WO2006070329A3 - Dual layer readout with improved tolerances - Google Patents

Dual layer readout with improved tolerances Download PDF

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Publication number
WO2006070329A3
WO2006070329A3 PCT/IB2005/054386 IB2005054386W WO2006070329A3 WO 2006070329 A3 WO2006070329 A3 WO 2006070329A3 IB 2005054386 W IB2005054386 W IB 2005054386W WO 2006070329 A3 WO2006070329 A3 WO 2006070329A3
Authority
WO
WIPO (PCT)
Prior art keywords
radius
radiation beam
optical
dual layer
improved tolerances
Prior art date
Application number
PCT/IB2005/054386
Other languages
French (fr)
Other versions
WO2006070329A2 (en
Inventor
Bernardus H W Hendriks
Stein Kuiper
Original Assignee
Koninkl Philips Electronics Nv
Bernardus H W Hendriks
Stein Kuiper
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 Koninkl Philips Electronics Nv, Bernardus H W Hendriks, Stein Kuiper filed Critical Koninkl Philips Electronics Nv
Publication of WO2006070329A2 publication Critical patent/WO2006070329A2/en
Publication of WO2006070329A3 publication Critical patent/WO2006070329A3/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/004—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid
    • G02B26/005—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid based on electrowetting
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/12—Fluid-filled or evacuated lenses
    • G02B3/14—Fluid-filled or evacuated lenses of variable focal length
    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G11B7/1369—Active plates, e.g. liquid crystal panels or electrostrictive elements
    • 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
    • G11B7/1376—Collimator 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
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical 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
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1288—Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2541—Blu-ray discs; Blue laser DVR discs

Abstract

An optical scanning device for scanning an optical record carrier (OD) with an objective lens (12) for converging a radiation beam to a spot (18) on an information layer (3,4) of the record carrier (OD) , and an optical correcting system (10, 100) for changing the vergence of the radiation beam and the amount of spherical aberration in the radiation beam towards the objective lens, wherein the vergence and the amount of spherical aberration in the radiation beam can be adapted independently. The optical correcting system (10, 100) comprises a set of fluids (A, B) having a first meniscus (114, 136) having a first radius and a second meniscus (115, 138) having a second radius, the first radius and second radius being separately adaptable.
PCT/IB2005/054386 2004-12-29 2005-12-22 Dual layer readout with improved tolerances WO2006070329A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04107033 2004-12-29
EP04107033.5 2004-12-29

Publications (2)

Publication Number Publication Date
WO2006070329A2 WO2006070329A2 (en) 2006-07-06
WO2006070329A3 true WO2006070329A3 (en) 2006-08-31

Family

ID=36499280

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/054386 WO2006070329A2 (en) 2004-12-29 2005-12-22 Dual layer readout with improved tolerances

Country Status (2)

Country Link
TW (1) TW200638067A (en)
WO (1) WO2006070329A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006131882A1 (en) * 2005-06-10 2006-12-14 Koninklijke Philips Electronics N.V. Variable fluid lens having two menisci
CN101506880A (en) 2006-08-15 2009-08-12 皇家飞利浦电子股份有限公司 Spherical aberration compensation adjustment

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0756273A1 (en) * 1990-12-21 1997-01-29 Koninklijke Philips Electronics N.V. Multi-layer information storage system
WO2001024174A1 (en) * 1999-09-30 2001-04-05 Koninklijke Philips Electronics N.V. Optical scanning device
US20020122375A1 (en) * 2000-12-11 2002-09-05 Hendriks Bernardus Hendrikus Wilhelmus Device for reading and/or writing a record carrier
WO2004027769A1 (en) * 2002-09-19 2004-04-01 Koninklijke Philips Electronics N.V. Optical scanning device
WO2004050334A1 (en) * 2002-12-03 2004-06-17 Koninklijke Philips Electronics N.V. Manufacturing of lens elements
WO2004077125A2 (en) * 2003-02-25 2004-09-10 Koninklijke Philips Electronics N.V. Improvements in and relating to fluid filled devices
WO2004084188A2 (en) * 2003-03-20 2004-09-30 Koninklijke Philips Electronics N.V. Optical scanning device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0756273A1 (en) * 1990-12-21 1997-01-29 Koninklijke Philips Electronics N.V. Multi-layer information storage system
WO2001024174A1 (en) * 1999-09-30 2001-04-05 Koninklijke Philips Electronics N.V. Optical scanning device
US20020122375A1 (en) * 2000-12-11 2002-09-05 Hendriks Bernardus Hendrikus Wilhelmus Device for reading and/or writing a record carrier
WO2004027769A1 (en) * 2002-09-19 2004-04-01 Koninklijke Philips Electronics N.V. Optical scanning device
WO2004050334A1 (en) * 2002-12-03 2004-06-17 Koninklijke Philips Electronics N.V. Manufacturing of lens elements
WO2004077125A2 (en) * 2003-02-25 2004-09-10 Koninklijke Philips Electronics N.V. Improvements in and relating to fluid filled devices
WO2004084188A2 (en) * 2003-03-20 2004-09-30 Koninklijke Philips Electronics N.V. Optical scanning device

Also Published As

Publication number Publication date
TW200638067A (en) 2006-11-01
WO2006070329A2 (en) 2006-07-06

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