US 12,265,156 B2
Laser scanner
Simon Mark, Thal (CH); Klaus Bereuter, Alberschwende (AT); Benjamin Müller, St. Gallen (CH); Roman Steffen, Rebstein (CH); Burkhard Böckem, Jonen (CH); Jürgen Dold, Sempach (CH); Jochen Scheja, Hohenems (AT); Lukas Heinzle, Wädenswil (CH); and Charles Leopold Elisabeth Dumoulin, Balgach (CH)
Assigned to LEICA GEOSYSTEMS AG, Heerbrugg (CH)
Filed by LEICA GEOSYSTEMS AG, Heerbrugg (CH)
Filed on May 24, 2023, as Appl. No. 18/201,664.
Application 18/201,664 is a continuation of application No. 16/348,842, granted, now 11,703,597, previously published as PCT/EP2016/077372, filed on Nov. 10, 2016.
Prior Publication US 2023/0296777 A1, Sep. 21, 2023
Int. Cl. G01S 17/89 (2020.01); G01B 11/00 (2006.01); G01S 7/48 (2006.01); G01S 7/481 (2006.01); G01S 7/497 (2006.01); G01S 17/42 (2006.01); G01B 11/02 (2006.01); G01B 11/22 (2006.01); G01S 17/894 (2020.01); G06T 11/00 (2006.01)
CPC G01S 17/89 (2013.01) [G01S 7/4813 (2013.01); G01S 7/4817 (2013.01); G01S 7/4972 (2013.01); G01S 17/42 (2013.01); G01B 11/00 (2013.01); G01B 11/002 (2013.01); G01B 11/024 (2013.01); G01B 11/22 (2013.01); G01S 7/4808 (2013.01); G01S 7/4811 (2013.01); G01S 7/4814 (2013.01); G01S 17/894 (2020.01); G06T 11/00 (2013.01); G06T 2207/10028 (2013.01)] 9 Claims
OG exemplary drawing
 
1. 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.