“Dark Sky” technology for ERCO means innovative photometrics that guide the light of bollard luminaires where it is needed – onto paths and squares. No troublesome glare, no wasteful spill light above the horizontal plane – moon and stars remain visible. Panorama excels in effective illumination of open spaces, emitting light throughout a full 360° and up to 5m deep over the area to be illuminated. Its efficiency means spacing of up to 10m, and the gentle gradient of the beam makes it easier to see by avoiding harsh contrasts and rapid visual adaptation. The low level of brightness on the glass cylinder further improves the already excellent visual comfort of the Panorama.
Source from www.erco.com