Three-dimensional surveying instrument and three-dimensional surveying method
US10261186B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 2016 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Apr 28, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C3/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides a three-dimensional surveying instrument, which comprises a light emitter for emitting a pulsed distance measuring light, a scanning unit for scanning a range as required including an object to be measured with the distance measuring light from the light emitter, a distance measuring unit for performing a distance measurement based on a reflected light from the object to be measured, at least one image pickup unit for acquiring an image of the object to be measured, a filter unit provided on an image pickup optical axis of the image pickup unit and a control arithmetic unit which enables changing a measurement mode, wherein the filter unit has at least a distance measuring light transmission filter for transmitting the distance measuring light, and the control arithmetic unit calculates a reflectance information of the object to be measured based on a distance measuring light image acquired by the image pickup unit through the distance measuring light transmission filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.