Enhanced Resolution for Images on Microdisplays

摘要

An enhanced resolution microdisplay system using lenses mounted at a distance from the microdisplay, taking advantage of the Talbot effect, which can be produced using arrays of lenses and mirrors. The Talbot effect image of at least one light source created using a fly's eye lens is imaged onto the microdisplay using a beam splitter, and the combined image is passed by the beam splitter through output optics.

主权项

1. An enhanced resolution microdisplay system comprising:
a) a beam splitter having a first side, a second side opposite the first side, a third side, a fourth side opposite the third side, and a partially reflecting mirror oriented to reflect a portion of light entering through the first side to the third side and a portion of light entering through the fourth side to the second side; b) a microlens array adjacent to the first side of the beam splitter; c) output optics adjacent to the second side of the beam splitter; d) at least one dichroic mirror having a thickness and a position adjacent to the third side of the beam splitter, the at least one dichroic mirror being selected to reflect light of a color while passing other colors; e) a microdisplay adjacent to the fourth side of the beam splitter; f) a beam combiner adjacent to the microlens array, the beam combiner having at least two inputs and an output oriented such that light entering the at least two inputs is combined in the output and passes to the fly's eye lens; and g) at least one light source emitting light of a color into one of the at least two inputs of the beam combiner, the color of the at least one light source being selected to be same color reflected by the at least one dichroic mirror; the thicknesses and positions of the at least one mirror being selected such that a travel distance for light from the at least one light source emitting light in a color which is reflected by the at least one mirror causes a Talbot plane image of the light source to be focused on the microdisplay.