Global Patent Index - EP 1254453 A2

EP 1254453 A2 2002-11-06 - LOW PROFILE OPTICAL HEAD

Title (en)

LOW PROFILE OPTICAL HEAD

Title (de)

OPTISCHER KOPF MIT NIEDRIGEM PROFIL

Title (fr)

TETE OPTIQUE A PROFIL BAS

Publication

EP 1254453 A2 (EN)

Application

EP 00982448 A

Priority

  • US 0033014 W
  • US 45710499 A
  • US 54065700 A

Abstract (en)

[origin: WO0143126A2] An optical head of a type useable in a optical disk reader/writer is provided. The optical head has a low profile, e.g., in a vertical direction parallel to the disk spin axis, such as less than about 5mm preferably less than about 3mm. Substantially all components of the optical system, including a laser source, objective lens, intervening optics and photo detector are provided in the optical head and mounted in a fixed position with respect to one another. Substantially all optical components of the optical head are moved as a unit, e.g., during tracking and/or focusing. Preferably, the optical head is fabricated using wafer scale and/or stacking technologies, e.g., stacking substantially planar components to achieve the final optical head configuration.

IPC 1-7 (main, further and additional classification)

G11B 7/12

IPC 8 full level (invention and additional information)

G11B 7/09 (2006.01); G11B 7/12 (2012.01); G11B 7/22 (2006.01)

CPC (invention and additional information)

G11B 7/22 (2013.01); G11B 7/123 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT

EPO simple patent family

WO 0143126 A2 20010614; WO 0143126 A8 20011115; AU 1947501 A 20010618; CA 2358913 A1 20010614; CN 100392736 C 20080604; CN 1421034 A 20030528; EP 1254453 A2 20021106; JP 2003523036 A 20030729; MX PA01008041 A 20030801; TW 550561 B 20030901

INPADOC legal status


2008-12-24 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20080701

2003-10-01 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: DPHI AQUISITIONS, INC.

2002-11-06 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010904

2002-11-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT

2002-11-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI