Optical Surfaces has received a repeat order from Natural Power for the production of the precision optics module that is a key component in the company's ZephIR laser anemometer.
The accurate prediction of energy yields is fundamental to the success of wind-farm projects.
Yield prediction accuracy increases by collecting high-quality data from numerous points throughout a wind farm and at heights across the full turbine height.
This density of data collection is difficult and expensive to achieve with traditional anemometry masts alone.
In addition, traditional anemometry masts raise significant associated issues, including the need for building permits and health and safety concerns.
The ZephIR laser anemometer 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.
Dr Aris Kouris, sales manager at Optical Surfaces, said: '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.'
