The iScan3D is a handheld metrology-grade 3D laser scanner from API (Automated Precision Europe) designed for large-volume inspection workflows. It uses blue crossed laser lines projected onto the target surface and a 360° rotating head that allows the operator to scan in any direction without reorienting the scanner body. The iScan3D does not operate standalone — it pairs with API's Radian 6DoF laser tracker, which tracks the scanner's position and orientation in real time over distances from 2 to 50 metres, converting each scanned line into globally referenced 3D coordinates without the need for target stickers, photogrammetry markers, or structured-light reference frames.

Why integrate tactile probing into a laser scanner?

Laser scanning excels at capturing freeform surfaces and dense point clouds, but it struggles with features that are partially occluded or require physical contact — deep bores, narrow slots, datum edges, and reference spheres. The iScan3D addresses this with an integrated tactile probing capability. The operator can switch from optical scanning to touch probing within the same measurement session without changing tools or recalibrating. The system uses RFID to automatically recognize styli up to 500 mm in length, applying the correct tip offset and probe compensation. Accuracy with the vertical probe is ±75 μm at 2–7 m, and ±100 μm at 7–15 m. This dual-mode operation means a single instrument handles both dense surface digitization and geometric dimensioning and tolerancing (GD&T) reference measurements.

How does the blue crossed-line laser improve scanning?

Blue laser light (shorter wavelength than the more common red) produces less speckle noise on metallic and reflective surfaces, improving signal-to-noise ratio on machined parts, castings, and polished tooling. The crossed-line pattern — two perpendicular laser stripes — allows the scanner to capture 3D data regardless of scanning direction. A conventional single-line scanner requires the stripe to be perpendicular to the scan motion; the crossed-line geometry means both push and pull strokes contribute usable data. With a stand-off distance of 170 mm ± 40 mm and a field of view of 110 × 100 mm, the operator can maintain a comfortable working distance while covering significant surface area per pass at 200,000 points per second.