Process and apparatus for measuring an object space
US6879384B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2002 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Dec 19, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process and an apparatus for measuring an object space using an opto-electronic range finder which operates according to a method of determining the time-of-flight of a signal comprise a first measuring step including transmitting optical transmitter signals in form of a beam of a predetermined first divergence angle, receiving optical signals reflected from an object and evaluating a distance value, while scanning the object space. After or before this first take-up step follows a second one wherein reference marks in the object space are taken up with a using an enlarged divergence angle so as to detect reliably the reference marks. The apparatus comprises, accordingly, appropriate devices for varying the divergence angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.