Ledil is aiming at architecture narrow-beam wall-washing with a sharp cut-off lens called Leia – achieving beams around 3° with single chip 3535 high-power LEDs – I think this is ±1.5°, and will check. High efficiency is claimed, but looking down the list of applications suggests it is around 50% – rather than the ~90% Ledil ...
This story continues at Ledil aims at architecture with narrow beam wall-grazer
Or just read more coverage at Electronics Weekly
from Electronics Weekly https://www.electronicsweekly.com/blogs/led-luminaries/ledil-aims-architecture-narrow-beam-wall-grazer-2018-08/
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