Blue laser and high-numerical-aperture optical disk system for digital video recording (DVR)

Henk van Houten

doi:10.1117/12.416838

7 February 2001 Blue laser and high-numerical-aperture optical disk system for digital video recording (DVR)

Henk van Houten

Proceedings Volume 4085, Fifth International Symposium on Optical Storage (ISOS 2000); (2001) https://doi.org/10.1117/12.416838
Event: Fifth International Symposium on Optical Storage (IS0S 2000), 2000, Shanghai, China

Abstract

Based on a blue diode laser (405 nm wavelength) and a two- element objective lens with a numerical aperture of 0.85, a third generation optical recording system has been developed that is able to record 22.5 GB on a single sided 12 cm diameter disc, at a user data rate of 50 Mb/s. The system is referred to by the technical name DVR for high definition Digital Video Recording. In this paper, we review the physical and the system concept, the phase change media, the optical pick up unit, and the drive implementation.

Citation Download Citation

Henk van Houten "Blue laser and high-numerical-aperture optical disk system for digital video recording (DVR)", Proc. SPIE 4085, Fifth International Symposium on Optical Storage (ISOS 2000), (7 February 2001); https://doi.org/10.1117/12.416838

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