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Proceedings Paper

Sol-gel technology for optical disk application
Author(s): Yoshinobu Mitsuhashi; Atsunori Matsuda; Yoshihiro Matsuno
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Paper Abstract

Fine patterning, pregrooved layer coatings, on glass disks by the sol-gel method has been successfully achieved. The pregrooving process, formation of a sol-gel film on a glass substrate, stamping the groove pattern on the gel film and heat treatment, is described. The specifications of the pregrooved glass disk of 130 mm in diameter are satisfactory for the requirements as an optical disk substrate in terms of dimensional and physical characteristics, mechanical characteristics, signals from grooves. It is noted that the sol-gel pregrooved optical disks substrates have such excellent features as small dynamic radial runout, very small tilt and much long life comparing with those of conventional plastic disk substrates. Cost- performance characteristics are discussed for suitable applications of the sol-gel pregrooved optical memory disks.

Paper Details

Date Published: 7 December 1992
PDF: 8 pages
Proc. SPIE 1758, Sol-Gel Optics II, (7 December 1992); doi: 10.1117/12.132005
Show Author Affiliations
Yoshinobu Mitsuhashi, Nippon Sheet Glass Co., Ltd. (Japan)
Atsunori Matsuda, Nippon Sheet Glass Co., Ltd. (Japan)
Yoshihiro Matsuno, Nippon Sheet Glass Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 1758:
Sol-Gel Optics II
John D. Mackenzie, Editor(s)

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