Abstract

A hologram writer for a read-only page-oriented hologram memory has been developed. Data masks are produced by photographing dot patterns of a plasma display panel on a long-size film. A data pattern is obtained by covering a fixed bit mask with each data mask and stored in a small hologram. A hologram memory plate with total capacity of 2 × 107 bits was prepared by this hologram writer. This paper describes the construction and features of this hologram writer, as well as the characteristics of the hologram memory plate produced on a trial basis.

© 1974 Optical Society of America

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