Wide field-of-view imaging system using a reflective spatial light modulator
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsDavid V. Wick, Ty Martinez
Life of this patent
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Abstract
PRS0847A foveated imaging system using a relatively simple optical imaging system with a reflective spatial light modulator at or near a pupil plane to correct off-axis aberrations. Maximum resolution is obtained for a single fixation point (foveal region) within the field of view at a time. The fixation point can be changed manually, by a predetermined scan pattern, or automatically varied for surveillance or tracking applications. A pre-calibrated look up table is used to vary the reflective spatial light modulator for each fixation point.
Claims5
A foveated imaging system comprised of:
- an optical imaging system having a field of view, off-axis aberrations, and a pupil plane;
- a reflective spatial light modulator positioned at or near the pupil plane of the optical imaging system to correct the aberrations at a fixation point within the field of view;
- means for varying the fixation point over time;
- and
- means for controlling the reflective spatial light modulator whereby maximum resolution is obtained at any particular fixation point as the fixation point is varied over time.
Dependencies are inferred from the claim text.