Optical Surfaces has received a repeat order to produce optical modules for the ZephIR 300 wind lidar from Natural Power.
A spokesperson at Optical Surfaces said: 'To achieve the ultimate in performance with the fewest components our optical module incorporates a 200mm focal length aspheric doublet.
'The ability of the ZephIR to produce variable focus at different heights is achieved by using a "point" source originating from a single-mode fibre, which is located at different longitudinal positions just beyond the front focal plane of the optical module.
'The aspheric lenses in the optical module have a durable V-coat to allow the lens surfaces to be cleaned and to optimise performance at 1.5 microns,' the spokesperson added.
The accurate prediction of energy yields is fundamental to the success of wind-farm projects.
The ZephIR 300 wind lidar provides complete wind resource measurement including horizontal and vertical wind speed, wind direction and turbulence at any height up to 200m without the need for a mast, thereby eliminating the need for planning permission or working at height.
The portability of ZephIR and ease of deployment makes high-density data collection a reality with 50 measurements per height per second, both horizontally and vertically across the extent of the measurement site.
