Abstract

A multisurface disk system is a very efficient way to increase storage capacity. The disk pack technique is also useful for easy exchanges of storage media. Application of these techniques to optical disk systems is thought to be very promising for the future of electronic document storage. It is imperative that a multisurface optical system have a thin optical head, since the head must be accommodated between two adjacent optical disks. It is also necessary that the focusing and tracking servomechanisms be accommodated in the thin optical heads, since it makes the access to each disk easier. A reduction in the weight of an optical head is also required for quick random access.

© 1981 Optical Society of America