Laser tracker with calibration unit for self-calibration
US9766326B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2013 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Jun 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/66
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Embodiments of the invention relate to a laser tracker for continuous tracking of a target, with a beam source for generating measuring radiation, a base defining a vertical axis and a support, wherein the support is pivotable by motor power about the vertical axis relative to the base and thereby a horizontal pivot angle is defined. The tracker further comprises a beam directing unit pivotable by motor power, which defines a vertical pivot angle for orienting the measuring radiation and for receiving measuring radiation, an angle measuring functionality for determining the horizontal pivot angle and the vertical pivot angle, a distance measuring functionality and a photosensitive surface detector for detecting an incidence position of the reflected measuring radiation. The base has a self-calibration unit with a first retroreflective reference target and an optical assembly functioning as a reducing lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.