Lyon & Lyon
Rapid and accurate production of stereolighographic parts
 A stereolithography system employing a more powerful laser and faster dynamic mirrors to speed up part building without sacrificing accuracy is described, especially large or complex parts. A controllable shutter is placed in the beam path of the laser to selectably block the passage of the beam and prevent unwanted solidification. A suitable servo controlled feedback loop is provided to accurately position the mirrors at the higher velocity. Also described is a means to reduce data flow by distributing tasks in a multiple processor environment, and to improve user interaction by the use of a spreadsheet model. These also improve the speed of part building, especially for large or complex parts. 
3D Systems, Inc.
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Thomas P. Yehoram Paul H. Frank F. Harry L. Thomas J. Borzo Robert T. Raymond A. Wayne A. Mark A. Wolfgang Richard A. Grady O.
Chen Uziel Marygold Little Tarnoff Vorgitch Modrek Pitlak Bradford Vinson Lewis Schwarzinger Harlow Floyd