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:
Feb. 18, 2014
Filed:
May. 29, 2009
Thomas Jensen, Rorschach, CH;
Marcel Rohner, Heiden, CH;
Thomas Jensen, Rorschach, CH;
Marcel Rohner, Heiden, CH;
Leica Geosystems AG, Heerbrugg, CH;
Abstract
In a distance-measuring method comprising a distance-measuring apparatus having at least one frequency-modulatable laser source for producing chirped laser radiation. The laser radiation has radiation components with opposite chirp as time dependency of the modulated wavelengths, the simultaneous oppositeness of the frequency curve being realized via an optical delay path () for one of the two radiation components. The radiation produced is passed in a measuring interferometer () to a target () and parallel via a local Oscillator. After reception of the laser radiation scattered back from the target () and passed via the local oscillator path, the laser radiation received is converted into signals and the distance to the at least one target () is determined from the signals on the basis of interferometric mixing.