GB9708506D0 - Optical pickup device - Google Patents

Optical pickup device

Info

Publication number
GB9708506D0
GB9708506D0 GBGB9708506.2A GB9708506A GB9708506D0 GB 9708506 D0 GB9708506 D0 GB 9708506D0 GB 9708506 A GB9708506 A GB 9708506A GB 9708506 D0 GB9708506 D0 GB 9708506D0
Authority
GB
United Kingdom
Prior art keywords
pickup device
optical pickup
optical
pickup
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GBGB9708506.2A
Other versions
GB2312547A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOCKER AIR MAZE Ltd
Original Assignee
LOCKER AIR MAZE Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LOCKER AIR MAZE Ltd filed Critical LOCKER AIR MAZE Ltd
Publication of GB9708506D0 publication Critical patent/GB9708506D0/en
Publication of GB2312547A publication Critical patent/GB2312547A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1359—Single prisms
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G11B7/1378—Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
GB9708506A 1996-04-26 1997-04-25 Optical pickup device mounted on silicon substrate Withdrawn GB2312547A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960013002A KR0174473B1 (en) 1996-04-26 1996-04-26 An optical pickup device

Publications (2)

Publication Number Publication Date
GB9708506D0 true GB9708506D0 (en) 1997-06-18
GB2312547A GB2312547A (en) 1997-10-29

Family

ID=19456770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9708506A Withdrawn GB2312547A (en) 1996-04-26 1997-04-25 Optical pickup device mounted on silicon substrate

Country Status (3)

Country Link
JP (1) JPH1055568A (en)
KR (1) KR0174473B1 (en)
GB (1) GB2312547A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3696496B2 (en) * 2000-10-10 2005-09-21 アルプス電気株式会社 Composite optical component and composite optical unit using the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950005031B1 (en) * 1986-02-24 1995-05-17 소니 가부시끼가이샤 Device for detecting focus
JP2508478B2 (en) * 1987-02-06 1996-06-19 ソニー株式会社 Optical head
JP2590902B2 (en) * 1987-07-30 1997-03-19 ソニー株式会社 Light-emitting / light-receiving composite element
US5164930A (en) * 1990-07-25 1992-11-17 Pioneer Electronic Corporation Optical pickup

Also Published As

Publication number Publication date
GB2312547A (en) 1997-10-29
KR0174473B1 (en) 1999-04-15
JPH1055568A (en) 1998-02-24
KR970071552A (en) 1997-11-07

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)