optical
Luminous flux according to Bining: 1500 lumens
Colour temperature: 2700K to 4000K (on 2 à 3 Macadam step);
Service Range: 70 % of nominal flux after 50 000 hours;
Colour Rendering Index: CRI 90.
PMMA acrylic lens, efficiency ~90 %;
Available degrees: 10°, 15°, 25°, 35° & ELL