Optical Head Using Astigmatic Micro PBS For 3.5 Inch Magneto-Optical Disk Drives

Yasuo Otsuka; Tohru Sasaki; Nobuhiro Konuma; Michio Miura; Yukio Fukui

doi:10.1117/12.962992

22 December 1989 Optical Head Using Astigmatic Micro PBS For 3.5 Inch Magneto-Optical Disk Drives

Yasuo Otsuka, Tohru Sasaki, Nobuhiro Konuma, Michio Miura, Yukio Fukui

Proceedings Volume 1168, Current Developments in Optical Engineering and Commercial Optics; (1989) https://doi.org/10.1117/12.962992
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

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).

Citation Download Citation

Yasuo Otsuka, Tohru Sasaki, Nobuhiro Konuma, Michio Miura, and Yukio Fukui "Optical Head Using Astigmatic Micro PBS For 3.5 Inch Magneto-Optical Disk Drives", Proc. SPIE 1168, Current Developments in Optical Engineering and Commercial Optics, (22 December 1989); https://doi.org/10.1117/12.962992

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