Automatic survey instrument
US6222678A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Sep 8, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C1/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides an automatic survey instrument, which comprises an objective lens, a focusing lens, and optical means positioned between the objective lens and the focusing lens, all of the components being arranged on an optical axis, wherein the optical means comprises a first reflection surface at least for transmitting visible light and a second reflection surface at least for transmitting light at a predetermined wavelength, and reflection light from the first reflection surface reaches the second reflection surface and reflection light from the second reflection surface runs perpendicularly to the optical axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.