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Technical Documentation and
User Instructions
Laser Mirror Scanner LMS-Q280i
1.1.2 Scanner Mechanism
The scanner mechanism deflects the laser beam for range measurement into a
precisely defined direction. Each scan line is composed of a number of pixels
(single laser measurements).
The angular deflection of the laser beam is realized by a rotating polygon mirror
wheel. The polygon-mirror is composed of flat reflective surfaces arranged
around the wheel perimeter. The wheel rotates continuously at a fixed speed to
provide repetitive unidirectional scans.
Scanned la
ser beam
Rotating
polygonal
mirror
Tra
ns
mi
tte
r
Re
cei
ver
Fig. 2
Principle of beam deflection by a rotating mirror