Patent ID: 7087283

Claim:
An optical storage medium comprising a three-dimensional data pattern, comprising: a substrate with a first surface; and a plurality of recording layers formed on the first surface, wherein the recording layer comprises a fluorescent oligomer having a formula (I), of: (-Z-X—) n wherein Z is X is n is 2, 3, 4, 5, 6, 7, 8, 9, or 10; Y is O, S, or R 1 , R 2 , R 3 , R 4 , R 5 , R 6 and R 7 are the same or different, and each denotes a hydrogen atom, a saturated or unsaturated alkyl group, an alkoxycarbonyl group, or an alkoxy group, wherein the saturated or unsaturated alkyl group, the alkoxycarbonyl group, or the alkoxy group is straight or branched and has 1 to 20 carbon atoms; and at least one hydrogen atom bonded to the carbon atom of the fluorescent oligomer according to formula (I) is substituted optionally with a halogen atom.