Laser tracker with position-sensitive detectors for searching for a target
US9696140B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 2012 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Jul 7, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/66
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Some embodiments of the invention relate to a laser tracker for continuously pursuing a reflective target and for determining the position of the target. The method may include a base which defines a vertical axis, a beam guiding unit for emitting a measurement beam, the beam guiding unit being pivotable by motor relative to the base about the vertical axis and an inclination axis, and a measurement axis being defined by an emission direction of the measurement beam. The laser tracker may include a precision distance measurement unit and an angle measurement function. The target search unit may have illumination source for illuminating the target, a first camera with a first position-sensitive detector and at least one part of the illumination beam reflected on the target being determinable as a first target position, and a control and evaluation unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.