Device for measuring the distance to far-off objects and close objects
US7463339B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2004 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Dec 16, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4818
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for measuring the distances (d) to far-off objects (8) and close objects by emitting modulated laser beams (1) that are reflected on the objects. The device includes an objective (2), structure(s) (12, 36, 38, 39, 40) for selecting beams, and a receiver (7). Beams are bundled by the objective, the beams not only containing the laser beams (3) reflected on the objects but also background beams (28). The beams in an associated cross-sectional region (34, 37) of the bundle are selected from a bundle of beams by the selection structure(s) (12, 36, 38, 39, 40). The cross-sectional region includes a first section (5) and at least one second section (6), laser beams (3) reflected by a far-off object being associated with the first section (5), and laser beams (3) reflected by a close object (8) being associated with the at least second section (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.