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Match Document Document Title
7616548 Optical pickup apparatus and optical disc apparatus  
An optical pickup apparatus and an optical disc apparatus are adapted to raise the efficiency of utilization of the lasers of the apparatus for accurately detecting tracking errors by raising the...
7605363 Optical pickup unit including a receiving portion  
An optical pickup unit comprising: a circuit connected to a light emitting device emitting light; and a counterpart circuit connected to the circuit, the circuit being soldered to the counterpart...
7558184 Optical pickup device  
Provided is an optical pickup device capable to suppress an occurrence of an aberration on a recording medium and a decrease of power of laser beams while employing a diffraction grating as an...
7558183 System and method for optical media marking  
An information handling system optical medium disc is labeled by removing portions of disc's polycarbonate material from the non-storage side of the disc to form an image. Formed images define a...
7558182 Optical head and optical disc device provided therewith  
To provide an optical head and an optical disc device, in which a cover member for radiating and protecting the optical head and a laser light source are of a simple construction, manufacturing...
7554896 Electron beam recording apparatus  
An electron beam recording apparatus provided with control means for forming a latent image in a resist layer on a disk substrate corresponding to a predetermined pattern by controlling the...
7545726 Optical disc drive  
An optical disc drive includes a light source and an objective optical system for condensing a light from the light source onto a recording surface of an optical disc. A chassis which is movable...
7542401 Birefringence characteristic measuring method, optical recording medium and optical information recording/reproducing apparatus  
Four types of optical systems, a polarization optical system including an objective lens having a high numerical aperture, a polarization optical system including an objective lens having a low...
7535815 Disc drive apparatus  
An optical disc drive apparatus includes a laser device for generating a light beam for optically reading data from a disc. The laser device is electrically incorporated in a resonant circuit which...
7518975 Operating current modifying device and method  
An operating current modifying device is provided for a power generating element. The power generating element generates an output power when the operating current is larger than a threshold...
7496025 Optical disc drive apparatus with an indirect semiconductor laser containing an asymmetric quantum well structure  
An indirect semiconductor laser having an indirect semiconductor used as the material of an active layer is used, instead of a conventional direct semiconductor laser so as to obtain a reproducing...
7483358 Objective lens, optical element, optical pick-up apparatus and optical information recording and/or reproducing apparatus equipped therewith  
A hybrid objective lens has a refractive lens and a diffractive optical element constructed by plural coaxial ring-shaped zones on at least one optical surface thereof. When n1, n2 and n3 each is a...
7480230 Light source drive, optical information recording apparatus, and optical information recording method  
A light source drive which modulates a light source so as to cause the same to emit a light, includes: a superposition current generation part which generates a superposition current approximately...
7480229 Light-emitting device and optical integrated device  
In fabricating a monochromic and highly coherent light source, no single crystalline bulk semiconductor is used, but two different kinds of transparent substances are alternately stacked over each...
7471595 Slim optical pickup  
A slim optical pickup in which a leaf spring is combined with an upper surface of a semiconductor substrate, which is a silicon optical bench (SiOB) monolithically manufactured with a...
7463571 Optical element, optical pickup, and optical information recording/reproducing apparatus  
The hologram ( 20 ) for spherical aberration correction is formed in optical element ( 10 ). With respect to the first laser light which requires the largest effective diameter, the hologram does...
7457226 Heat source having thermoelectric element, optical pickup assembly employing the same, and method of reducing temperature therein  
A heat source having a device emitting heat, a case protecting and supporting the device, and a thermoelectric element absorbing the heat emitted from the device and dissipating the heat to an...
7453787 Optical pickup  
An optical pickup projects laser beams having the first to the third wavelengths, in response to the type of a recording medium which is an object to which recording or reproduction is to be...
7440386 Optical device and method of manufacturing the same  
A copper frame plate ( 2 ) has a central frame plate ( 2 a ) and a pair of side frame plates ( 2 c ) bent from both ends of the central frame plate. A flexible substrate ( 3 ) has a central...
7414949 Semiconductor laser device and optical pickup device  
A semiconductor laser device includes: a semiconductor laser chip which is composed of a semiconductor substrate and a plurality of semiconductor layers stacked on an element formation face of the...
7408867 Method of aligning an optical fiber, method of manufacturing a semiconductor laser module, and semiconductor laser module  
A method of aligning an optical fiber according to the present invention has a first step of aligning an optical fiber by moving the optical fiber and finding a position that maximizes the power of...
7400821 Device and method for reproducing photographic sound recordings  
For a reproduction of optical sound information in a double variable-area track (DZ) an optoelectronic converter device scans the optical sound track of a film. The converter device generates a...
7400568 Optical device, optical pickup and optical disk apparatus  
An optical device wherein an optical component and a plurality of light emitting elements are mounted on an identical substrate, a level of a surface on which the optical component is mounted is...
7388823 Optical pickup, manufacturing method thereof, and optical disk system  
An optical pickup for reading information written on an optical disk is equipped with a vertical multi-mode converted laser diode which emits light, means for focusing the emitted light from the...
7366080 Laser control unit, laser control circuit, and laser-power adjustment method  
A laser control unit, a laser control circuit and a laser-power adjustment method are provided which are capable of controlling laser power precisely, even if an error is produced in the duty of an...
7345980 Optically storing digital data in the form of spectrally coded particles  
A digital data storage medium comprises data in the form of particles which are spectrally coded. The particles generally have the same size and shape. The particles are spectrally coded by...
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...
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...
7307940 Optical pick-up device  
It is an object of the present invention to provide an optical pick-up device capable of being miniaturized by reducing the number of components. The present invention provides an optical pick-up...
7307923 Electro magnetic field generating element, information recording and reproducing head and information recording and reproducing device  
To realize an electromagnetic field generating element, an information recording and reproducing head and an information recording and reproducing device for high frequency magnetic recording and...
7295503 Data storage device including nanotube electron sources  
A data storage device includes a phase-change storage layer and an array of nanotubes as electron sources.
7292517 Optical scanning device for use with multiple types of record carrier surfaces  
An optical scanning device for scanning of a first, second and third type of optical record carrier with radiation of a first wavelength λ 1 , a second wavelength λ 2 and a third wavelength λ 3...
7289422 Optical devices having transmission enhanced by surface plasmon mode resonance, and their use in data recording  
A device includes an optical gain medium through which optical radiation is amplified. The device includes first and second reflectors disposed around the gain medium. One of the reflectors...
RE39901 Initialization of phase-change optical recording medium  
A method of initializing a phase-change optical information recording medium is provided, using an optical system incorporating a semiconductor laser device. The laser device is characterized by a...
7286464 Optical element and optical pick-up device  
An optical element to be arranged in an optical pickup apparatus for conducting information recording and/or reproducing and to converge light fluxes with a plurality of wavelengths including a...
7286259 Self-scanned light-emitting device array, its driving method, and driving circuit  
A method for driving a self-scanning light-emitting element array is provided in which two light-emitting elements may be illuminated simultaneously in one chip. In a self-scanning light-emitting...
7274648 Semiconductor laser drive circuit including a waveform generator voltage-to-current conversion circuit  
A semiconductor laser drive circuit of the present invention reduces the number of wires, solves the out-of-timing problem of pulses due to differences in wire length, and emit short light pulses...
7269120 Optical pickup  
An optical pickup includes a radiating plate made to abut against a rear surface of a laser diode by positioning an engaging hole provided penetratingly in a central portion of the radiating plate...
7257070 Optical disc recording and/or reproducing apparatus and aberration adjustment method  
The astigmatic aberration in an optical system is to be adjusted. Specifically, in an optical disc device on which can be selectively loaded a first optical disc having a first index of double...
7245574 Optical head and its adjusting method and optical disk device using the same  
An optical disk apparatus includes a motor to rotate an optical disk and an optical head to apply light to the optical disk. The optical head includes a light source to emit the light to be applied...
7236440 Optical recording medium  
A high-speed, write-once type optical recording medium, which utilizes laser light that is either blue or an even shorter wavelength, as well as an optical recording method and an optical recording...
7230905 Optical pickup using two-wavelength light source module and method for correcting position difference  
An optical pickup includes a light source module in which first and second light sources that emit first and second light beams of different wavelengths are integrated into a single package, an...
7218804 Method and device for establishing an optical connection between an optoelectronic component and an optical waveguide  
A method for establishing an optical connection between at least one optoelectronic component arranged in a first substrate and emitting or receiving optical radiation substantially perpendicular...
7218596 Apparatus and method for optical data storage and retrieval  
An optical storage device and method of operating that device are disclosed. The device includes an optical storage medium, and a light source capable of generating light that is transmitted to the...
7215476 Optical pickup, optical information recording/reproducing apparatus using the same, and phase variable wave plate used in the pickup and the apparatus  
Laser beams respectively emitted from a SHG blue laser unit and a red semiconductor laser unit that have photo detectors respectively are turned into parallel lights by a collimator lens and then...
7180845 Optical pickup  
An optical pickup having a simple structure and that is capable of recording using a plurality of wavelengths is provided, comprising a primary laser light source for emitting a primary laser light...
7158470 Near-field optical head system with integrated slider and laser  
A near-field optical apparatus having one or more solid state lasers and an aerodynamically shaped slider which comprise a single integrated, monolithic device fabricated from the same base...
7142742 Method for arranging conducting lines of a flexible cable in an optical disk drive  
A method for arranging conducting lines of a flexible cable in an optical disk drive first confirms the pins having similar functions of all chips on a main board and a sub-board, and uses only one...
7136345 Optical pickup device and optical disk device  
An optical pickup device includes a frame F in which an integrated optical unit equipped with a semiconductor laser diode is incorporated and a flexible substrate F having a short-circuit wiring...
7135695 Line light source system  
A line light source system includes a line light source formed by a number of linearly arranged light emitting elements. A pair of cylindrical lenses converges the light bundles emitted from the...
Matches 1 - 50 out of 404 1 2 3 4 5 6 7 8 9 >