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Proceedings Paper

Optical Memories
Author(s): R. D. Lohman
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Paper Abstract

Optical storage of information offers the potential advantages of high packing density, fast access and low cost. Present research and development on optical memories is divided into two main approaches: those employing bit by bit direct imaging and those employing page organized holograph coding. Each of these categories can be further subdivided on the basis of whether the storage medium is reversible or irreversible. In this paper we will review all four types with emphasis given to the present state of the art and possible future developments. A further class of optical systems which involve the storage of information in non-digital form, i.e. as either direct or holographic images of pictures or documents, is beyond the scope of the present discussion.

Paper Details

Date Published: 1 June 1973
PDF: 4 pages
Proc. SPIE 0038, Electro-Optics Principles and Applications, (1 June 1973); doi: 10.1117/12.953753
Show Author Affiliations
R. D. Lohman, RCA Laboratories (United States)


Published in SPIE Proceedings Vol. 0038:
Electro-Optics Principles and Applications
John B. DeVelis; Brian J. Thompson, Editor(s)

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