Patent ID: 7545562

Claim:
A common-aperture optical system, comprising: a reflective telescope having a common boresight, an entrance pupil, an exit pupil, and a beam path extending from the entrance pupil to and beyond the exit pupil, wherein the reflective telescope includes at least two mirrors; a beam splitter intersecting the beam path so that the beam path is incident upon the beam splitter, wherein the beam splitter is positioned along the beam path between two mirrors of the reflective telescope; a light sensor positioned to receive an input light beam traveling along the beam path after the beam path intersects the beam splitter and passes the exit pupil of the reflective telescope; a light source producing an output light beam that is incident upon the beam splitter and positioned to inject the output light beam into an inverse of the beam path and toward the entrance pupil of the reflective telescope; and a diverger to correct at least one of the input light beam and the output light beam.