A multiple mirror reflective surface for use in a multiple mirror telescope in which the objective surface of telescope is tiled with substantially identical planar mirrors having irregular boundaries and a mirror for use therein. The mirrors are groupable into groups of seven, one of which is bounded...http://www.google.fr/patents/US4904073?utm_source=gb-gplus-shareBrevet US4904073 - Fractal tiling for multiple mirror optical devices
Fractal tiling for multiple mirror optical devices
