T-Scan

T-Scan is a high-speed hand scanner that digitizes shiny and diffuse surfaces in one go under normal light conditions. With a measurement volume of 30m (98ft), it scans large objects more accurately and 50 percent faster than comparable products. Set-up times are minimal, and there is no need for photogrammetric targets.

By projecting a laser beam point by point, the Leica T-Scan high-speed hand scanner uses flying dot scanning to digitizes all types of surfaces.

Leica T-Scan features include:

Window for laser beam, including navigation laser for staying in measurement field
Class 2 eye-safe laser
Min/Max. working distance: 41-119mm (1.6-4.7in)
Automatic intensity adjustment for adapting to shiny and dark surfaces
Insensitive to environmental light
Trigger button for data acquisition
Measurement depth: 78mm (3.1in)
Scanning width within working distance: 90mm ±25mm (3.5in ±1in)

The uncertainty specified below is achieved with Leica T-Scan using a point density setting of at least 0.35mm and a line spacing of at least 0.35mm under stable environmental conditions.

Measurement uncertainty of spatial length “U_L” is the deviation between a measured length and its nominal value. This measurement uncertainty is specified as a function of the shortest distance between the Laser Tracker and the measured length. The length can be up to 6m and is perpendicular positioned to the laser beam. The centers of two fix-mounted spheres (sphere radius between 15mm and 20mm) at the end of the reference length are representing the nominal distance. The measured distance between the sphere centers is calculated using scan data of all four Leica T-Scan sides.

Measurement uncertainty of sphere radius “U_R” is the deviation between a measured sphere radius and its nominal value.

The measurement uncertainty of the sphere surface “U_S” is defined as the 2-sigma value of all deviation from the best-fit sphere that is calculated with all measured points. This specification assumes a reference sphere with a radius between 10mm and 50mm. These measurement uncertainties are specified as a function of the distance between the Laser Tracker and the sphere. Data of all four Leica T-Scan sides is utilized for the calculation of the sphere radius and the sphere surface.

Measurement uncertainty of plane surface “U_P” is defined as the 2-sigma value of all deviation from the best-fit plane that is calculated with all measured points. Data from all four Leica T-Scan sides is utilized for the calculation of the plane surface.

Measurement uncertainty of spatial length

U_L = ± 60μm for <8.5m (± 0.00236in for <27.9ft)
U_L = ± 7μm/m for >8.5m (± 0.00008in/ft for >27.9ft)

Measurement uncertainty of sphere radius (2 Sigma)

U_R = ± 50μm for <8.5m (± 0.00236in for <27.9ft)
U_R = ± 7μm/m for >8.5m (± 0.00008in/ft for >27.9ft)
U_S = ± 95μm + 1.5μm/m (±0.003740in + 0.00002in/ft)

Measurement uncertainty of plane surface (2 Sigma)

U_P = ± 95μm + 3μm/m (±0.003740in + 0.00004in/ft)