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8165004 |
Optical pickup device
An optical pickup device capable of eliminating interlayer crosstalk which is responsible for fluctuation in control signals and error rate in data signals, thereby ensuring stable action for a...
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8154977 |
Reflecting wavelength plate and optical pickup using reflecting wavelength plate
Disclosed is a reflecting wavelength plate that deflects and reflects a light path and adds a phase difference with respect to plural incident light having different wavelengths. The reflecting...
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8154976 |
Reflecting wavelength plate and optical pickup using reflecting wavelength plate
Disclosed is a reflecting wavelength plate that deflects and reflects a light path and adds a phase difference with respect to plural incident light having different wavelengths. The reflecting...
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8144564 |
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...
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8130624 |
Optical head device for forming light spot on disc-shaped information medium
An optical head device has at least one upward-reflecting mirror, objective lenses, an objective lens actuator, and a moving mechanism. The upward-reflecting mirror receives an incident luminous...
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8125874 |
Optical pickup device
An optical pickup device has a DVD/CD laser diode for emitting a DVD/CD laser beam as linear polarized light, and a BD laser diode for emitting a BD laser beam. The optical pickup device has a...
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8064320 |
Optical pickup and optical disc apparatus using the same
An optical pickup includes first and second objective lenses; a first raising optical element that reflects an optical beam from a first direction within a plane substantially orthogonal to an...
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8040783 |
Optical information recording and reproducing apparatus, and cartridge
An optical information recording and reproducing apparatus relating to the invention employs a two-beam interference method. In the optical information recording and reproducing apparatus, a moving...
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8036093 |
Optical head device and recording/reproduction device
An optical head device includes a first light source and a second light source respectively emitting a first light beam and a second light beam, a luminous flux separating section selectively...
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8031578 |
Microarray with actuators inside and outside of light-irradiated region, and optical head device and optical information device incorporating the same
An optical head device according to the present invention includes: a light source for outputting laser light; an optical system for allowing the laser light to be radiated onto an optical disk...
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8023390 |
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...
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8018813 |
Holographic information recording and/or reproducing apparatus
A holographic information recording and/or reproducing apparatus including: a light source unit emitting reference light and signal light; a first optical path guiding unit guiding the lights to...
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7978588 |
Optical data reading/writing with stationary dish mirror
Apparatus and method for reading data from or writing data to a stationary optical storage medium. A light beam redirecting mechanism is rotatable about an axis through a stationary dish mirror...
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7948855 |
Optical pickup
A multiple wavelength-adaptive optical pickup according to the present invention enables to obtain stable signals by suppressing displacement of optical intensity distribution at a light receiving...
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7916585 |
Optical disc drive and method of controlling focal position
An optical disc drive for recording and/or reading information on or from an optical disc is disclosed. The optical disc drive includes: a position controller which controls the position of the...
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7903531 |
Optical disk apparatus for detecting tilt of an optical disk, and an optical disk for tilt detection
The invention provides an optical disk apparatus and an optical disk that are applicable to a multilayer optical disk, and enable tilt detection with a high precision. The optical disk has a...
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7889623 |
Reflecting mirror and optical pickup
A reflecting mirror with a reflective multi-layer coating capable reflecting light beams of discrete wavelengths, e.g., laser beams in the wave ranges of CD, DVD and mass storage optical discs,...
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7872952 |
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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7837341 |
Deformable mirror device
A deformable mirror device includes a flexible member formed so as to be deformable and having a mirror surface formed on its front surface, and a pressure generating section configured so that a...
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7826331 |
Optical pickup device
A flux separating unit is maintained in a stable state with a high positioning accuracy relative to a physical deformation when the light flux separating unit is attached or a great temperature...
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7813234 |
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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7808863 |
Laser/detector device for optical recording with adjustable detector position
An assembly structure and method for an integrated laser/detector device with a mirror at an angle to redirect the laser beam to a medium. The mirror is not attached to the circuit board with the...
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7804758 |
Holographic information recording/reproducing apparatus
An information recording/reproducing apparatus can suppress generation of stray light and prevent aggravation of the SN (signal to noise) ratio at the time of reproduction. If the angle of...
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7792402 |
Apparatus and method for coupling light to a thin film optical waveguide
An apparatus comprises an optical waveguide, a grating for coupling light into the waveguide, and an optical element for splitting a light beam into a plurality of beams that strike the grating at...
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7792007 |
Optical device for monitor and optical pickup apparatus
A monitor optical device has a first region and a second region. The first region transmits part of light beam emitted from a light source to introduce the transmitted light beam to a monitor...
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7764587 |
Optical pickup apparatus
An optical pickup apparatus includes a plurality of laser light sources, a single objective lens, and a beam shaping mirror. The beam shaping mirror causes each of the laser beams to be incident on...
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7760612 |
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...
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7742378 |
Method and apparatus for azimuthal holographic multiplexing using elliptical reflector
A method and an apparatus for recording at least two multiplexed holograms. Either an object beam or a reference beam is reflected from an aspherical reflecting surface. Either the reference beam...
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7679846 |
Lens driving device, optical pick up device and adjusting method
A lens driving device according to the present invention includes a mounting base; a collimation lens that is engaged with the mounting base and movable in optical axis directions; and a driving...
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7664005 |
Optical pickup apparatus
The adverse influence of reflected light from adjacent layers as stray light on a control signal or data signal is reduced when tracking a multilayered optical disc using differential push-pull...
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7660226 |
Optical system, optical pickup apparatus, and optical disk apparatus
The present invention discloses an optical system for extracting signal light components from a beam including the signal light components and stray light components. The optical system includes a...
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7619960 |
Optical pickup device
An optical pickup device using a laser beam comprising: a light-emitting element; a collimating lens; an objective lens; and a light-receiving element, wherein the laser beam emitted from the...
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7593308 |
Optical head device capable of detecting the output laser beam
The optical head device includes a semiconductor laser for emitting a laser beam having an elliptical beam shape; a collimator lens for collimating the laser beam emitted from the semiconductor...
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7508746 |
Optical pickup device
An optical pickup device comprises a light emitting element which emits laser light, a photodetector which monitors a state of the laser light emitted from the light emitting element and applies...
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7492695 |
Optical pick-up capable of increasing the quantity of received laser beam
An optical pickup device according to the present invention is constituted so that a laser beam emitted from a light receiving and emitting integral-type element is transmitted or reflected by a...
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7369482 |
Optical pick-up aberration correcting mirror, aberration correcting method and optical pick-up
It is an object of the invention to provide an aberration correcting mirror which has a small size, power saving, a low voltage, a low price and high precision. In particular, it is an object to...
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7324425 |
Optical disk device having mirror in micro electrical mechanical system
An optical disk device in which the laser beam emitted from a laser light source and deflected by a movable mirror is focused on an optical recording medium by an optical head section. Tracking...
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7315503 |
Optical pick-up device using micromirror array lens
An optical pick-up device comprising at least one micromirror array lens. The micromirror array lens enables focusing, tracking, and/or tilt compensation in the optical pick-up device without...
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7266071 |
Mirror fixing structure for optical pickup
A mirror fixing structure includes a substantially C-shaped flat plate disposed rearward to hold a half mirror, a single first leg provided rearward of the flat plate to extend downward and...
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7215630 |
Micro mirror unit, optical disc drive using same, and method for producing micro mirror unit
The hinge (13) should preferably be formed to have a higher resistance than ever against the pivoting of the mirror body (12) to effectively prevent the hinge (13) from being damaged. By adopting a...
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7209427 |
Optical pickup with reduced size
An optical pickup having a light-emitting element, an objective lens unit, a reflecting mirror and a light-receiving element, emits a beam onto an optical recording medium and uses a reflected beam...
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7177258 |
Optical pickup apparatus, optical data recording/reproducing apparatus, and optical data recording/reproducing method
An optical pickup apparatus used in an optical data recording/reproducing apparatus for reading/reproducing data on an optical recording medium, including a light source, a diffracting device...
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7154839 |
Optical pickup apparatus and signal recording and/or reproducing apparatus
While supporting an optical disc having a recording density that is higher than conventional optical discs by shortening the wavelength of the emitted light and increasing the numerical aperture...
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7130260 |
Apparatus for fixing a half mirror of an optical pickup and optical pickup
An optical pickup in which a substantially L-shaped retaining seat having an inclined side surface and an inclined end surface which are orthogonal to each other is formed on one side surface of a...
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7082084 |
Optical pickup apparatus
It is an object of the present invention to provide an optical pickup apparatus appropriate for the notebook PC that can prevent structural resonance of the lens holder by arranging the focus coil...
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7036134 |
Optical head and method of manufacturing the same
A reflecting mirror and an optical bench are placed on an external jig provided with a mirror holding portion for maintaining the reflecting mirror, and then the reflecting mirror and the optical...
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7023787 |
Optical pickup device
An optical pickup device has a first combination reception and emission device (1) which emits laser beams (10) to an optical disk, and a second combination reception and emission device (2) which...
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6992969 |
Optical pickup device with three adhesive parts on two parallel side faces of an optical component
In an optical pickup device, reliability of a holding structure for an optical component (a half mirror) with respect to a pair of mounting frames is intended to be enhanced. A half mirror (5) is...
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6985423 |
Optical pickup device with defocus adjuster
In an optical pickup device with a defocus adjustor used for adjusting a position of a photo-sensor against an optical system, the photo-sensor is mounted on a flexible printed circuit board, and...
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6980506 |
Pickup apparatus for disk player having a frame for supporting a half-mirror
A pickup apparatus 1 is directed to an apparatus for optically reading-out information on a disk 3 arranged in a disk player, and comprises a pickup 11, an LD 13, a half mirror 15, a photo detector...
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