Real-time laser beam diameter determination in a laser-materials

Details Real-time laser beam diameter determination in a laser-materials Real-time laser beam diameter determination in a laser-materials

1987-08-31

1988-08-16

Albritton, C. L.

Electric heating

Metal heating

By arc

21912164, 21912165, B23K 2602

Patent

active

047646551

ABSTRACT:
A laser-materials processing system including means for determining an incident diameter of a laser beam at a point of laser beam-material interaction on a workpiece, is disclosed. A filtered image of the interaction point is transmitted, via an imaging fiber bundle, to a video camera. The analog video signal generated thereby is digitized and provided to a computer which evaluates the pixel magnitudes along a beam image diameter line to determine therefrom the incident laser beam diameter.

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"Coaxial Arc Weld Pool Viewing for Process Monitoring and Control" by Richardson et al., Welding Jnl, Mar. 1984, pp. 43-50.
"Laser Beam Profiling the Automated Way" by Rypma, Photonics Spectra, Aug. 1987, pp. 67-74.

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