus using the optical head are shown. The optical head includes a light-emitting element, a first polarized light diverging element for transmitting the light beam of...
US20080267042 OPTICAL PICKUP DEVICE  
A quarter-wave plate and a polarization beam splitter are used as means for guiding a laser beam to first and second objective lenses. A half of the circularly-polarized laser beam incident to the...
US20080205246 OPTICAL HEAD AND OPTICAL DISK DEVICE  
An interference type optical head and an optical disk device that can easily adjust an optical path length difference of a couple of lights, ensure higher signal amplification effect, and are...
US20140010064 OPTICAL PICKUP DEVICE AND OPTICAL DISK DRIVE INCLUDING THE SAME  
Provided are an optical pickup device and an optical disk drive including the same. The optical pickup device includes a quarter-wave plate (QWP) that is disposed parallel to an objective lens and...
US20110305121 NEAR-FIELD LIGHT GENERATING DEVICE, RECORDING HEAD, AND RECORDING DEVICE  
A near-field light generating device (10) which converts incident light into near-field light, includes: a metallic member (11) made of a metallic material; and a dielectric member (12) made of a...
US20070274171 OPTICAL DISK APPARATUS  
Provided is an optical disc apparatus including an interference-type optical disk signal detection system, which allows an optical path difference between two kinds of light to be controlled...
US20050174919 OPTICAL POLARIZATION CONTROLLER  
A optical polarization controller for receiving an input light beam and outputting a transverse magnetic (TM) polarized light beam or transverse electric (TE) polarized light beam is provided. The...
US20070008858 Optical pickup and optical disc apparatus  
There is provided an optical pickup for recording or reproducing an information signal on/from a plurality of optical discs, each including a protective substrate having a different thickness for...
US20130135982 OPTICAL INFORMATION REPRODUCTION DEVICE, OPTICAL INFORMATION REPRODUCTION METHOD, AND INFORMATION RECORDING MEDIUM  
An optical information reproduction device includes a light source (14) configured to emit reproduction light, a plasmon resonance element (9) including a resonance section (22) arranged adjacent...
US20120008483 OPTICAL HEAD AND OPTICAL DISC APPARATUS  
Reference light for interference with signal light from an optical information recording medium is displaced and reflected by a corner cube prism or the like with high accuracy. The signal light...
US20110002215 OPTICAL PICKUP DEVICE AND OPTICAL INFORMATION PROCESSING APPARATUS USING THE OPTICAL PICKUP DEVICE  
An optical pickup device is disclosed. In the optical pickup device, S-polarized light is input to a polarization filter from a DVD light source or a CD light source. Since the polarization filter...
US20110235495 OPTICAL HEAD AND OPTICAL RECORDING/REPRODUCING APPARATUS  
Certain embodiments provide an optical recording/reproducing apparatus including: a slider that has a medium facing surface that faces an optical recording medium, and moves along a...
US20100220577 OPTICAL HEAD DEVICE, OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE, AND OPTICAL INFORMATION RECORDING/REPRODUCING METHOD  
Polarization direction switching elements do not change the polarization direction of incoming light, in the case where a disc is an optical recording medium conforming to the HD DVD standards. At...
US20080186832 OPTICAL HEAD UNIT AND OPTICAL DISC DRIVE  
According to an embodiment of the optical head unit includes two or more light sources, an objective lens which condenses the light beam having the predetermined wavelength output from each of the...
US20070081441 Optical pickup device and information recording/reproducing apparatus  
An optical pickup device according to the present invention having two light sources is capable of emitting lights having different wavelengths from each other for recording/reproducing...
US20130235708 Optical Storage Device with Direct Read after Write  
A system and method for providing direct read after write functionality in an optical data storage device include an optical head having a first coherent light source modulated at higher power...
US20120257489 RECORDING/REPRODUCING APPARATUS AND RECORDING/PRODUCING SYSTEM  
A recording/reproducing apparatus includes an optical source and a near-field light generating unit. The near-field light generating unit includes two conductors facing to each other at a...
US20120201114 OPTICAL PICKUP, OPTICAL RECORDING/REPRODUCING DEVICE, COMPUTER, OPTICAL DISK RECORDER, AND MINUTE SPOT FORMING METHOD  
An optical pickup, an optical recording/reproducing device, a computer, an optical disk recorder, and a minute spot forming method that can enable light propagation with a high transmittance and...
US20120176881 OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS APPLYING THE SAME  
An optical pickup device is provided. The device includes a semiconductor laser light source which outputs linearly-polarized light having an elliptical shape, an objective lens which focuses...
US20120134254 OPTICAL PICKUP APPARATUS  
Provided is an optical pickup apparatus that stably operates by accurately detecting a fluctuation in a light amount of a laser beam caused by movement of a collimating lens. In an optical pickup...
US20120008475 METHOD OF CONTROLLING LIGHT, AND OPTICAL PICKUP DEVICE AND OPTICAL DISK DRIVE ADOPTING THE METHOD  
An optical pickup device, an optical disk drive and method of controlling light performed by the optical pickup device are provided. The optical pickup device includes: a light transmitting system...

Matches 1 - 50 out of 53 1 2 >