ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,264, issued on June 24, was assigned to QLM Technology Ltd (Paignton, Great Britain).
"Calibration for tuneable diode lidar gas detection" was invented by David Leonard Dennis Lowndes (Bristol, Great Britain), Xiao Ai (Bristol, Great Britain) and Alexander James Dunning (Bristol, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "Calibration methods for lidar equipment are disclosed. In some embodiments, the lidar equipment is provided with an internal gas reference cell with a known concentration of the gas of interest, such as methane (CH4), which provides known absorptions at wavelengths particular to the gas. The lidar system laser bea...