Patent ID: 9557855
Date: 2017-01-31
CPC Classifications: G03H,G06F,G06Q,Y02D

Claim:
1. A touch sensitive image display device for projecting a touch sensitive displayed image at an acute angle onto a surface, the device comprising: image projection optics comprising at least one light source; a remote touch sensing system to remotely detect a touch of a location within or adjacent to said displayed image and having a touch data output to provide detected touch data; and a display system to drive said image projection optics; wherein the device further comprises: wherein said remote touch sensing system is an optical remote touch sensing system comprising infrared illumination optics located proximate said surface on which said image is displayed to provide illumination of a region above said surface on which said image is displayed; wherein said projection optics are front-projection optics configured to project onto the same side of said surface as said illuminated region; and wherein said touch imaging sensor is configured to detect light from touching said displayed image through said illuminated region.