Flatness Characteristics Of Media For Optical Recording

L. P . J. Hoogeveen; A. M. J. Spruijt

doi:10.1117/12.936061

10 November 1983 Flatness Characteristics Of Media For Optical Recording

L. P . J. Hoogeveen, A. M. J. Spruijt

Proceedings Volume 0420, Optical Storage Media; (1983) https://doi.org/10.1117/12.936061
Event: 1983 Optical Mass Data Storage Conferences, 1983, Arlington, United States

Abstract

In optical recording it is essential that the laser beam stays in focus on the sensitive layer of the optical disk. The focussing performance depends on the variations in the optical path during recording and on the ability of the objective lense assembly to correct for these deviations. The vertical displacement of optical media rotating at 8 Hz is corrected by servo-mechanics and servo electronics of the focusing objective lense assembly. Typical values for the vertical displacement due to media unflatness for the Philips - C.D.C. optical recording system, are:

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L. P . J. Hoogeveen and A. M. J. Spruijt "Flatness Characteristics Of Media For Optical Recording", Proc. SPIE 0420, Optical Storage Media, (10 November 1983); https://doi.org/10.1117/12.936061

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