Abstract: A display comprises a display device having an image output surface at which an image is displayed as a spaced array of pixel elements, a light transmitting element in the form of an image guide having a viewing surface, the light transmitting element arranged to receive light from the display device and display the received light on the viewing surface, the light transmitting element having a polarising layer arranged in an optical path between the display device and the viewing surface, wherein the polarising layer is arranged to attenuate unpolarised ambient light received from outside the display while substantially transmitting polarised light received from the display device.