Patent ID: 11867840
Assignee: SAFRAN VECTRONIX AG
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 13:
14. Device for measuring distances, comprising:
a laser rangefinder for time-of-flight based distance determination along a laser axis between the device and a target object, the laser rangefinder comprising a laser transmission channel and a laser receiver channel, wherein the laser rangefinder comprises a pumping laser, a thulium and/or holmium doped fiber laser with a thulium and/or holmium doped fiber section in between two Bragg gratings and an emitting connection, wherein the thulium and/or holmium doped fiber laser is pumped by the pumping laser and configured to output laser light with a wavelength in the range of 1900 nm to 2150 nm, wherein the laser rangefinder comprises a Distributed Feed-Back (DFB) laser diode emitting laser light at a wavelength around 2000 nm and being connected to a pumping connection of the thulium and/or holmium doped fiber laser wherein the Distributed Feed-Back laser is configured to form a pulse trains by gain switching or modulation, respectively, of the drive current applied to the 2000 nm laser diode.