The working principle of the rotating mirror camera is based
on the Miller principle for high-speed cinematography. The system employs a
rotating three-faced mirror prism directing the incoming light to 128 optical
channels arranged in a quarter arc. The image on the primary image plane of BRANDARIS
128 is relayed to the secondary image plane at the mirror surface by a
set of relay lenses. Then the image is projected on the final image plane
through a set of lenses contained in the lens bank. The image is recorded on 128
un-intensified high sensitivity CCD chips mounted on the image arc.