Matches 1 - 46 out of 46


Match Document Document Title
US20050201221 Object lens producing device and producing method  
An objective lens unit manufacturing apparatus for manufacturing an objective lens unit, with a numerical aperture not less than 0.7, made up by a plurality of lenses, includes a positioning...
US20080089210 Solid immersion lens, and condenser lens, optical pickup device, and optical recording/reproducing apparatus including the solid immersion lens  
A solid immersion lens includes a spherical part being hemispherical on the side opposite to an object and an anti-reflection coating provided at least in an incidence range of incident light on...
US20090245074 PICK-UP HEAD ASSEMBLY FOR OPTICAL DISC EMPLOYING ELECTRICALLY TUNABLE LIQUID CRYSTAL LENS  
An optical disc storage system employs a read/write pick-up head assembly in which the optical path between the disc and the read/write light source, usually a laser diode, includes both a...
US20080279070 Optical Data Storage System and Method of Optical Recording and/or Reading  
An optical data storage system for recording and/or reading, using a radiation beam, having a wavelength λ, focused onto a data storage layer of an optical data storage medium is described. The...
US20110199882 Objective Lens and Optical Pickup Device  
There are provided an optical pickup apparatus which can record/reproduce information properly at a time of temperature change or of using a multilayer disc, and an objective lens for use in the...
US20100271927 OPTICAL PICKUP, OPTICAL DISC APPARATUS, OPTICAL PICKUP MANUFACTURING METHOD, AND OPTICAL PICKUP CONTROL METHOD  
An optical pickup includes: first and second objective lenses focusing light beams of different wavelengths on first and second optical discs having different thickness protection layers; a coma...
US20100124161 OPTICAL PICKUP AND OPTICAL INFORMATION REPRODUCING DEVICE  
An optical pickup and an optical information recording and reproducing device in which spherical aberration correction control after a disc is loaded can be efficiently made in a short time....
US20080137519 Multi-channel optical communication lens system and optical module using the same  
A multi-channel optical communication lens system, which is disposed between a plurality of arranged optical transmission lines and a plurality of photoelectric elements which is arranged facing...
US20100103802 OPTICAL UNIT AND ELECTRONIC EQUIPMENT USING THE SAME  
An optical unit includes: a first light emitting device configured to emit a first beam; and a second light emitting device configured to emit a second beam in a direction the same as a direction...
US20070237058 Recording and reproducing apparatus, recording and reproducing method, and method of determining type of recording medium  
A method of effectively determining a recording medium, a recording and reproducing method using the same, and a recording and reproducing apparatus using the same are disclosed. Since a narrow...
US20090040909 Optical head device and optical information device  
An optical head device is provided with a light source 1 for emitting a plurality of lights having different wavelengths, an objective lens 31 for focusing a light spot on an optical disc 21, an...
US20090274020 OPTICAL HEAD UNIT AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS  
An optical head unit is configured as an optical head unit corresponding to an optical recording medium of BD standard, and an optical recording medium of HD DVD standard. A magnification-variable...
US20090086612 OPTICAL PICKUP HEAD AND OPTICAL RECORDING AND REPLAYING DEVICE  
Optical pickup head comprises two semiconductor lasers for irradiating first to third optical beams, light receiving element for converting an optical signal into an electrical signal, and object...
US20110255392 OPTICAL PICKUP DEVICE  
A semiconductor laser emits infrared laser light for CD and red laser light for DVD. A collimator lens and a CD/DVD objective lens have optical axes thereof aligned with an optical axis of the...
US20110069601 OPTICAL ELEMENT, OPTICAL HEAD, OPTICAL INFORMATION DEVICE AND METHOD OF CONTROLLING OPTICAL HEAD  
An optical head includes a laser light source of emitting laser, an objective lens which focuses the laser emitted from the laser light source on an optical recording medium and an optical element...
US20100067356 OPTICAL ELEMENT FOR OPTICAL PICKUP DEVICE, OPTICAL PICKUP DEVICE AND METHOD FOR ASSEMBLING OPTICAL PICKUP DEVICE  
An optical element for an optical pickup device which can record and/or reproduce information interchangeably with an optical disc while correcting coma satisfactorily, and a compact optical...
US20090034402 Optical Head Device, Optical Information Device, Optical Disc Player, Car Navigation System, Optical Disc Recorder, and Optical Disc Server  
In an optical head device including a light source for emitting a light of a predetermined wavelength; a collimator lens for converting a divergence degree of the light; a folding mirror for...
US20130194906 OPTICAL PICKUP AND OPTICAL SYSTEM INCLUDING THE SAME  
Provided are an optical pickup and an optical system employing the optical pickup. The optical pickup includes a twin light source. In various aspects, a length between the two light sources of a...
US20110110207 OPTICAL UNIT, CONTROL METHOD, AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE  
An optical unit includes an optical system for shining a laser beam on an optical recording medium having a recording layer and a focus control reference surface. The optical system is composed of...
US20050281179 Apparatus for optical disc spin-coating  
The present invention provides an apparatus for optical disc spin-coating that prevents leakage of a photocurable resin due to a capillary phenomenon by controlling a contact area between a cap...
US20090141597 NEAR FIELD OPTICAL RECORDING DEVICE AND A METHOD OF OPERATING A NEAR FIELD OPTICAL RECORDING DEVICE  
A near field optical recording device and method of operating a near field optical recording device, the device being arranged to cooperate with an optical record carrier. The device comprising...
US20080068975 Objective lens actuator and optical pickup device  
A first objective lens and a second objective lens which are formed as separate bodies each other are held side by side by a lens holder. The lens holder includes a first lens receiving surface to...
US20130279319 OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE  
An optical pickup device moves in a feed direction parallel to a radial direction of an optical disc rotating on an axis of rotation, and records or reproduces information on an information...
US20110182167 OPTICAL PICKUP DEVICE AND METHOD FOR MANUFACTURING THE SAME  
An optical pickup device comprises a first objective lens fixed on a lens holder and configured to focus a first laser beam on a signal recording layer provided in an optical disc, the lens holder...
US20080239929 OPTICAL HEAD DEVICE  
An optical head device may include a first laser light source, a second laser light source, a first parallel-plate type beam splitter for guiding a first and a second laser beams to a common...
US20140245333 APPARATUS AND METHOD FOR FOCUSING A LASER BEAM ON AN OPTICAL DISC  
Provided are a method and apparatus for focusing a laser beam on an optical disc. According to various aspects, the apparatus may include an objective lens which has a numerical aperture below...
US20110211438 COLLIMATING LENS UNIT AND OPTICAL PICKUP DEVICE USING THE SAME  
An optical pickup device that can reduce interlayer crosstalk, without changing the configuration of the optical system, and without excessively increasing the size of the optical system. The...
US20080192615 Actuator for an Optical Scanning Device  
An optical pickup actuator for scanning an optical record carrier comprises a first section having an objective system and second section having an optical element with large position tolerances...
US20080049586 OPTICAL PICKUP APPARATUS AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS  
According to one embodiment, an optical pickup apparatus and an optical information recording/reproducing apparatus including an embodiment of the present invention has an objective lens for...
US20090245073 OPTICAL PICKUP APPARATUS  
An optical-pickup apparatus comprising: a laser diode; an objective lens made of a synthetic resin to focus laser light emitted from the laser diode onto a signal-recording layer of an optical...
US20080002555 Optical pickup and optical disc apparatus  
An optical pickup irradiating a multi-layered optical disc with light to receive a beam reflected from the layer, which includes an objective lens, a condenser lens, a polarization optical element...
US20110199885 Disk Unit  
In this disk unit, a tray has an air intake opening formed to extend from an upstream side in a rotational direction of a disk rotated by a rotating portion toward an optical pickup and to extend...
US20060198279 Optical pickup apparatus  
An optical pickup apparatus includes: a first light source; a second light source; a third light source; an objective lens; a coupling lens; a light flux splitter; and a light-receiving element....
US20110182166 OPTICAL PICKUP  
An optical pickup that can be downsized is suggested. The optical pickup includes: a collimator lens positioned on an optical path of a laser beam between a laser diode and an objective lens; and...
US20100238783 OPTICAL PICKUP  
An optical pickup of this invention includes a first objective lens for a CD or DVD, a second objective lens for a BD, a photodetector, a light source for a CD or DVD, a light source for a BD; a...
US20070053275 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 first lens (22), and a second lens (23). The light source is adapted for providing an...
US20110276989 OPTICAL PICKUP DEVICE AND OPTICAL DISC DRIVE  
Has an object of providing an optical pickup capable of realizing tracking control or focus control at a higher level of precision even when relative positions of a light source and a light...
US20100208571 Optical Pickup Apparatus and Optical Disk Apparatus Using the Same  
An optical pickup apparatus includes a light source emitting a light, an objective lens collecting the light on an optical disk, a collimate lens that is moved in an optical axis direction along a...
US20090161522 Apparatus for Reproducing and/or Recording and Recording Medium  
An apparatus for reproducing and/or recording a recording medium (50) are disclosed. For example, the apparatus includes a lens unit (40) consisting of a near-field lens (42), which takes the form...
US20080181089 OPTICAL PICKUP  
Two types of objective lenses are arranged in a radial direction of an optical disc, a light flux reflecting/transmitting member arranged with first and third optical films for reflecting the beam...
US20070091770 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 first lens (22), and a second lens (23). The light source is adapted for providing an...
US20100061216 OPTICAL HEAD UNIT AND OPTCAL INFORMATION RECORDING/REPRODUCING APPARATUS  
An optical head unit includes, apart from an objective lens toward a light source, an optical device that changes the image height of light incident onto the objective lens, wherein the optical...
US20090028037 OPTICAL SCANNING DEVICE  
An optical scanning device for scanning a record carrier (22), the record carrier having an outer face (24), wherein the optical scanning device comprises a radiation source system (2) arranged to...
US20080253266 OPTICAL PICKUP DEVICE AND OPTICAL DISK APPARATUS  
Optical characteristics of laser beams guided to first and second objective lenses are adjusted by integrally driving first and second lens elements. The first and second lens elements are...
US20050276208 Optical pickup adjusting apparatus and optical pickup adjusting method  
It is an object of the present invention to adjust an optical pickup without using an optical disc. An optical axis adjusting apparatus of the present invention comprises: a light receiving unit...
US20100214891 OPTICAL PICKUP DEVICE, OPTICAL DISC DEVICE, COMPUTER, OPTICAL DISC PLAYER, AND OPTICAL DISC RECORDER  
A first light source 1a emits a first light flux with a first wavelength. A second light source 1b emits a second light flux with a second wavelength that is different from the first wavelength...

Matches 1 - 46 out of 46