| 主权项 |
1. An optical imaging system configured for back-scanned imagery comprising:
an imager including a focal plane array; an afocal telescope optically coupled to the imager, and configured to receive and collimate electromagnetic radiation and to direct the electromagnetic radiation via an exit pupil of the afocal telescope to the focal plane array of the imager, the focal plane array configured to form an image from the electromagnetic radiation, and the afocal telescope having an optical axis that passes through the exit pupil to the imager; a back-scan mirror optically coupled to the afocal telescope and the imager, positioned proximate the exit pupil of the afocal telescope, and configured to backscan the electromagnetic radiation to stabilize the image on the focal plane array; and an optical element positioned proximate an intermediate image plane of the afocal telescope and configured to adjust distortion characteristics of the afocal telescope to control image wander on the focal plane array for off-axis image points during the backscan. |
