OPTICAL PICKUP-USE OBJECT LENS, OPTICAL PICKUP AND OPTICAL DISK UNIT

Details for Australian Patent Application No. 2002234927 (hide)

Owner SONY CORPORATION

Inventors TAKAHASHI, Toyokazu; HINENO, Satoshi

Pub. Number AU-A-2002234927

PCT Pub. Number WO2002/069014

Priority 2001-54219 28.02.01 JP; 2001-208194 09.07.01 JP

Filing date 28 February 2002

Wipo publication date 12 September 2002

International Classifications

G02B 013/00 Optical objectives specially designed for the purposes specified below

G02B 013/18 Optical objectives specially designed for the purposes specified below - with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

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

6 March 2003 Application Open to Public Inspection

  Published as AU-A-2002234927

12 February 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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