篮球馆照明的坑在'垂直照度'：地面够亮不等于看得见球，球员起跳争球时视线朝上，空中亮度不足就漏接、误判。
按JGJ153-2016：训练300lx、业余比赛500lx、专业赛事1000lx（均为主摄像机方向垂直照度分级）；灯具布置避开篮筐上方主视线区，防眩等级GR≤30。
我们按场地等级定制三档方案并预留电视转播升级接口，灯桥改造一次到位，后期从训练馆升赛事馆不动土建。
Basketball halls hinge on vertical illuminance: a bright floor does not mean a visible ball — players look skyward for rebounds, and insufficient aerial brightness causes misses and misjudgement.
Per JGJ153-2016: training 300 lx, amateur 500 lx, professional 1000 lx (vertical, toward main camera); luminaires avoid the prime sight zone above the hoops with glare rating GR≤30.
We tailor three tiers per venue class with pre-reserved broadcast upgrade interfaces — one-time luminaire-rail retrofit lets a training hall become a competition venue without civil works.
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