Patent ID: 7062134
Filing Date: 2006-06-13
Classification: G06F,H04N

Abstract:
1. A display system, comprising: an optical panel including a plurality of optical waveguides stacked together, with first ends thereof defining an inlet face, and opposite ends thereof defining an outlet face; a projector for projecting an image beam outbound across said inlet face for display on said outlet face; an imaging device for imaging said image beam is optically aligned between said projector and said inlet face; and at least one optical detector bridging only some of said waveguides for detecting a location of an inbound light spot on said outlet face; a controller operatively coupled to said imaging device and said at least one detector, wherein said controller is configured for controlling said imaging device to display a visible indicator on said outlet face at a location corresponding to said detected spot location; wherein said at least one detector bridges said only some of said waveguides to define a virtual target only on a portion of said outlet face, and wherein said detected spot location is located solely within said target.