DOUBLE-WAVELENGTH LIGHT SOURCE UNIT AND OPTICAL HEAD DEVICE

Details for Australian Patent Application No. 2003280751 (hide)

Owner ASAHI GLASS COMPANY, LIMITED

Inventors MURAKAMI, Ryota; OOI, Yoshiharu

Pub. Number AU-A-2003280751

PCT Number PCT/JP03/14386

PCT Pub. Number WO2004/044905

Priority 2002-329724 13.11.02 JP

Filing date 12 November 2003

Wipo publication date 3 June 2004

International Classifications

G11B 007/09 Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power - with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following

G11B 007/135 Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power - Means for guiding the beam from source to record carrier or from record carrier to detector

Event Publications

4 March 2004 Complete Application Filed

  Priority application(s): 2002-329724 13.11.02 JP

8 July 2004 Application Open to Public Inspection

  Published as AU-A-2003280751

28 July 2005 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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