The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 2005
Filed:
Dec. 19, 2002
Johannes Riegl, Trabenreith, AT;
Rainer Reichert, Horn, AT;
Nikolaus Studnicka, Vienna, AT;
Andreas Ullrich, Gablitz, AT;
Johannes Riegl, Trabenreith, AT;
Rainer Reichert, Horn, AT;
Nikolaus Studnicka, Vienna, AT;
Andreas Ullrich, Gablitz, AT;
Riegl Laser Measurement Systems, GmbH, Horn, AT;
Abstract
A process and an apparatus for measuring an object space using an opto-electronic range finder which operates according to a method of determining the time-of-flight of a signal comprise a first measuring step including transmitting optical transmitter signals in form of a beam of a predetermined first divergence angle, receiving optical signals reflected from an object and evaluating a distance value, while scanning the object space. After or before this first take-up step follows a second one wherein reference marks in the object space are taken up with a using an enlarged divergence angle so as to detect reliably the reference marks. The apparatus comprises, accordingly, appropriate devices for varying the divergence angle.