Method and apparatus for monitoring arc welding

Details Method and apparatus for monitoring arc welding Method and apparatus for monitoring arc welding

B - Operations, Transporting

23

K

327/115, 350/32

B23K 9/32 (2006.01) B23K 9/095 (2006.01) H04N 7/18 (2006.01)

Patent

CA 1121469

48,156 ABSTRACT OF THE DISCLOSURE A method and apparatus for lowering the contrast range between a welding are and its surroundings for remote viewing of an arc welding process. A monochromatic light source (10) is used to illuminate the area surround- ing the welding arc (18) and a narrow band interference filter (22) tuned to the wavelength of the monochromatic light (10), is placed in front of a viewing camera (24). The monochromatic light chances the are background while the filter (22) attenuates the are illumination that reaches the camera for a more desirable contrast ratio so that the arc, weld puddle and surrounding area can be visible with a high degree of definition on the monitor.

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