Patent ID: 7580189

Claim:
A scanned beam display, comprising: a beam generator to generate a beam modulated according to an image to be displayed; a scanner capable of receiving the beam and scanning the beam to generate a raster scan of the image to be displayed; and an exit pupil expander receiving the raster scan of the image, the exit pupil expander comprising: a first microlens array comprising two or more lenslets arranged to have a focal length, wherein one of the two or more lenslets of the first microlens array has a width approximately equal to a pitch of the two or more lenslets of the first microlens array; and a reflector disposed at a distance of approximately one-half of the focal length from the microlens array; wherein the raster scan of the image applied to the first microlens array reflects off the reflector as an image of the first microlens array operating as a second microlens array and exits the first microlens array in an expanded exit pupil within which substantially an entirety of the image may be visible to a viewer.