LASER SCANNING AND POWER CONTROL IN RAPID PROTOTYPING SYSTEM

PROBLEM TO BE SOLVED: To keep exposure constant along a vector in a method for vector-scanning a laser beam. SOLUTION: A laser beam from a laser light source is oriented to a scanner which is provided with a first mirror 146 connected to a first rotary motive device 148 for positioning the first mir...

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Bibliographic Details
Main Authors PARTANEN JOUNI P, KEREKES THOMAS A
Format Patent
LanguageEnglish
Published 30.11.2006
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:PROBLEM TO BE SOLVED: To keep exposure constant along a vector in a method for vector-scanning a laser beam. SOLUTION: A laser beam from a laser light source is oriented to a scanner which is provided with a first mirror 146 connected to a first rotary motive device 148 for positioning the first mirror and a second mirror 147 connected to a second rotary motive device 149 for positioning the second mirror 147. The laser beam is oriented from the first mirror to the second mirror, and then to a working face. By providing commanded-position signals to each of the first and the second rotary motive devices to rotate respective mirrors, the laser beam is scanned along the vector, each mirror undergoing acceleration at the beginning and the end of the vector, wherein the commanded-position signals are calculated based on physical mathematical modeling of the acceleration of the mirrors taking into account effects of inertia of the scanning system. COPYRIGHT: (C)2007,JPO&INPIT
Bibliography:Application Number: JP20060078305