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Match Document Document Title
EP1041546B1 Compatible optical pickup  
7403458 Compatible optical pickup and light output amount detecting method performed in the compatible optical pickup  
A compatible optical pickup, including first and second light sources for emitting lights with different wavelengths and first and second photodetectors for detecting an information signal and/or...
7403453 Optical disk apparatus compatible with different types of mediums adapted for different wavelengths  
A polarizing beam splitter for separating an upstream beam from a downstream beam according to the polarization of an incident beam is provided between first and second light sources emitting laser...
RE40329 Single objective lens for use with CD or DVD optical disks  
An optical disk reader or read/write system for CD or DVD formats. First and second laser diodes operating at different wavelengths have their output beams collimated and directed at a single...
7372794 Compatible optical pickup applying tilt to objective lens in proportion to radial movement of objective lens  
A compatible optical pickup compatibly using a high density recording medium and at least one low density recording medium, includes an objective lens to form a light spot suitable for use on a...
7366078 Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method  
An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a...
7342851 Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method  
An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a...
7310295 Optical disk drive device and method for correcting tilt of optical pickup  
A tilt sensor 23 is provided on a CD optical pickup 11 , and a sub-chassis 24 and a height adjustment mechanism 25 and the like are provided for adjusting the tilt of a DVD optical pickup ...
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...
7283452 Objective lens having two aspheric surfaces and a phase shifter and optical device including the same  
An objective lens in which a first wavelength is used in reading a first optical disk, a second wavelength is used in recording or reading a second optical disk, and a phase shifter provided with...
7173897 Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method  
An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a...
7173896 Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element and information recording/reproducing method  
An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a...
7173895 Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method  
An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a...
7164625 Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method  
An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a...
7088645 Optical pickup apparatus compatible with different types of optical recording mediums  
A polarizing beam splitter for separating an upstream beam from a downstream beam according to the polarization of an incident beam is provided between first and second light sources emitting laser...
7072114 Optical pickup using an optical phase plate and which is compatible with optical recording media of different types  
An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an...
7046611 Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens  
An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the...
7038994 Optical pickup device with a plurality of laser couplers  
An optical pickup device with the capability to read data from and write data to different kinds of optical discs in different formats and a composite optical device used in the optical pickup...
6985293 Optical pickup using an optical phase plate and which is compatible with optical media for different types  
An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an...
6950384 Optical pickup appratus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method  
An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a...
6940798 Optical-disk reproducing apparatus, optical pickup apparatus and optical-disk recording and reproducing apparatus  
The present invention is capable of selectively reproducing an information signal from an optical disk with any of a plurality of types having different track pitches of recording tracks, that is,...
6882614 Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses  
A recording/reproducing apparatus having an optical pickup device which is efficient in light use having little spherical aberration. The recording and/or reproducing apparatus includes an optical...
6870805 Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method  
An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a...
6822667 Multi-channel optical recording using VCSEL arrays  
A multi-beam optical recording system having an array of light sources, such as Vertical Cavity Surface Emitting Lasers (VCSEL), oriented to the direction of motion of an optically sensitive...
6816449 Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens  
An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the...
6791933 Optical pickup using an optical phase plate  
An optical pickup apparatus having compatibility with a recodable compact disk (CD-R) and a digital video disk (DVD), which uses a wavelength of one of a first light beam and a second light beam...
6788636 Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens  
An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the...
6781764 Objective lens for optical pick-up  
An optical system of an optical pick-up includes a light source portion that selectively emits a first laser beam (shorter wavelength) and a second laser beam (longer wavelength), and an objective...
6717897 Optical pickup apparatus, optical disc apparatus, and track recognition signal detection method  
A primary spot and a secondary spot are formed on an optical disc 101 . The primary spot is used for recording and reproduction. The secondary spot is positioned apart from the primary spot. The...
6678233 Objective lens and optical pickup device using the same  
An objective lens includes an aspherical lens facing a disk and having a predetermined first focal distance and a predetermined numerical aperture, and a holographic lens installed adjacent to the...
6650612 Optical head and recording reproduction method  
An optical head according to the present invention includes: a first light source for emitting light with a first wavelength; a second light source for emitting light with a second wavelength...
6639889 Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats  
A recording/reproducing apparatus including an optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least...
6600704 Apparatus for scanning optical recording media having different information carrier layers  
An apparatus for simultaneously reading from or writing to different information carrier layers of an optical recording medium having at least two different information carrier layers, the...
6556533 Optical pickup device  
In an optical pickup device for recording information onto and/or reading out information from an optical recording medium, comprising a light beam source for generating a light beam to be...
6552990 Optical head for two different disk thicknesses with a light beam diameter control device  
An optical pickup device which includes a semiconductor laser selectively generating a laser beam with a wavelength of 635 nm, a laser beam with a wavelength of 780 nm, and an optical device having...
6552974 Compatible optical pickup  
An optical pickup compatible between a digital video disc read only memory (DVD-ROM) and a compact disc rewritable (CD-RW), which is a member of the CD family media. The compatible optical pickup...
6504812 Optical pickup device with a plurality of laser couplers  
An optical pickup device with the capability to read data from and write data to different kinds of optical discs in different formats and a composite optical device used in the optical pickup...
6442124 Compatible optical pick-up apparatus for recording and reproducing information from recording media having different formats  
An optical pick-up apparatus for recording and reproducing information from recording media using a first, second, and third light source to emit light beams having various wavelengths...
EP0881635B1 An optical head and an optical disk apparatus  
Abstract of EP0881635 An optical head has a first light source; a second light source; a transmitting and reflecting means having a first surface and a second surface, and used to reflect...
6392977 Optical pickup with a hologram to limit the aperture of two light beams with different wavelengths  
An optical pickup device that is able to record/reproduce information signals for first and second optical discs with different recording capacities. The optical pickup device includes an objective...
EP1022731B1 Optical pickup apparatus and information recording/reproducing method  
Abstract of EP1022731 An optical pickup apparatus for reproducing information from an optical information recording medium (20) or for recording information onto an optical information recording...
6366548 Optical pickup having two laser beam sources having wave lengths different from each other and optical device including the optical pickup  
An optical pickup of this invention includes a first laser beam source having a wave length of 780 nm and a second laser beam source having a second wave length of 650 nm wherein the first laser...
6363046 Optical recording/pickup head compatible with a digital versatile disk (DVD) and a recordable compact disk (CD-R) using a holographic variable aperture  
An optical recording/pickup head having compatibility with a recordable compact disk (CD-R) and a digital video disk (DVD) transmits a first light beam having a wavelength of 635 nm for a DVD...
6304542 Compact dual wavelength optical pickup head  
A dual wavelength optical pickup head in which as many same parts as possible are used as well to direct light beams incident than light beams reflected from a reflective layer of an optical disk....
6275461 Optical pickup using an optical phase plate  
A recording/reproducing apparatus includes an optical pickup device having an optical phase plate which is compatible with optical recording mediums having different thicknesses, and an optical...
6272098 Optical disk apparatus compatible with different types of mediums and comprising optical path separating means  
A polarizing beam splitter for separating an upstream beam from a downstream beam according to the polarization of an incident beam is provided between first and second light sources emitting laser...
6272096 Optical pickup using an optical phase plate  
An optical pickup apparatus having compatibility with a recodable compact disk (CD-R) and a digital video disk (DVD), which uses a wavelength of one of a first light beam and a second light beam...
6266314 Optical pickup device  
An optical pickup device has a single light beam path in which at least one or either of a plurality of kinds of light beams (different from each other in, for example, wavelength) for respective...
6256283 Optical pickup having a common light beam path for passing either of a plurality of kinds of light beams  
An optical pickup device has a single light beam path for common use in treating or passing either of a plurality of kinds of light beams for respective recording densities and/or...
EP1100078A2 Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element and information recording/reproducing method  
An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a...
Matches 1 - 50 out of 73 1 2 >