Brevet : EP0888615 - DISQUE OPTIQUE DE MEMORISATION DE DONNEES

Titre

DISQUE OPTIQUE DE MEMORISATION DE DONNEES

N° et date de publication de la demande

EP0888615 - 07/01/1999

Type de la demande

A1

N° et date de dépôt

EP97908375.5 - 19/03/1997

N° et date de priorité

GB9605729 - 19/03/1996

Famille de brevets

US6160789A ; KR20000064663A ; ES2160326T3 ; WO9735307A1 ; EP0888615A1 ; JP2000507024A ; HK1019500A1 ; PT888615E ; DE69704854T2 ; CA2249255A1 ; AU2035397A ; ATE201278T1 ; GR3036363T3 ; CN1214144A ; DK0888615T3

Abrégé

PCT No. PCT/GB97/00768 Sec. 371 Date Oct. 26, 1998 Sec. 102(e) Date Oct. 26, 1998 PCT Filed Mar. 19, 1997 PCT Pub. No. WO97/35307 PCT Pub. Date Sep. 25, 1997An optical data storage disc having a first component disc formed over one side with a pattern of indentations defining digital data, the indented side of the first component disc being provided with a reflective coating, and a second component disc being bonded to the indented side of the first component disc. The second component disc carries a surface relief pattern having continuous variations in depth over a range of depths, and defining a holographic, or other optically variable, image.