Touch sensitive holographic displays
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United States of America Patent
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Jan 31, 2017
Grant Date -
Nov 7, 2013
app pub date -
Jul 3, 2013
filing date -
Dec 24, 2008
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Abstract
We describe a touch sensitive holographic image display device for holographically projecting a touch sensitive image at an acute angle onto a surface on which the device is placed. The device includes holographic image projection optics comprising at least one coherent light source illuminating a spatial light modulator (SLM), output optics to project a hologram onto an acute angle surface, and a remote touch sensing system to remotely detect a touch of a location within or adjacent to the holographically displayed image. A control system is configured to provide data defining an image for display, to receive detected touch data, and to control the device responsive to remote detection of a touch of a the displayed image.
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