Optical 6D measurement system with two fan shaped beams rotating around one axis
US5742394A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 14, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Jun 14, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/163
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for the determination of the distance and orientation of an object carrying at least three light sensors from a fixed reference point when the object is irradiated by two modulated scanning beams of known angular orientation and rotational frequency. Timing circuitry located in the control processor determines the time interval .DELTA.t, between successive interceptions of the object by each of the beams. Knowledge of this time interval and the scanning beams' relative positions and angular orientations permits calculation of the object's spatial coordinates. The optical beams utilized are fan-shaped in cross-section. The method of operation is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.