3D Systems, Inc.

Robert T Pitlak

Mark Anthony Lewis

Wayne A Vinson

Frank F Little

Yehoram Uziel

Wolfgang Schwarzinger

Stuart T Spence

Borzo Modrek

Harry L Tarnoff

Thomas J Vorgitch

Richard A Harlow

Thomas P Chen

Paul H Marygold

Grady O Floyd

Raymond A Bradford

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.

Rapid and accurate production of stereolithographic parts

Rapid and accurate production of stereolighographic parts

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Westlake Village, CA, United States of America

Robert T Pitlak