Laser scanner

A laser scanner for optical measurement of an environment, comprising

• an optical distance measuring device for detecting distance measurement data, having
• a transmitter unit for emitting a distance measurement radiation and
• a receiver unit for receiving returning parts of the distance measurement radiation,
• a base,
• a support, which is fixed on the base such that it can rotate about a support axis of rotation, in particular a slow axis of rotation,
• a beam steering unit for the distance measurement radiation, which is fixed to the support such that it can rotate about a beam axis of rotation substantially orthogonal to the axis of rotation of the support, in particular a fast axis of rotation,
• a first angle encoder for recording first angle data with respect to a rotation of the support about the support axis of rotation, and
• a second angle encoder for recording second angle data with respect to a rotation of the beam steering unit about the beam axis of rotation,
• wherein the distance measurement data and the first and second angle data, hereafter designated as measurement data, are detected during a measurement process which comprises
• a scanning sampling by means of the distance measuring device with
• a defined continuous rotation of the support about the support axis of rotation,
• a defined continuous rotation of the beam steering unit about the beam axis of rotation, and
• a continuous emission of the distance measurement radiation and a continuous reception of returning parts of the distance measurement radiation, wherein
• the base comprises a only one overall effective stabilization region axially along the support axis of rotation, which is used to stabilize the support against a tilting of the support relative to the base,
• the stabilization region has a first extension axially along the support axis of rotation and a second extension perpendicular to the support axis of rotation and substantially radially symmetric with respect to the support axis of rotation, and
• the second extension is larger than the first extension.