University of Rochester

Astrid M Mueller

Jeffery W Lefler

The invention provides apparatuses and systems for cutting off electromagnetic radiation (ER) beams, such as laser beams. The apparatuses and systems employ gravitational force on a shutter to close off the path of the ER beam if power is cut to an electromagnet holding the shutter out of the beam path. Power to the electromagnet is typically connected to a safety interlock connected to a door or other entry point to an enclosure in which the ER beam is being used. Additionally, the invention provides add-on devices that allow the ER beam to be blocked to change lenses or targets.

Growing community of inventors

Ontario, NY, United States of America

Astrid M Mueller