Patent ID: 9224320
Filing Date: 2015-12-29
Classification: G02F,G09G,H04N

Abstract:
1. A projection display system comprising: a projector comprising a projection lens arranged to focus an image from the projector onto a viewing screen, the viewing screen forming the projected image that is viewed by users; a spatial modulator, the spatial modulator comprising controllable elements, disposed between the projection lens and the viewing screen, wherein the spatial modulator is substantially disposed in a plane that is not at the focus of the lens and located at a position such that the effect of the controllable elements of the spatial modulator is substantially blurred at the viewing screen; a controller connected to control transmissivity of a plurality of regions of the spatial modulator based directly or indirectly on image data; and wherein further the controller is capable of sending control signals to the spatial modulator to compensate for flare produced by the projection lens.