{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "The invention relates to a method for deriving alignment information of a surface of a structure, the alignment information comprising a deviation of an alignment of the surface with respect to a light plane. The method comprises detecting at a plurality of light-receiver units, an impingement…",
  "path": "/patents/1409299",
  "publishedAt": "2024-09-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01B11/272",
    "LEICA GEOSYSTEMS AG [CH]"
  ],
  "textContent": "The invention relates to a method for deriving alignment information of a surface of a structure, the alignment information comprising a deviation of an alignment of the surface with respect to a light plane. The method comprises detecting at a plurality of light-receiver units, an impingement position of the light plane on a photo sensor that has a known relative position in relation to the surface, determining, for each light-receiver unit and based on the impingement position and the known relative position, a crossing position value of the light plane with respect to the surface, performing a combined analysis of the crossing position values from the plurality of light-receiver units to derive alignment information comprising the deviation of the alignment of the surface of the structure relative to the light plane, and displaying the alignment information to a user. The invention also relates to computer programme product, a light-receiver unit and a system comprising a plurality of light-receiver units for performing the method.",
  "title": "LASER-BASED LEVELLING SYSTEM"
}