| 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 |
| 7362693 |
Near-field optical storage medium and optical data storage system therefor |
April 22, 2008 |
| An optical data storage system writes or reads information with respect to an optical storage medium using an optical pickup including a solid immersion optical system or a solid immersion lens for generating a near-field and emitting a light beam. The optical storage medium includes |
| 7200098 |
Objective lens for high-density optical focusing and an optical disk in an optical pickup |
April 3, 2007 |
| An optical pickup includes a light source emitting a laser beam and an optical path changing unit altering a traveling path of an incident beam. An objective lens, disposed on an optical path between the optical path changing unit and an optical disk, focuses the incident beam from the |
| 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 |
| 7054259 |
Near-field optical storage medium and optical data storage system therefor |
May 30, 2006 |
| An optical data storage system writes or reads information with respect to an optical storage medium using an optical pickup including a solid immersion optical system or a solid immersion lens for generating a near-field and emitting a light beam. The optical storage medium includes |
| 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 |
| 6938890 |
Objective lens for high-density optical focusing and an optical disk in an optical pickup |
September 6, 2005 |
| An optical pickup includes a light source emitting a laser beam and an optical path changing unit altering a traveling path of an incident beam. An objective lens, disposed on an optical path between the optical path changing unit and an optical disk, focuses the incident beam from the |
| 6914858 |
Optical pickup for high density recording/reproduction and method to detect a reproduction signa |
July 5, 2005 |
| An optical pickup for high density recording and reproduction, and a reproduction signal detection method, which prevent degradation of a reproduction signal due to shot noise which occurs when a low optical power light is used to form a small light spot for high density reproduction |
| 6899937 |
Optical disc |
May 31, 2005 |
| An optical disc includes a substrate having micro-embossments, in which flat portions referred to as lands, and track guides, referred to as hills, and which protrude from the surfaces of the flat portions are formed. A reflective layer is formed on the substrate, a dielectric layer |
| 6885625 |
Near-field optical storage medium and optical data storage system therefor |
April 26, 2005 |
| An optical data storage system writes or reads information with respect to an optical storage medium using an optical pickup including a solid immersion optical system or a solid immersion lens for generating a near-field and emitting a light beam. The optical storage medium includes |
| 6798732 |
Near-field optical storage medium and optical data storage system therefor |
September 28, 2004 |
| An optical data storage system writes or reads information with respect to an optical storage medium using an optical pickup including a solid immersion optical system or a solid immersion lens for generating a near-field and emitting a light beam. The optical storage medium includes |
| 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 |
| 6657942 |
Optical recording and reproducing apparatus having floating swing arm and optical disk for use t |
December 2, 2003 |
| A swing-arm type optical recording and reproducing apparatus and an optical disk applicable to the same. The optical disk includes a substrate having an information recording surface to record and reproduce an information signal, and a protective layer which is provided on the informatio |
| 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 |
| 6590853 |
Swing arm driving type optical recording/reproducing apparatus |
July 8, 2003 |
| A swing arm driving type optical recording/reproducing apparatus includes a base, at least one optical disk rotatably installed on the base, both sides of which are information recording surfaces and a plurality of optical pickups which are equal in number to the information recording |
| 6547398 |
Projection-type image display apparatus and method |
April 15, 2003 |
| A projection-type image display apparatus having a structure adapted so that the efficiency of the use of light and resolving power thereof can be enhanced. The projection-type image display apparatus includes a light source; a color separation unit separating incident rays according to |
| 6510126 |
Optical disc having textured structure, and a method of manufacturing the optical disc |
January 21, 2003 |
| An optical disc for an optical near-field recording having a surface with a textured structure formed with a plurality of bumps and craters, and a method of manufacturing the optical disc. An optical flying head has a slider which contacts the bumps when in a parking zone (non-moving sta |
| 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 |
| 6359850 |
Optical pickup having catadioptric objective lens |
March 19, 2002 |
| An optical pickup in which a light receptor and a light transmitter are integrated with a catadioptric objective lens. The optical pickup includes a unit for emitting laser light to a recording medium and detecting the light reflected from the recording medium. The catadioptric objective |
| 6337841 |
Compatible optical pickup |
January 8, 2002 |
| A compatible optical pickup capable of recording or reproducing information on or from compact disc (CD) family media such as CD rewritable (CD-RW) and digital versatile disc (DVD) by adopting a stepped planar lens having a plurality of gratings. The compatible optical pickup includes a |
| 6310841 |
Optical pickup for narrow track optical discs |
October 30, 2001 |
| An optical disc can increase an information storage capacity by reducing the track width of the optical disc. An optical pickup for a narrow track optical disc includes an optical shielding portion having a desired light intensity distribution with respect to a target track and the track |
| 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 |
| 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 |
| 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 |
| 6114689 |
Optical pickup device |
September 5, 2000 |
| An optical pickup device includes a light module, emitting light and receiving light reflected from a recording medium, and a solid immersion lens (SIL) member disposed in an optical path between the light module and the recording medium. The SIL has a planar surface facing the recording |
| 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 |
| 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 |
| 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 |
| 5907530 |
Optical pickup device |
May 25, 1999 |
| An optical pickup device which is capable of reproducing and recording information from at least two 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 predetermined |
| 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 |
| 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 |
| 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 |
| 5665957 |
Lens device comprising light blocking means and an optical pickup apparatus using the lens devic |
September 9, 1997 |
| 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 |
