english: And then when you add the lens to that, you can bundle the light and send it wherever you need it without any need to spill any light to the sky or anywhere else.
non_english: A keď k tomu potom pridáte šošovku, viete usmerniť svetlo a vyslať ho tam, kam potrebujete bez plytvania svetlom na oblohe alebo kdekoľvek.