REFLECTIVE OPTICAL CONFIGURATIONS WITH PRESCRIBED OPTICAL FIELD MAPPINGS FOR BACK-SCANNED IMAGERS

摘要

Optimal angular field mappings that provide the highest contrast images for back- scanned imaging are given. The mapping can be implemented for back-scanned imaging with afocal optics including an anamorphic field correcting assembly configured to implement a non- rotationally symmetric field mapping between object space and image space to adjust distortion characteristics of the afocal optics to control image wander on a focal plane array. The anamorphic field correcting assembly can include one or more mirrors having non-rotationally symmetric aspherical departures.