Abstract: A system for measuring velocity of particles such as particles in air is a Light Detection and Ranging (LIDAR) system, having a micro-electro-mechanical-system (MEMS).
Type:
Grant
Filed:
December 21, 2015
Date of Patent:
August 4, 2020
Assignee:
Windar Photonics A/S
Inventors:
Jørgen Korsgaard Jensen, Peter John Rodrigo, Christian Pedersen, Qi Hu
Abstract: A system for measuring velocity of particles such as particles in air is a Light Detection and Ranging (LIDAR) system, having a micro-electro-mechanical-system (MEMS).
Type:
Application
Filed:
December 21, 2015
Publication date:
February 7, 2019
Applicant:
Windar Photonics A/S
Inventors:
Jørgen Korsgaard Jensen, Peter John Rodrigo, Christian Pedersen, Qi Hu
Abstract: The present invention relates to a low-cost LIDAR system. The system may be integrated in a wind turbine for measurement of the approaching wind field. One embodiment relates to a LIDAR system comprising a beam generating section adapted for generating a substantially linearly polarized output beam, and a beam steering section comprising a first optical device for controllably altering the polarization of the output beam, said first optical device in optical connection with a first polarizing beam splitter, said beam steering section adapted for directing the outputbeam interchangeably between a first direction and a second direction.
Type:
Grant
Filed:
March 25, 2013
Date of Patent:
October 10, 2017
Assignee:
Windar Photonics A/S
Inventors:
Christian Pedersen, Peter John Rodrigo, Theis Faber Quist Iversen
Abstract: The present invention relates to a compact, reliable and low-cost coherent LIDAR (Light Detection And Ranging) system for remote wind-speed determination, determination of particle concentration, and/or temperature based on an all semiconductor light source and related methods. The present invention provides a coherent LIDAR system comprising a semiconductor laser for emission of a measurement beam of electromagnetic radiation directed towards a measurement volume for illumination of particles in the measurement volume, a reference beam generator for generation of a reference beam, a detector for generation of a detector signal by mixing of the reference beam with light emitted from the particles in the measurement volume illuminated by the measurement beam, and a signal processor for generating a velocity signal corresponding to the velocity of the particles based on the detector signal.