Projection adapter and combination of such adapter with a display

摘要

A projection adapter is provided for attaching to a display so as to form a projected enlarged image of an image displayed by the display. The display is of the direct view reflective or transflective type and does not require any modification when cooperating with the projection adapter to function as a projection display. The adapter comprises an illumination section and a projection section with optional beam steering optics supported by a common support arrangement. A front optical element is arranged to overlay the display with the projection adapter in use. The illumination section forms an off-axis image of a light source and the front optical element images light reflected by the reflective or transflective display to an image which is laterally displaced from the light source image. The projection section projects a magnified image of the image displayed by the display onto a screen which may form part of or be distinct from the adapter.