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Device for optically scanning and measuring an environment

  • US 8,384,914 B2
  • Filed: 07/20/2010
  • Issued: 02/26/2013
  • Est. Priority Date: 07/22/2009
  • Status: Active Grant
First Claim
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1. Device for optically scanning and measuring an environment, which device is designed as a laser scanner, having a center, which defines for a scan the stationary reference system of the laser scanner and the center of this scan, a base, a measuring head which is rotatable relative to the base, a light emitter which is comprised by the measuring head and which emits an emission light beam, a light receiver, which is comprised by the measuring head and which receives a reception light beam being reflected by an object in the environment of the laser scanner or scattered otherwise, a control and evaluation unit which, for a multitude of measuring points of the scan, determines at least the distance between the center and the object, wherein the laser scanner for registering a scene with scans having several, different centers, is movable as a whole between the different centers, characterized in that an optical measuring device is provided for registering the path followed by the laser scanner as a whole between the different centers, the optical measuring device registering its movement, as a whole, relative to a reference surface by means of determination of the optical flow, wherein the optical measuring device is mounted on the base or on the measuring head or on a carriage, by means of which the laser scanner being mounted on the carriage is movable, as a whole, between the different centers, relative to the reference surface.

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