Patent 7693412 was granted and assigned to VISIDYNE, INC. on April, 2010 by the United States Patent and Trademark Office.
An aureolegraph includes a reflective screen with an aperture therein, a lens for focusing an image onto the screen, an imager for imaging the image on the screen, and a light trap for preventing light passing through the aperture in the screen from passing back out through the aperture.