FARO
®
Laser Scanner Focus
3D
X 130 Manual
January 2014
3
Chapter 1: Introduction
To measure the distance, Focus
3D
X 130 uses phase shift technology, where
constant waves of infrared light of varying length are projected outward from the
scanner. Upon contact with an object, they are reflected back to the scanner. The
distance from the scanner to the object is accurately determined by measuring the
phase shifts in the waves of the infrared light. HYPERMODULATION
TM
greatly
enhances the signal-to-noise ratio of the modulated signal with the help of a
special modulation technology. The x, y, z coordinates of each point are then
calculated by using angle encoders to measure the mirror rotation and the
horizontal rotation of the Focus
3D
X 130. These angles are encoded
simultaneously with the distance measurement. Distance, vertical angle and
horizontal angle make up a polar coordinate (δ, α, β), which is then transformed
to a Cartesian coordinate (x, y, z). The scanner covers a 360° x 300° field of view.
Figure 1-2 Laser Deflection
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