TW200615931A - Optical scanning device - Google Patents

Optical scanning device

Info

Publication number
TW200615931A
TW200615931A TW094133111A TW94133111A TW200615931A TW 200615931 A TW200615931 A TW 200615931A TW 094133111 A TW094133111 A TW 094133111A TW 94133111 A TW94133111 A TW 94133111A TW 200615931 A TW200615931 A TW 200615931A
Authority
TW
Taiwan
Prior art keywords
writing
reading
incident radiation
scanning device
radiation
Prior art date
Application number
TW094133111A
Other languages
Chinese (zh)
Inventor
Bernardus Hendrikus Wilhelmus Hendriks
Stein Kuiper
Original Assignee
Koninkl Philips Electronics Nv
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 filed Critical Koninkl Philips Electronics Nv
Publication of TW200615931A publication Critical patent/TW200615931A/en

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
    • G11B7/1398—Means for shaping the cross-section of the beam, e.g. into circular or elliptical cross-section
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing

Abstract

An optical scanning device I is described for reading information from and writing information to an optical record carrier 2 such as a CD or a DVD. The device has two modes, a reading mode and a writing mode and can be electrically switched between the two modes in order to provide a system where the optimum parameters of the optics are utilized for reading and writing. The writing mode requires maximum coupling efficiency between incident radiation 12 and the record carrier 2 and low rim intensity of the radiation beam. The reading mode requires maximum rim intensity but low incident radiation power. Accordingly, a cell is positioned on the optical path of the system, the cell 49 containing a fluid 51 that can be moved into and out of the optical path of the radiation to alter the characteristics of the incident radiation accordingly.
TW094133111A 2004-09-28 2005-09-23 Optical scanning device TW200615931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04104711 2004-09-28

Publications (1)

Publication Number Publication Date
TW200615931A true TW200615931A (en) 2006-05-16

Family

ID=35453519

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094133111A TW200615931A (en) 2004-09-28 2005-09-23 Optical scanning device

Country Status (2)

Country Link
TW (1) TW200615931A (en)
WO (1) WO2006035348A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6449081B1 (en) * 1999-06-16 2002-09-10 Canon Kabushiki Kaisha Optical element and optical device having it
US6806988B2 (en) * 2000-03-03 2004-10-19 Canon Kabushiki Kaisha Optical apparatus
DE60335994D1 (en) * 2002-09-19 2011-03-24 Koninkl Philips Electronics Nv SWITCHABLE OPTICAL ELEMENT
JP4376785B2 (en) * 2002-09-19 2009-12-02 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Optical scanning device
US20060072422A1 (en) * 2002-11-20 2006-04-06 Hendriks Robert F M Scanning device including an optical filter
AU2003285668A1 (en) * 2002-12-30 2004-07-22 Koninklijke Philips Electronics N.V. Optical device for recording and reproducing

Also Published As

Publication number Publication date
WO2006035348A1 (en) 2006-04-06

Similar Documents

Publication Publication Date Title
WO2003046898A1 (en) Optical recording medium and recording device for this optical recording medium and recording method
EP1986187A4 (en) Optical recording/reproducing device
TW200511263A (en) Information storage medium
TW200639844A (en) High frequency modulation of a light beam in optical recording
TW200641872A (en) Optical recording medium
EP1571478A4 (en) Objective lens for optical information recording media
CN102208194A (en) Optical information reproducing device, optical information recording device, and method for recording optical information
WO2001057975A3 (en) Near-field laser and detector apparatus and method
WO2003017263A1 (en) Optical head device, and optical information recording and reproducing device
TW200641864A (en) Objective lens, optical pickup apparatus and optical information recording and/or reproducing apparatus
PL342819A1 (en) Methods of determining optimum recording and erasing power as well as apparatus incorporating devices employing such methods
AU2003279473A1 (en) Optical record carrier recording apparatus
TW200717507A (en) Optical pickup apparatus and optical information recording and/or reproducing apparatus
TW200709193A (en) Method for optimizing write parameter and recording device for optical storage medium
TW200615931A (en) Optical scanning device
EP1256942A3 (en) Disk drive device
TW200710841A (en) Compatible optical pickup and optical recording and/or reproducing apparatus employing the same
AU2003233095A1 (en) Device for scanning and cleaning an information carrier
MY136498A (en) High density read only optical disc
EP1811512A4 (en) Optical information recording/reproducing device
CN1981334A (en) Optical pickup
MX2009003297A (en) Compatible optical recording medium.
TW200620256A (en) Optical recording/reproducing apparatus
TW200641859A (en) Optical pickup, optical recording and/or reproducing apparatus using the same, and method for detecting tracking error signal
AU2003280081A1 (en) Optical information recording medium