The
reflector is a combination of an ellipse and two parabolic contours. The
two parabolic sections drive light down or across the lighted surface from
one edge. An elliptical section shields the lamp from normal viewing angles
and redirects its light to a parabola. Glare is minimised and asymmetry
of the beam is maximised resulting in high beam efficiency and superior
surface uniformity. Wide lateral distribution permits greater spacing between
luminaires. Because of its rigidity and repeatable accuracy, an extrusion
of high purity aluminium with a bright specular finish was chosen as the
material for the reflector. In 1977, this concept for an ellipse and two
parabolas became elliptipar.
KEY
A
theoretically “perfect” candlepower curve for absolutely
uniform/ even wall illumination with peak candle-power aimed 25’
above nadir.
Candlepower curve
for elliptipar Style T104 with 500W lamp.
