  Photovoltaics (PV) are a versatile and compact route to harness solar power.
One critical challenge with current PV is persevering the optimal panel
orientation angle with respect to the sun for efficient energy conversion. We
experimentally demonstrate a bespoke array of multi-element telecentric optical
lenses that allow for a greatly increased open circuit voltage (Voc) at solar
incidence angle of between +/-80 degrees compared to a standard panel. Our
prototype lens-let shows a 132% increase in Voc over a full day, at optical
incidence angles of +/-80 degrees. This many element array provides increased
field of view without breaking the conservation of etendue. Our prototype
indicates that this lens-let array could potentially be mass produced and be
readily installed onto any PV system.
