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TWO-AXIS ENCODING OF INDEPENDENTLY ADDRESABLE IMAGES IN HOLGRAPHIC DISPLAYS

IP.com Disclosure Number: IPCOM000025931D
Original Publication Date: 1989-Feb-28
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

Holographic displays are known in which a plurality of separate images are formed in the same holographic medium. The medium is then illuminated by an array of light sources one for each image stored in the display. A viewer looks into the hologram and sees a virtual-image reconstructed. The reconstructing light sources are white light sources such as light bulbs which can be independently controlled for illumination of the holographic display which will selectively reconstruct a specific portion of the composite image. The different colors are formed by filters which transmit the appropriate wavelength. The table below gives an example of how the individually addressable images might be used to dis lay four areas of an office copier.