Self-calibrating laser tracker and self-calibration method
US9945938B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2013 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Dec 31, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/86
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Some embodiments of the invention relate to a laser tracker for determining the position of a target, comprising a beam source for generating measurement radiation; a base; a beam deflection unit which can pivot with respect to the base −4° C. about two axes in a motorized manner, for the emission and alignment of the measurement radiation and to capture at least one part of the measurement radiation reflected onto the target; a first position-sensitive surface detector and an evaluation and control unit for determining a point of impact of the reflected measurement on the surface detector for generating an output signal in order to determine the position of said target. Said laser tracker also comprises a calibration device for use with a self calibrating function to determine the calibration parameters thereof with respect to a position and/or direction of the measurement radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.