Measurement system for determining six degrees of freedom of an object
US7312862B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2006 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | May 25, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measurement system for determining six degrees of freedom (α, β, d, φ, χ, ψ) of a reflector (2) or of an object (3) on which the reflector is arranged, comprises an angle- and distance measurement apparatus (1), e.g. a laser tracker, operating with a laser beam as a measurement beam (4). The reflector (2) is designed for a parallel reflection of the measurement beam (4) and has an apical opening or surface (6), in a manner such that a part of the measurement beam (4) directed onto the reflector (2), passes through the apical opening or surface (6), and is incident on a light-sensitive surface (7) arranged behind the reflector apex. Five degrees of freedom (α, β, d, φ, χ) of the reflector (2) or the object (3) are computed from measurement data produced by the angle- and distance measurement apparatus (1) and by the light-sensitive surface (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.