Method for telemeasuring and telemeter
US6307636A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 1999 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | May 21, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/87
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to enhanced telemeasuring involving the use of laser beams which are initially directed onto a lens (18) in a parallel beam path and which are bundled by the lens (18) into focus. If the object plane is not located in focal point (A), two laser illuminated points (P) can be seen on the object plane. If these laser illuminated points are additionally coded, e.g. in the form of a horizontal or vertical line by corresponding additional lenses or masks in front of the lens (18), images of markings can be obtained. A time coding could also be included so that, for example, one time-delayed laser illuminates after another. The distance between both laser illuminated points serves a measure for the distance of the main lens (18) from the object plane, whereby this measure is computationally dependent upon the focal range of the lens (18) and the stereoscopic basis of both illumination sources in front of the lens (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.