Assertion: optical collimator | /r/CapableOf | produce a cylinder of parallel light
Facets:
Source sentences:
text: The optical collimator produces a cylinder of parallel light so the display can only be viewed while the viewer's eyes are somewhere within that cylinder, a three-dimensional area called the head motion box or eyebox .
text: The optical collimator produces a cylinder of parallel light so the display can only be viewed while the viewer's eyes are somewhere within that cylinder, a three-dimensional area called the or .