IMAX dome cinemas, with their huge wrap-around screens, struggle to make images bright and clear because the picture is projected from a relatively small 70-millimetre film. The answer, says Edward Lantz in Chadds Ford, Pennsylvania, is to take advantage of the way the human eye sees more clearly at the centre of vision than at the periphery (WO 2004/10681).
The projector is put in the front row, instead of behind the audience, and uses a very wide-angle lens. The projector shines more light towards the centre of the screen than at the sides, top and bottom. The audience will…
