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Proceedings Paper

Three-Dimensional Actuator For Optical Head
Author(s): Hideo Ohnuki; Yukio Fukui; Nobutaka Ohnuki; Masayuki Inoue
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Paper Abstract

This paper describes the design and characteristics of a three dimensional actuator for an optical readout head. In order to obtain enough servo gain, it is necessary to reduce the size and weight of the moving parts. Instead of the conventional galvano mirror, this actuator drives the objective lens, which is suspended in the collimated laser beam, towards three directions, vertical, radial and tangential, without tilting. The major advantages of this unique three dimensional actuator lie in reducing a cost of the objective lens and the number of the adjusting points.

Paper Details

Date Published: 27 May 1982
PDF: 7 pages
Proc. SPIE 0329, Optical Disk Technology, (27 May 1982); doi: 10.1117/12.933382
Show Author Affiliations
Hideo Ohnuki, Hitachi, Ltd. (Japan)
Yukio Fukui, Hitachi, Ltd. (Japan)
Nobutaka Ohnuki, Hitachi, Ltd. (Japan)
Masayuki Inoue, Hitachi, Ltd. (Japan)


Published in SPIE Proceedings Vol. 0329:
Optical Disk Technology
Robert A. Sprague, Editor(s)

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