optical
Luminous flux according to Bining : 4500 lumens by meter;
Colour temperature : from 2400 K to 5000 K;
Service Range : 70 % of nominal flux after 25000 hours;
Colour Rendering Index : CRI 80 or CRI 90.
PMMA acrylic lens, efficiency ~90 %;
Available degrees : 10°, 18°, 28°, 40° & Elliptic.