Assertion: projector's light | /r/CapableOf | leave the lens
Facets:
value: before that
type: TEMPORAL
Source sentences:
text: The fact is, by the time the light leaves the lens (actually, well before that), it's no longer a coherent beam.
text: A variety of materials put on high quality lenses to minimize the amount of light reflected back to the lamp and the amount of ambient light that mingles with the focused light leaving the lens.