| Patent Number |
Title Of Patent |
Date Issued |
| RE39025 |
Lens device including a light controlling mechanism and an optical pickup apparatus using a lens |
March 21, 2006 |
| A lens device which can be used as an objective lens in an optical pickup apparatus includes an objective lens provided along a light path facing a disc and having a predetermined effective diameter, and light controlling means provided along the light path for controlling the light in a |
| 7117542 |
Headwear and sweatband with stretch stitch line |
October 10, 2006 |
| The present invention discloses a headwear having a crown adapted to cover the top of a wearer's head, and a brim formed in a predetermined shape at the lower peripheral edge of the crown, and a rim formed along the inner peripheral surface of the lower peripheral edge of the crown, wher |
| 7072114 |
Optical pickup using an optical phase plate and which is compatible with optical recording media |
July 4, 2006 |
| 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 objective lens having a focal length of an information recording surface in the DVD, an optica |
| 6985293 |
Optical pickup using an optical phase plate and which is compatible with optical media for diffe |
January 10, 2006 |
| 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 objective lens having a focal length of an information recording surface in the DVD, an optica |
| 6882614 |
Recording/reproducing apparatus having an optical pickup device to read from and record informat |
April 19, 2005 |
| 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 pickup having an objective lens, disposed opposite a disk, having a light passing region |
| 6816449 |
Optical pickup compatible with a digital versatile disk and a recordable compact disk using a ho |
November 9, 2004 |
| 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 optical pickup apparatus including two laser light sources to emit light beams having the differ |
| 6791933 |
Optical pickup using an optical phase plate |
September 14, 2004 |
| 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 according to the recording medium to be used. In the optical pickup apparatus, laser light so |
| 6788636 |
Optical pickup compatible with a digital versatile disk and a recordable compact disk using a ho |
September 7, 2004 |
| 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 optical pickup apparatus including two laser light sources to emit light beams having the differ |
| 6650469 |
Objective lens formed of a single lens and having high numerical aperture and an optical pickup |
November 18, 2003 |
| An optical pickup apparatus having an objective lens which is formed of a single lens such that the maximum slope angle of a surface of the lens is less than 55.degree. with respect to a high NA of 0.7 or more. The objective lens can be manufactured to satisfy a condition of allowance in |
| 6639889 |
Recording/reproducing apparatus including an optical pickup having an objective lens compatible |
October 28, 2003 |
| 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 one light source, an objective lens having a function of focusing light emitted from t |
| 6567366 |
Optical pickup using laser light of different wavelengths to record and reproduce information to |
May 20, 2003 |
| An optical pickup records information on a recordable and reproducible disk and reads information therefrom. The optical pickup includes a laser light source for emitting first laser light in case of a reproduction mode for reproducing information from the disk and emitting second laser |
| 6480222 |
Semiconductor laser and flying optical pickup for recording/reproducing using the same |
November 12, 2002 |
| A semiconductor laser for generating a laser beam and an optical pickup for recording/reproducing information using the semiconductor laser as an optical source are provided. The semiconductor laser includes an aperture member on an emitting end thereof to perform high-density memory |
| 6430139 |
Objective lens for high-density optical focusing, and optical pickup using the same |
August 6, 2002 |
| A high-density focusing objective lens having a high numerical aperture (NA), which can be easily manufactured by an existing technique, and an optical pickup using the objective lens for high-density recording. The objective lens includes a first transmitting portion placed at a rel |
| 6400666 |
Optical pickup device |
June 4, 2002 |
| An optical pickup device includes a light source for generating and emitting light, optical path changing means for changing a proceeding path of incident light, an objective lens for focusing incident light on a recording medium which has a recording surface where information is rec |
| 6396638 |
Optical pickup device capable of stable tracking |
May 28, 2002 |
| An optical pickup device includes a light source for generating light, a light path changing means for changing the traveling path of incident light, an objective lens for focusing incident light to form a light spot on a recording medium and having an incidence region of a predetermined |
| 6363046 |
Optical recording/pickup head compatible with a digital versatile disk (DVD) and a recordable co |
March 26, 2002 |
| 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 emitted from a first light source and a second light beam having a wavelength of 780 nm for a CD |
| 6345029 |
Optical pickup apparatus and method |
February 5, 2002 |
| An optical pickup apparatus and method which can selectively perform optical pickup with respect to at least two types of optical disks, on which information recording surfaces are formed, having a different thickness. The optical pickup apparatus includes an optical path alteration |
| 6285646 |
Optical pickup using objective lens compatible with a plurality of optical disks |
September 4, 2001 |
| An optical pickup device including an objective lens which is compatible with a plurality of optical disks of respectively different specifications, such as a digital versatile disk (DVD), a compact disk-recordable (CD-R) medium, a compact disk (CD) and a laser disk (LD). The optical |
| 6275461 |
Optical pickup using an optical phase plate |
August 14, 2001 |
| 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 signal processing device processes information read from the optical recording mediums and |
| 6272096 |
Optical pickup using an optical phase plate |
August 7, 2001 |
| 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 according to the recording medium to be used. In the optical pickup apparatus, laser light so |
| 6259668 |
Recording/reproducing apparatus having an optical pickup device to read from and record informat |
July 10, 2001 |
| 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 pickup having an objective lens, disposed opposite a disk, having a light passing region |
| 6233217 |
Optical pickup for recording/reproduction with a light emitting diode light source |
May 15, 2001 |
| An optical pickup for recording/reproduction. The optical pickup includes a light source unit including a light emitting diode (LED) to emit light and a waveguide to condense the light emitted from the LED; a collimating lens to collimate the light emitted from the waveguide; an objectiv |
| 6222812 |
Optical pickup using an optical phase plate |
April 24, 2001 |
| 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 according to the recording medium to be used. In the optical pickup apparatus, laser light so |
| 6212154 |
Optical pickup for optical disk and light source for optical pickup |
April 3, 2001 |
| An optical pickup using a light-emitting diode (LED), which is capable of forming a light spot of an appropriate size for high-density recording/reproduction. The optical pickup includes a light-emitting diode (LED) to generate and emit light; a condensing unit to condense the light |
| 6198714 |
Optical pickup having an objective lens compatible with a plurality of optical disk formats |
March 6, 2001 |
| An optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least one light source, an objective lens having a function of focusing light emitted from the light source into the optimal light spot on a |
| 6147955 |
Optical pickup device to read from and record information to disks of different thicknesses |
November 14, 2000 |
| An optical pickup device which is efficient in light use having little spherical aberration. The optical pickup device of an optical pickup includes an objective lens, disposed opposite a disk, having a light passing region divided into central, intermediate and periphery regions cor |
| 6091691 |
Optical pickup having an objective lens compatible with a plurality of optical disk formats |
July 18, 2000 |
| An optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least one light source, an objective lens, and a light detector. The objective lens has an inner area, an annular lens area and an outer are |
| 6088170 |
Optical system for shaping light beams and an optical pickup employing the same |
July 11, 2000 |
| A beam-shaping optical system includes a light source, a plurality of plates, and a cylindrical lens disposed between the light source and the plurality of plates, wherein the plurality of plates and the cylindrical lens have an optical feature in which the light output from the light |
| 6081498 |
Optical pickup compatible with recordable compact disk and digital video disk using plane parall |
June 27, 2000 |
| An optical pickup is compatible with at least two types of optical recording media each using light beams having different wavelengths from one another and which are used for recording and reproducing information. The optical pickup includes a first laser light source for emitting a |
| 6078555 |
Optical head assembly having compatibility with digital versatile disk (DVD) and a recordable co |
June 20, 2000 |
| An optical head assembly having compatibility with a recordable compact disk (CD-R) and a digital video disk (DVD) includes a stationary first optical unit and a second optical unit which moves to a position to change the target sector of an optical disk loaded in an optical disk driver |
| 6043912 |
Optical pickup compatible with a digital versatile disk and a recordable compact disk using a ho |
March 28, 2000 |
| 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 optical pickup apparatus including two laser light sources to emit light beams having the differ |
| 6016293 |
Method of discriminating discs having different thickness and optical pickup device adopting the |
January 18, 2000 |
| A disc discriminating method and an objective lens adopting the same, in which fast disc type discrimination and stable reproduction signal generation is performed. The method includes the steps of increasing and decreasing a focus voltage applied to an actuator of an objective lens |
| 6009066 |
Optical pickup of two different wavelength laser sources with an objective lens having an annula |
December 28, 1999 |
| An optical pickup compatible with at least two types of optical recording media using light beams having respectively different wavelengths for recording and reproducing information. In the optical pickup, a first laser light source emits a light beam having a relatively shorter wave |
| 5991254 |
Optical pickup having a multi-coated polarization holographic element |
November 23, 1999 |
| An optical pickup adopting a multi-coated polarization holographic optical element (HOE). The optical pickup has a light source, an objective lens for converging light emitted from the light source on a recording medium, a holographic optical element (HOE) arranged along an optical path |
| 5987924 |
Lens mold and method of manufacturing a lens |
November 23, 1999 |
| A lens device which can be used as an objective lens in an optical pickup apparatus includes an objective lens provided along a light path facing a disc and having a predetermined effective diameter, and light controlling means provided along the light path for controlling the light in a |
| 5986993 |
Optical pickup device having a diaphram with a predetermined aperture |
November 16, 1999 |
| An optical pickup device which can obtain a stable reproduction signal by increasing the numerical aperture of an objective lens includes an objective lens facing a disc, a light source for radiating light to the disc via the objective lens, a beam splitter provided between the light |
| 5933401 |
Optical pickup having plural optical sources and plural optical detectors |
August 3, 1999 |
| An optical pickup capable of compatibly adopting disks of different formats which are placed in an optical player includes a first optical source for emitting light having a predetermined wavelength, a second optical source for emitting light having a wavelength different from that of li |
| 5909424 |
Optical pickup device and method to read from and record information to disks of different thick |
June 1, 1999 |
| An optical pickup device which is efficient in light use having little spherical aberration. The optical pickup device of an optical pickup includes an objective lens, disposed opposite a disk, having a light passing region divided into central, intermediate and periphery regions cor |
| 5903536 |
Objective lens device, optical pickup adopting the same and method for manufacturing an objectiv |
May 11, 1999 |
| An objective lens for reproducing/recording information from/onto discs having different thicknesses and an optical pickup device adopting the same. The objective lens device includes an objective lens provided along a light path facing a plane of a disc and having a predetermined effect |
| 5872760 |
Optical pickup for correcting an astigmatic difference of light |
February 16, 1999 |
| An optical pickup for correcting an astigmatic difference of a light by using a collimating lens arranged at an angle with respect to the thickness direction of an active layer of a light source and parallel to the width direction of the active layer, for collimating the light emitted |
| 5870369 |
Objective lens device including an objective lens and a transparent member having two light cont |
February 9, 1999 |
| An objective lens device having two light control surfaces and an optical pickup able to adopt disks having different thicknesses as a recording medium. The objective lens device includes an objective lens arranged along an optical path parallel to the disks, and first and second control |
| 5841754 |
Optical pickup device having an objective lens and auxiliary lenses exterior thereof |
November 24, 1998 |
| An optical pickup device which can obtain a stable reproduction signal by an increased numerical aperture of an objective lens. The optical pickup device includes an objective lens unit having an objective lens facing a disc and having a predetermined effective diameter and at least two |
| 5822135 |
Lens device including a light controlling mechanism and an optical pickup apparatus using a lens |
October 13, 1998 |
| A lens device which can be used as an objective lens in an optical pickup apparatus includes an objective lens provided along a light path facing a disc and having a predetermined effective diameter, and light controlling means provided along the light path for controlling the light in a |
| 5805556 |
Optical pickup apparatus having a holographic optical element |
September 8, 1998 |
| An optical pickup apparatus for recording and reproducing information, which is manufactured to be extremely small in a hybrid type. The optical pickup apparatus includes a first holographic optical element as a beam expander for diffracting to enlarge a diverging angle of an incident be |
| 5802037 |
Optical detector with two detecting regions for reproducing and recording information on two kin |
September 1, 1998 |
| An optical pickup device which is capable of reproducing and recording information from/onto at least two kinds of discs having different thicknesses includes a light source, an objective lens provided along the light path from the light source facing the plane of a disc and having a |
| 5796700 |
Optical pickup to circularize light emitted from a light source |
August 18, 1998 |
| An optical pickup having a beam shaping device for changing an oval-shaped light beam emitted from a light source into a circular light beam, and an astigmatic difference correcting device for correcting the astigmatic difference of the light is provided. The beam shaping device is a |
| 5793407 |
Method and apparatus for forming a light spot smaller than a theoretical limit for high density |
August 11, 1998 |
| A high density recording method for performing high density recording by reducing a light spot size in an optical pickup for recording information by scanning an optical disk with the light spot, spatially controlling the phase or the intensity of light being focused within the optical f |
| 5777973 |
Reproducing and recording optical pickup compatible with discs having different thicknesses |
July 7, 1998 |
| A reproducing/recording optical pickup compatible with discs having different thicknesses includes a transparent plate having a central portion formed with a diffraction grating pattern for diffracting the light travelling from the light source to the objective lens, and a transparen |
| 5748356 |
Optical scanning apparatus |
May 5, 1998 |
| An optical scanning apparatus has an F-.theta. function with one aspherical lens having a toric configuration that compensates for the vibration of a rotating polygon mirror. The optical scanning apparatus includes a laser diode as the source of light, a collimator lens, a compound prism |
| 5748172 |
Mirror driving method and apparatus of micro-mirror array |
May 5, 1998 |
| In a mirror driving method of a micro-mirror array and an apparatus thereof, each of a plurality of mirrors is pivotally supported by hinges fixed to a substrate, and a permanent magnet is attached beneath the substrate to form a magnetic field about the mirrors. A coiled conductive |
