Optical device for detecting a reflected light beam
US11360194B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2018 |
| Grant date | Jun 14, 2022 |
| Priority date | — |
| Expiry date | Apr 15, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical device for detecting a light beam reflected by a remote target comprises a light source, which is designed to emit the light beam in a predetermined direction at the remote target, and a primary lens, which is designed to focus the light beam reflected by the remote target into a first focal point. The optical device further comprises a relay lens system, which is arranged in such a way that the first focal point is located between the primary lens and the relay lens system and which is designed to focus the light beam reflected by the remote target and diverging starting from the first onto a second focal point. A detector unit is essentially arranged in the second focal point. A diaphragm is arranged within a cross-section, which is normal to the optical axis, of the light beam reflected by the remote target between the first focal point and the relay lens system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.