GB2344928A - Aperture stop for a flying optical head - Google Patents

Aperture stop for a flying optical head

Info

Publication number
GB2344928A
GB2344928A GB0005695A GB0005695A GB2344928A GB 2344928 A GB2344928 A GB 2344928A GB 0005695 A GB0005695 A GB 0005695A GB 0005695 A GB0005695 A GB 0005695A GB 2344928 A GB2344928 A GB 2344928A
Authority
GB
United Kingdom
Prior art keywords
aperture stop
optical head
flying optical
lens
slider body
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.)
Granted
Application number
GB0005695A
Other versions
GB2344928B (en
GB0005695D0 (en
Inventor
Nicholas Jordache
Ronald E Gerber
Ghanim A Al-Jumaily
Edward C Gage
Lori G Swanson
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.)
Seagate Technology LLC
Original Assignee
Seagate Technology LLC
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 Seagate Technology LLC filed Critical Seagate Technology LLC
Publication of GB0005695D0 publication Critical patent/GB0005695D0/en
Publication of GB2344928A publication Critical patent/GB2344928A/en
Application granted granted Critical
Publication of GB2344928B publication Critical patent/GB2344928B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/122—Flying-type heads, e.g. analogous to Winchester type in magnetic recording
    • 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
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
    • 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
    • G11B7/139—Numerical aperture control means
    • 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
    • G11B7/22—Apparatus or processes for the manufacture of optical heads, e.g. assembly

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)

Abstract

An optical head (100) for performing optical data operations relative to a medium (118) includes a slider body (154) and at least one lens (150). Positioned between the slider body (154) and the lens (150) is an aperture stop (158) for blocking the transmittance of light. The aperture stop (158) includes an opaque layer that circumscribes a transparent region.
GB0005695A 1997-09-22 1998-01-26 Aperture stop for a flying optical head Expired - Fee Related GB2344928B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5946997P 1997-09-22 1997-09-22
PCT/US1998/001424 WO1999016063A1 (en) 1997-09-22 1998-01-26 Aperture stop for a flying optical head

Publications (3)

Publication Number Publication Date
GB0005695D0 GB0005695D0 (en) 2000-05-03
GB2344928A true GB2344928A (en) 2000-06-21
GB2344928B GB2344928B (en) 2002-02-20

Family

ID=22023155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0005695A Expired - Fee Related GB2344928B (en) 1997-09-22 1998-01-26 Aperture stop for a flying optical head

Country Status (6)

Country Link
JP (1) JP2001517851A (en)
KR (1) KR20010024235A (en)
CN (1) CN1271453A (en)
DE (1) DE19882689T1 (en)
GB (1) GB2344928B (en)
WO (1) WO1999016063A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000033298A2 (en) * 1998-12-04 2000-06-08 Terastor Corporation Monolithic optical head
JP2004348854A (en) * 2003-05-22 2004-12-09 Sankyo Seiki Mfg Co Ltd Optical head device
KR100536680B1 (en) * 2003-05-31 2005-12-14 주식회사 대우일렉트로닉스 Holographic rom system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5198916A (en) * 1991-05-13 1993-03-30 Samsung Electronics Co., Ltd. Optical pickup
US5361244A (en) * 1991-04-10 1994-11-01 Hitachi, Ltd. Optical head and information recording apparatus
US5615203A (en) * 1993-12-20 1997-03-25 Matsushita Electric Industrial Co., Ltd. Floating-type optical head having incorporated therein a floating slider and an optical device which floats with the slider, includes a light source, condensing unit and photodetector and is supported movably relative to the floating slider
US5659533A (en) * 1996-07-23 1997-08-19 Sampo Corporation Method of using a single pick-up head to read and store data on discs of different thicknesses and structure of a pick-up head apparatus therefor
US5680252A (en) * 1995-03-23 1997-10-21 Martin Marietta Energy Systems, Inc. Miniature hybrid optical imaging lens
US5727111A (en) * 1995-06-19 1998-03-10 Sony Corporation Optical pick-up and light detecting cover therefor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5361244A (en) * 1991-04-10 1994-11-01 Hitachi, Ltd. Optical head and information recording apparatus
US5198916A (en) * 1991-05-13 1993-03-30 Samsung Electronics Co., Ltd. Optical pickup
US5615203A (en) * 1993-12-20 1997-03-25 Matsushita Electric Industrial Co., Ltd. Floating-type optical head having incorporated therein a floating slider and an optical device which floats with the slider, includes a light source, condensing unit and photodetector and is supported movably relative to the floating slider
US5680252A (en) * 1995-03-23 1997-10-21 Martin Marietta Energy Systems, Inc. Miniature hybrid optical imaging lens
US5727111A (en) * 1995-06-19 1998-03-10 Sony Corporation Optical pick-up and light detecting cover therefor
US5659533A (en) * 1996-07-23 1997-08-19 Sampo Corporation Method of using a single pick-up head to read and store data on discs of different thicknesses and structure of a pick-up head apparatus therefor

Also Published As

Publication number Publication date
GB2344928B (en) 2002-02-20
CN1271453A (en) 2000-10-25
WO1999016063A1 (en) 1999-04-01
DE19882689T1 (en) 2000-09-28
KR20010024235A (en) 2001-03-26
GB0005695D0 (en) 2000-05-03
JP2001517851A (en) 2001-10-09

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110126