Real-time observation device applied to electric arc welding

The utility model discloses a real-time observation device applied to electric arc welding. The real-time observation device mainly comprises an industrial camera, an industrial lens, a narrow-band filter, a plurality of groups of lasers, an optical fiber and a laser controller. Information such as the molten pool state, the molten drop form and the electric arc form can be observed in the electric arc welding process. The laser controller enables the multiple groups of lasers to circularly illuminate in sequence, so that the problem of heating caused by high-power long-time work of a single laser is solved, and the industrial technical problem is solved; the shot molten pool part is illuminated by utilizing single-band laser, and the influence of light and shade changes on the imaging brightness of the industrial camera during arc starting and arc extinguishing is weakened by emitting light with the same intensity as arc light; and interference of light of other wavebands on the shooting effect of the indust