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. 04, 2006
Filed:
Aug. 08, 2003
Torsten Gogolla, Schellenberg, LI;
Andreas Winter, Feldkirch, AT;
Helmut Seifert, Serba, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A laser distance measuring device () includes a laser diode () for emitting a high frequency intensity modulated measurement light beam () and connected with a signal generating unit (SGU) that generates a high frequency measurement signal () for high frequency signal transfer, at least one receiver photodetector () for receiving a measurement light beam () reflected from a measurement object () and connected to a high frequency demodulator () for generating a low frequency phase delay signal (S) containing phase information of the reflected intensity modulated measurement light beam (), and a microcontroller (μC) for calculating a distance (D) from the phase delay signal (S) and connected to the high frequency demodulator (), with the microcontroller (μC) being connected to a control photodetector () arranged in the measurement light beam () for low frequency transfer for determining an interference modulation component.