Global Patent Index - EP 1038200 A1

EP 1038200 A1 2000-09-27 - A DIFFRACTIVE DEVICE WITH THREE-DIMENSIONAL EFFECTS

Title (en)

A DIFFRACTIVE DEVICE WITH THREE-DIMENSIONAL EFFECTS

Title (de)

EIN DIFFRAKTIVES BAUELEMENT MIT DREIDIMENSIONALEN EFFEKTEN

Title (fr)

DISPOSITIF DE DIFFRACTION A EFFETS TRIDIMENSIONNELS

Publication

EP 1038200 A1 (EN)

Application

EP 98960872 A

Priority

  • AU 9801014 W
  • AU PP081797 A

Abstract (en)

[origin: WO9930200A1] A diffractive device has a surface relief structure which, when illuminated by a light source, generates two or more diffraction images which, when observed by an observer from an appropriate range of viewing angles, appear as one or more three-dimensional images. Preferably, a left-eye diffraction image is generated by light diffracted from a plurality of surface regions each of which has a diffractive structure with a first orientation, and a right-eye diffraction image is generated by light diffracted from a plurality of surface regions each of which has a diffractive structure with a second orientation which differs in angle from the first orientation, and the two diffraction images when viewed by an observer from an appropriate range of viewing angles appear as a single three-dimensional image.

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

G02B 27/22; G02B 27/42

IPC 8 full level (invention and additional information)

G02B 5/18 (2006.01)

CPC (invention and additional information)

G02B 5/1842 (2013.01)

Citation (search report)

See references of WO 9930200A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9930200 A1 19990617; AU PP081797 D0 19980108; EP 1038200 A1 20000927

INPADOC legal status


2004-03-31 [18W] WITHDRAWN

- Effective date: 20040119

2000-09-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000525

2000-09-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB