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Proceedings Paper

Optical Head Using Astigmatic Micro PBS For 3.5 Inch Magneto-Optical Disk Drives
Author(s): Yasuo Otsuka; Tohru Sasaki; Nobuhiro Konuma; Michio Miura; Yukio Fukui
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Paper Abstract

It is required that a drive for a 3.5 inch (90 mm) magneto-optical (MO) disk should be the same size as that of a floppy disk so that it can be installed into the host computer's drive slot instead of the floppy disk drive. We realized a compact-size optical head for the 3.5 inch disk drives by developing an astigmatic micro PBS (polarized beam splitter) as an analyzer. The astigmatic micro PBS (ASPBS) has both a polarizing function for the MO detection and an astigmatic function for the focus detection. And our optical head is based on the discrete block servo format (DBF).

Paper Details

Date Published: 22 December 1989
PDF: 8 pages
Proc. SPIE 1168, Current Developments in Optical Engineering and Commercial Optics, (22 December 1989); doi: 10.1117/12.962992
Show Author Affiliations
Yasuo Otsuka, Hitachi Ltd. (Japan)
Tohru Sasaki, Hitachi Ltd. (Japan)
Nobuhiro Konuma, Hitachi Ltd. (Japan)
Michio Miura, Hitachi Ltd. (Japan)
Yukio Fukui, Hitachi Ltd. (Japan)


Published in SPIE Proceedings Vol. 1168:
Current Developments in Optical Engineering and Commercial Optics
Robert E. Fischer; Harvey M. Pollicove; Warren J. Smith, Editor(s)

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