This can be achieved with axially symmetrical light distributions with closely spaced illuminance distribution perpendicular to the wall to effectively illuminate high walls and minimize spill light
in the room (Figs.
In fact, with the new optical efficiency the light distributed has minimal spill light
He points out that most spill light
is not as overpowering as some may think: "It's not all slam-dunk onto the water or deck.
Their wasted spill light
shines into our yards, windows, and telescopes.
The crowded stellar images no longer spill light
over each other, enabling Robert Jedrzejewski (Space Telescope Science Institute) and his colleagues to measure star brightnesses and colors much more accurately than before.
Incorporating this unmatched modular optical technology, the LED luminaires' unique application-specific design allows lumen and energy output to be customized to fulfill the exact needs of the outdoor space -- eliminating wasted energy or obtrusive spill light
into neighboring areas.
The company has pioneered systems using metal halide and LED technologies that improve energy efficiency and provide affordable ways to control spill light
Similarly, 100-W LED PAR luminaires (Altman)--fixed onto existing shelf-like platforms on the trunks' lower halves--were used to provide spill light
for the "leaves" (Figure 1).
The improperly shaded path-, building exterior- and sportlights inadvertently project or spill light
into these residential areas which is a source of citizen complaints for the Parks department.