Khatod has introduced silicone lenses for CoB arrays, called SIO3. The material has been chosen for its: sustained transparency over years, resistance to yellowing, UV-resistance, optical efficiency, ...
Yet again, I was asleep when an innovative optic first appeared. This one is a TIR collimator inside a collimator, intended to get fairly narrow beams from CoBs. Sized for fitting in PAR20s and called ...