Monostatic laser rangefinder device
US11435450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2018 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Apr 9, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/094003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A monostatic laser rangefinder device including: a laser light source; a photodetector; a double-clad optical fiber coupled to a collimating and focusing device; and an optical fiber diplexer. The diplexer includes a first optical fiber forming an input port and a second, multimode optical fiber forming a first output port. The first fiber is coupled to the laser source, the second fiber is coupled to the photodetector, and the double-clad fiber forms a second output port. A numerical aperture of a light guide formed of an inner and outer cladding of the double-clad fiber is less than or equal to 0.5, and greater than 0.1. The end of the double-clad fiber facing the collimating and focusing device has a face inclined with respect to an axis perpendicular to the axis of the fiber by an angle greater than or equal to half of the arcsine of the numerical aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.