Apparatus and method for generating a plurality of exit pupil image to expand the exit pupil

摘要

And a diffraction grating to produce an exit pupil image, and one of the exit pupil image, but having the strength of the first exit pupil remaining images or has a luminous intensity of the second lower than the first intensity each display system , or from the approximately. The present system also includes a filter which attenuates the intensity of the exit pupil image of said one. In one embodiment, the exit pupil image so that all have the same intensity or nearly identical, the filter attenuates the zero-order exit pupil image.