| Patent application number | Description | Published |
|---|
| 20090034402 | 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 folding a direction of the light emitted from the light source; an objective lens for converging the light on a recording surface of an optical disc; a photodetector for receiving the light reflected at the recording surface of the optical disc, and converting to an electric signal; and an optical path adjustment unit for guiding the light emitted from the light source to the collimator lens and guiding the light reflected at the recording surface of the optical disc to the photodetector; a wavelength plate for polarizing the light reflected by the folding mirror is arranged on an actuator base between the folding mirror and the objective lens. | 02-05-2009 |
| 20090034403 | OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE - An optical pickup device which can more improve heat radiation efficiency and an optical disk apparatus including the optical pickup device are provided. The optical pickup device having a base ( | 02-05-2009 |
| 20090086330 | OPTICAL PICKUP, OPTICAL DISC DRIVE DEVICE, AND OPTICAL INFORMATION DEVICE - A small optical pickup of wide spherical aberration correction range is provided. The optical pickup includes a rising mirror for deflecting a light beam at substantially right angle and guiding to an entrance surface of the objective lens; a spherical aberration correction lens having one surface formed to a larger curvature than the other surface; a lens holder for holding the spherical aberration correction lens so that the surface of large curvature partially projects out towards the rising mirror side; a guide member extending in an optical axis direction of the spherical aberration correction lens sand having an end arranged to the side of a reflecting surface of the rising mirror; and a slidable part slidable along the guide member; wherein the projecting portion of the slidable part is configured to be fitted within the side surface of the reflecting surface of the rising mirror, and the projecting portion from the lens holder of the spherical aberration correction lens overlaps the reflecting surface of the rising mirror when the spherical aberration correction lens approaches the rising mirror the most. | 04-02-2009 |
| 20090138901 | OPTICAL PICKUP, OPTICAL ELEMENT, OPTICAL INFORMATION DEVICE, COMPUTER, OPTICAL INFORMATION MEDIUM PLAYER, CAR NAVIGATION SYSTEM, OPTICAL INFORMATION MEDIUM RECORDER AND OPTICAL DISK SERVER - An optical pickup includes: a laser light source which outputs an divergent beam having an elliptical far-field pattern; a beam shaping element having at least one cylindrical plane and which shapes the divergent beam outputted from the laser light source into an divergent beam having a prescribed shape in which at least the length in the major axis direction of the elliptical shape is shortened; a light collecting portion having a beam splitter which perpendicularly collects the divergent beam that is outputted from the beam shaping element and which has a prescribed shape on the recording surface of an optical disk, and a mirror or the like; and a light detecting portion The optical axis of the divergent beam is rotated so that the direction in which the major axis of the divergent beam having a prescribed shape is shortened conforms to the radial direction of an optical information recording medium. | 05-28-2009 |
| 20090147659 | OBJECTIVE LENS UNIT, OPTICAL PICKUP, AND OPTICAL INFORMATION DEVICE - An objective lens unit according to the present invention includes a first objective lens | 06-11-2009 |
| 20090213717 | METHOD OF ADJUSTING INCLINATION OF OBJECTIVE LENSES, METHOD OF PRODUCING OPTICAL PICKUP, DEVICE FOR ADJUSTING INCLINATION OF OBJECTIVE LENSES, OPTICAL PICKUP COMPONENT, OPTICAL PICKUP, AND OPTICAL INFORMATION RECORDING AND REPRODUCING DEVICE - A method of adjusting the tilt of objective lenses in an optical pickup having a plurality of light sources, an optical pickup component with a plurality of objective lenses which converge light from the plurality of light sources on an optical information recording medium and a movable part which holds the plurality of objective lenses, an actuator which drives the movable part of the optical pickup component, and a base on which the actuator is arranged and an optical system which introduces light emitted from the plurality of light sources to the plurality of objective lenses is constituted, which are capable of producing an optical pickup with a plurality of objective lenses while tilt is being simply adjusted, the method includes: | 08-27-2009 |
| 20090310465 | OPTICAL HEAD AND OPTICAL INFORMATION DEVICE - An optical head according to the present invention includes: a first light source that emits light with a first wavelength; a beam splitter that splits the light emitted from the first light source into a first light beam traveling in a first direction and a second light beam traveling in a second direction different from the first direction; a first collimator lens for changing degrees of divergence of the first light beam; a first mirror that changes the traveling directions of the first light beam, of which the degrees of divergence have been changed; a first objective lens for converging the first light beam, which has had its traveling directions changed, toward a storage layer of a first optical disk; a mover that holds the first objective lens; a first photodetector that receives the first light beam reflected from the storage layer of the first optical disk and converts it into an electrical signal; a condenser lens for condensing the second light beam; and a second photodetector that receives the second light beam condensed by the condenser lens and converts it into an electrical signal. | 12-17-2009 |
| 20100165823 | OPTICAL PICKUP DEVICE AND INFORMATION PROCESSOR - In an optical beam transmissive adjusting mechanism ( | 07-01-2010 |
| 20100260488 | OPTICAL DISC DEVICE, VIDEO REPRODUCING APPARATUS, SERVER, CAR NAVIGATION SYSTEM USING THE OPTICAL DISC DEVICE, INTEGRATED CIRCUIT AND RECORDING/REPRODUCING METHOD - An optical disc device is provided with an optical head ( | 10-14-2010 |
| 20110069601 | 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 placed between the light source and the optical recording medium, of which the transmittance varies depending on a voltage applied. The voltage applied to the optical element is switched so that the optical element has a lower transmittance upon reproducing a signal on the optical recording medium than upon recording a signal on the optical recording medium, at times when recording a signal on the optical recording medium and when reproducing a signal on the optical recording medium. | 03-24-2011 |
| 20110096645 | OPTICAL HEAD FOR OPTICAL RECORDER/REPRODUCER - An optical head for recording or reproducing a signal on or from an optical recording medium including a light source, an objective lens for condensing light emitted from the light source to the optical recording medium, and a light-separating device arranged between the light source and the objective lens in order to separate the light reflected from the optical recording medium from the light emitted from the light source. The light-separating device includes a first glass, a multilayer film formed on the first glass, and an adhesive layer arranged on the multilayer film in order to bond a second glass onto the multilayer film. The majority of the light emitted from the light source enters into the light-separating device through the first glass and is reflected by the multilayer film. | 04-28-2011 |
| 20110122744 | OBJECTIVE LENS UNIT, OPTICAL PICKUP, AND OPTICAL INFORMATION APPARATUS - An objective lens unit according to the present invention includes a first objective lens | 05-26-2011 |
| 20110122745 | OBJECTIVE LENS UNIT, OPTICAL PICKUP, AND OPTICAL INFORMATION APPARATUS - An objective lens unit according to the present invention includes a first objective lens | 05-26-2011 |
| 20110138405 | OPTICAL INFORMATION REPRODUCING APPARATUS, INFORMATION REPRODUCING METHOD OF OPTICAL INFORMATION REPRODUCING APPARATUS, PROGRAM AND RECORDING MEDIUM - A deterioration of reproduction light is occurred by a laser drive current on which a high-frequency current is superimposed. The present invention, for example, is an optical information reproducing apparatus which irradiates a laser beam to an optical disc | 06-09-2011 |
