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| Number | Title | Issue Date |
| 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 multilayered recording disc with a narrow interlayer spacing. The reflec... | 04/24/2012 |
| 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 optical axis of the first objective lens, thereby the optical beam being ... | 11/22/2011 |
| 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 device moves an information recording medium between a recording and... | 10/18/2011 |
| 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 medium; and an aberration correction section for correcting an aberratio... | 10/04/2011 |
| 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 that faces a stationary optical storage medium from which data may be re... | 07/12/2011 |
| 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, free of the problem of light absorption. ... | 02/15/2011 |
| 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 change after the light flux separating unit is attached, in an optical p... | 11/02/2010 |
| 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 device. The second region reflects the remainder of the light beam to intr... | 09/07/2010 |
| 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 method. The reflected light from the optical disc including stray light ... | 02/16/2010 |
| 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 laser; a reflector including pair of belt-like pieces one of the surface... | 09/22/2009 |
| 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 feedback to a control of the light emitting element, and a reflect mirr... | 03/24/2009 |
| 7368846 | Microactuator with displacement sensing function and deformable mirror including the microactuator According to the present invention, a moving element Ai such as an electrostatically driven actuator is displaced by supplying a drive signal thereto. Meanwhile, a displacement sensing section 6 senses its displacement and a calibrating section 15 auto... | 05/06/2008 |
| 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 provide a practical mirror for correcting a spherical aberration. | 05/06/2008 |
| 7359308 | Fixing structure for optical element and optical head device A fixing structure for an optical element includes a first element face of the optical element, a second element face of the optical element which is orthogonal to the first element face, a first positioning plane of a fixed member which abuts with the first element... | 04/15/2008 |
| 7354167 | Beam focusing and scanning system using micromirror array lens A beam focusing and scanning system using a micromirror array lens (optical system) includes a light source configured to emit light and a micromirror array lens, including at least one micromirror, optically coupled to the light source, configured to reflect the li... | 04/08/2008 |
| 7349145 | Optical deflection device and image projection display apparatus using the same An optical deflection device includes a substrate; a plurality of regulating members including upper portions including stoppers; a fulcrum member serving as an electrode; a plate member; and a plurality of electrodes. The plurality of regulating members, the fulcru... | 03/25/2008 |
| 7336566 | Method and apparatus for track type identification, and method of track jump The track jumping of a scanner on optical storage media in which information items are stored on groove and land tracks or which have not yet been written to is intended to be made possible in a reliable manner. For this purpose, firstly a fictitious track type is d... | 02/26/2008 |
| 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 control is carried out by a drive control section based on the laser bea... | 01/29/2008 |
| 7317674 | Optical pick-up units and laser drivers with increased functionality Optical pick-up units and laser drivers are disclosed, which can be used in various types of information recording/reproducing apparatuses, such as, but not limited to, DVD and CD drives, DVD camcorders, and DVD video recorders. A laser driver integrated circuit (LD... | 01/08/2008 |
| 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 macroscopic motions. The micromirror array lens provides the device with a... | 01/01/2008 |
| 7313073 | Optical pickup and optical disk system An optical pickup for reading information written on an optical disk is equipped with a laser diode having a front facet which emits light, a parallel light ray portion which collimates the emitted light from the laser diode, means for focusing collimated output lig... | 12/25/2007 |
| 7301872 | Optical pickup and optical disc drive device The present invention relates to an optical pickup and an optical disc drive that records or reproduces data signals on or from optical discs different in specifications, such as recording density and thickness. One objective lens (17) is used for optical dis... | 11/27/2007 |
| 7292515 | Multi-layer information storage system with focus and radial positioning error detection An optical information storage system has a multi-recording-layer record carrier and a scanner device for the carrier. The scanner produces a radiation beam which is compensated for spherical aberration for a single height of the scanning spot with the stack of laye... | 11/06/2007 |
| 7280457 | Optical disc with an improved compound lens The present invention relates to an optical pickup and a disc drive for preventing aberrations of laser light due to variations in temperature and humidity to ensure satisfactory characteristics of the laser light. A compound lens (14) is disposed in the opti... | 10/09/2007 |
| 7280263 | Reflective spatial light modulator A micro-mirror array that is useful, for example, in a reflective spatial light modulator. In one embodiment, the micro mirror array includes spacer support walls, a vertical torsion hinge, and a mirror plate, all being fabricated from a single wafer. The micro-mirr... | 10/09/2007 |
| 7276986 | Method and apparatus for improving signal integrity in a high speed flex cable A method for decreasing high-frequency attenuation effects in a flexible cable includes communicatively coupling signal-enhancing circuitry to a signal layer of the flexible cable. ... | 10/02/2007 |
| 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 inserted between a rear surface of the half mirror and a rear wall of a moun... | 09/04/2007 |
| 7257828 | Optical head device An optical head device includes a base member having an attachment surface passing a laser beam of light reflected by an optical disk, a block in the form of a wedge having an attachment surface adjacent to that of the base member and an attachment surface opposite ... | 08/14/2007 |
| 7236444 | Wavefront aberration correcting device and optical pickup equipped with the same An object of the present invention is to provide a wavefront aberration correcting device comprising a liquid crystal device that maximizes transmittance and minimizes light transmittance fluctuations even when the liquid crystal is driven by voltage. Disclosed is a... | 06/26/2007 |
| 7236434 | Exposure apparatus of an optical disk master, method of exposing an optical disk master, and wavefront fluctuation correction mechanism Apparatus and method for exposing an optical disk master having a laser source, a deflector for deflecting a recording laser beam based on the laser beam of the laser source and an objective lens for focusing the recording laser beam on an optical disk master, inclu... | 06/26/2007 |
| 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 suitable one of a variety of production steps a... | 05/08/2007 |
| 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 to read recorded information. In the objective lens unit, a central ... | 04/24/2007 |
| 7190854 | Methods for forming an array of MEMS optical elements An embodiment of the invention comprises an optical element capable of motion in at least one degree of freedom wherein the motion in at least one degree of freedom is enabled by serpentine hinges configured to enable the optical element to move in at least one degr... | 03/13/2007 |
| 7184229 | Optical switch element An optical switch element (1) for switching an optical path (2) comprises a fixed reflection element (4), which requires strict preciseness in positioning and angle-setting, and a movable optical path parallel displacement element (3A), w... | 02/27/2007 |
| 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 configured to transmit a light beam and to diffract a light beam reflected... | 02/13/2007 |
| 7173686 | Offner imaging system with reduced-diameter reflectors A projection optical system for digital lithography includes an Offner imaging system with a defined optical axis. The Offner imaging system has a well-corrected region. The system includes means for shaping an optical beam having an extent too large to fit within t... | 02/06/2007 |
| 7167194 | Printing a code on a product A method for printing is described. The method includes providing a printing system for printing a code on a product moving in a direction. The code is constructed from a plurality of pixels in a first data set indicating the positions of the pixels and generates a ... | 01/23/2007 |
| 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 (NA) of an objective lens, a reduction in the size of an optical pickup... | 12/26/2006 |
| 7145712 | Micro mirror unit and method of making the same A micro mirror unit includes a moving part carrying a mirror portion, a frame and torsion bars connecting the moving part to the frame. The moving part, the frame and the torsion bars are formed integral from a material substrate. The frame includes a portion thicke... | 12/05/2006 |
| 7136332 | Optical pickup device An optical pickup device has a semiconductor in which 2 light emitters laser emitting laser beams having different wavelengths for a DVD and CD are mounted on one package and disposes optical-system lenses with reference to a main beam for a DVD such that a long axi... | 11/14/2006 |
