Stadium Light Spill Control: Bright Inside, Dark Outside

Night aerial view of a stadium. The grass field inside is illuminated to an extremely high and uniform illuminance by four sets of high-mast floodlights. The green is saturated, players and lines are incredibly clear, and there are almost no noticeable shadows on the field. However, all luminaires are precisely controlled with light distribution and equipped with baffles, so the light cuts off sharply at the field's edge. The area behind the stands, surrounding roads, and adjacent residential areas all remain at very low brightness. From above, the stadium appears as a sharp-edged glowing rectangle embedded in the dark city, with no light spilling into the surroundings and no light beams appearing in the sky. Avoid: light spilling into surrounding blocks, light beams and halos appearing in the sky, illuminating the stands as brightly as the field, noticeable multiple shadows appearing on the field.

Translated from Chinese by AI.

夜間的體育場鳥瞰,場內的草皮被四組高桿投光燈照到極高且均勻的照度,綠色飽和,球員與線條無比清晰,場地上幾乎看不到明顯的陰影。但所有燈具都經過精密的配光控制與遮光板處理,光在場地邊界處急速截止,看台後方、周邊道路與鄰近住宅區全部維持在很低的亮度。從空中看,體育場像一個邊緣銳利的發光矩形嵌在黑暗的城市裡,光沒有溢出到周邊,天空也沒有出現光柱。避免:讓光溢散到周邊街區、在天空出現光束與光暈、把看台照得跟場內一樣亮、讓場內出現明顯的多重陰影。