| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that there is a risk that welding sputter is attached to a lens of an imaging device and welding fume clouds the lens of the imaging device when imaging the state of welding with the imaging device and performing profile compensation of a teaching position based on an imaged image and, further, there is a risk that defective welding occurs due to influence of shield gas in the conventional technique in which shield gas used when performing welding is utilized in order to prevent attachment of the welding sputter or welding fume to the lens.SOLUTION: An optical device includes: a cover member having an opening part; and one or a plurality of optical members which are covered with the cover member, contain one area corresponding to the opening part and are configured such that one area can be changed. By means of the optical device configured in such a manner, an imaging device can be protected while reducing a risk of causing defective welding.SELECTED DRAWING: Figure 4 |
