Surveying instrument
US7055253B2 · kind B2 · utility
49Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2003 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Oct 22, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S33/21
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A surveying instrument includes a surveying instrument body rotatable about each of a vertical axis and a horizontal axis; and a first collimator optical system and a second collimator optical system each of which is positioned in the surveying instrument body to collimate the surveying instrument relative to a survey point, a viewing angle of the second collimator optical system being smaller than a viewing angle of the first collimator optical system. A first collimating operation is performed with the first collimator optical system before a second collimating operation is performed with the second collimator optical system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.