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Proceedings Paper

Development of tilt servo system using 4-axis lens actuator for disk tilt compensation
Author(s): Y. Motegi; M. Nagasato; Yoriyuki Ishibashi; Hiroshi Someya; Nobutaka Kikuiri
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Paper Abstract

High-Definition DVD 15 GB/side recording capacity is realized by using violet laser diodes, and it is expected to be the next generation optical disc. However, the shortening in the wavelength of laser diode and increase in recording density lead to a tighter margin for allowable disc tilt due to the wavefront aberration. Therefore, a tilt servo system using a 4-axis lens actuator has been developed. It controls the object lens not only in tracking and focusing directions but also in two axes tilt directions corresponding to disc tilt. This paper describes features of the tilt servo system and the experimental results of its tilt compensation effect.

Paper Details

Date Published: 28 June 1999
PDF: 3 pages
Proc. SPIE 3864, Joint International Symposium on Optical Memory and Optical Data Storage 1999, 386407 (28 June 1999); doi: 10.1117/12.997618
Show Author Affiliations
Y. Motegi, Toshiba Corp. (Japan)
M. Nagasato, Toshiba Corp. (Japan)
Yoriyuki Ishibashi, Toshiba Corp. (Japan)
Hiroshi Someya, Toshiba Corp. (Japan)
Nobutaka Kikuiri, Toshiba Corp. (Japan)

Published in SPIE Proceedings Vol. 3864:
Joint International Symposium on Optical Memory and Optical Data Storage 1999
Shigeo R. Kubota; Ryuichi Katayama; Douglas G. Stinson, Editor(s)

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