A light effect system includes a light source and at least one aperture element interposed between the light source and an exit lens of the system. The aperture element has at least one aperture and at least one light effect element positioned therein. The system uses an aperture element having at least...http://www.google.se/patents/US20100208464?utm_source=gb-gplus-sharePatent US20100208464 - INTERCHANGEABLE LIGHT EFFECTS
