Ledil’s Carmen S B is a 70mm diameter (37mm high) optic that can produce a +/-5° beam from CoB leds with a 6mm diameter emitting surface. To be honest, I am a bit unclear how it works. Ledil explains it thus: “This hybrid of transparent reflector and lens maximizes the optical performance when compared to other ...
70mm optic gets 10° beam from 6mm led
from ElectronicsWeekly http://www.electronicsweekly.com/blogs/led-luminaries/70mm-optic-gets-10-beam-from-6mm-led-2016-06/
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