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Browse Prior Art Database

Optical Encrypting System

IP.com Disclosure Number: IPCOM000046837D
Original Publication Date: 1983-Aug-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Callens, P: AUTHOR

Abstract

This is a process for encrypting a typed text through double reflections on two sets of mirrors. Assume the mirrors of each set are all placed in planes parallel to each other, with each mirror being a small mirror provided with a lens system focusing on one printed character space when the original printed document is placed in a predetermined location with respect to the encrypting device. Then, through a first reflection, the original document will provide a first encrypted image. This first encrypted image may then be further encrypted through additional sets of mirrors similar to the first set and placed at an angle with respect to the first set of mirrors. In practice, a single second mirror for each character, again provided with focusing means, should provide sufficient encrypting to perform the function looked for.

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Optical Encrypting System

This is a process for encrypting a typed text through double reflections on two sets of mirrors. Assume the mirrors of each set are all placed in planes parallel to each other, with each mirror being a small mirror provided with a lens system focusing on one printed character space when the original printed document is placed in a predetermined location with respect to the encrypting device. Then, through a first reflection, the original document will provide a first encrypted image. This first encrypted image may then be further encrypted through additional sets of mirrors similar to the first set and placed at an angle with respect to the first set of mirrors. In practice, a single second mirror for each character, again provided with focusing means, should provide sufficient encrypting to perform the function looked for. The figure shows a device for encrypting one character. The typed text is placed against the ABCD surface of a prismatic device, with the character to be encrypted (i.e., to be space translated with respect to other characters not shown) being at position O. A first reflection occurs on a mirror A C E F, followed by a second reflection on a second mirror D F G H. To the observer, the object O seems to be located in i2.

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