Patents Represented by Attorney, Agent or Law Firm Michael Ervin
  • Sintering using thermal image feedback
    Patent number: 6815636
    Abstract: A method and apparatus for forming three dimensional objects by laser sintering that utilizes a broad area thermal vision system such as an infrared camera that can measure multiple temperatures across the target area and use that temperature data as feed back to a control system that both adjusts a zoned radiant heater system and adjusts scan speed and laser power to control temperatures across the target area.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: November 9, 2004
    Assignee: 3D Systems, Inc.
    Inventors: Mark Chung, Andre-Luc Allanic