Cover layer technology for the high-NA digital video recording system

M. M.J. Decre, P. H.G.M. Vromans, J. M.J. den Toonder, A. L. Braun, H. A. Wierenga, I. P.D. Ubbens

Research output: Contribution to journalConference articleAcademicpeer-review

2 Citations (Scopus)


Two 100 μm cover layer techniques for high numerical aperture (NA) digital video recording system have been developed. For systems with NA of 0.85 at 650 nm wavelength, the cover layer thickness tolerances of ±3 μm within a single disc, up to radius 58.5 mm, are achievable at an average thickness near 100 μm, using the spin-coating of UV-curable resins, or the bonding of a 100 μm thick polycarbonate sheet. Disc tilt and cover layer birefringence comply with the physical requirements of the system.

Original languageEnglish
Pages (from-to)326-328
Number of pages3
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1 Dec 1999
Externally publishedYes
Event1999 Joint International Symposium on Optical Memory and Optical Optical Data Storage (ISOM/ODS'99) - Koloa, HI, USA
Duration: 12 Jul 199915 Jul 1999


Dive into the research topics of 'Cover layer technology for the high-NA digital video recording system'. Together they form a unique fingerprint.

Cite this