OCT SCAN 2.5 is an advanced welding optics and sensor solution for remote laser welding with integrated optical coherence tomography (OCT) for real-time quality control. This 2.5D scanner combines process optics and OCT analytics to enable precise seam tracking, in-process penetration depth measurement, and detailed weld topography analysis. It supports fast online position correction and stable seam guidance, even during complex movements. Optional sensor extensions further enhance quality assurance.