optical
Luminous flux according to Bining : 250 lumens.
Colour temperature : 2400 K to 5000 K.
Service Range : 70 % of nominal flux after 50 000 hours.
Colour Rendering Index : CRI 90.
PMMA acrylic lens, efficiency ~90 %.
Available degrees : 10°, 18°, 28°, 40° et Elliptic.