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US 5,705,788 AGranted
Process for treatment of materials with diode radiation
AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsEckhard Beyer, Konrad Wissenbach, Volker Krause
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Abstract
The invention relates to a process for material treatment with diode radiation, especially laser diode radiation. To match the radiation profile to the treatment process, the process is so carried out that radiation emitted from a multiplicity of diodes is directed with a predetermined radiation profile upon the treated region of the workpiece and that a change in the intensity distribution in the radiation profile is effected by controlling the diode output power.
Claims19
A process for material treatment with diode radiation comprising the steps of:
- (a) emitting diode radiation from a plurality of diodes and directing the emitted radiation upon a treatment region of a workpiece;
- (b) varying an intensity distribution of a radiation profile of the radiation directed upon said region by controlling an output power of at least some of said diodes;
- (c) monitoring a temperature distribution of the treatment region produced by radiation from said diodes during irradiation thereof;
- and
- (d) controlling the variation of the intensity distribution in accordance with results of the monitoring.
2 more elements
Dependencies are inferred from the claim text.