Surveying system
US6462810B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Mar 14, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C15/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a surveying system, which comprises a survey instrument main unit for receiving and detecting a guide light projected from a collimation target, a horizontal rotating mechanism 38 for rotating the survey instrument main unit in a horizontal direction, a control unit 37 for controlling the horizontal rotating mechanism, a rough direction detecting unit 24 capable to detect the guide light from all horizontal directions, and a precise direction detecting unit 25 arranged in a direction to collimate the survey instrument main unit from a telescope and detects said guide light only in a range of a predetermined angle, wherein said control unit controls the horizontal rotating mechanism so that a direction of the survey instrument main unit is aligned to the collimation target based on a result of a detection from said rough direction detecting unit, and collimates the survey instrument main unit is collimated to the collimation target based on a result of a detection from the precise direction detecting unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.