A housing structure has a frame structure 1 on which there are arranged via connecting elements 7 several optical elements 5 which are held in mounts 6 or structural modules 6′. The optical elements 5 are detachably connected to the frame structure 1 with their mounts 6 or structural modules 6′ and...http://www.google.fr/patents/US8018664?utm_source=gb-gplus-shareBrevet US8018664 - Housing structure
