Unverified85% confidenceDecision RuleTime unknown
导光管管径选择需匹配采光面积：直径250mm约照亮8-12㎡，直径350mm约照亮15-20㎡，530mm可覆盖25-35㎡，选型时按房间面积÷12反推最小管径
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Unverified导光管管径选择需按采光面积计算：250mm管径适合约10㎡室内空间，350mm适合15-20㎡，530mm适合25-35㎡的开阔空间（如客厅、车库）91% similarUnverified灯头直径直接决定射程：直径21mm级筒射程约150-200米，直径40mm以上可达300米以上；便携性与射程需按需权衡，口袋携带首选筒身直径不超过25mm81% similarUnverified筒灯/射灯开孔尺寸与安装深度要匹配吊顶：常见开孔75mm/85mm，吊顶净空需预留至少80-100mm安装深度，超薄款可低至30mm但散热和寿命打折78% similarUnverified串联灯笼看间距和总长：常见规格为2米/6个、3米/10个，购买前需量好悬挂点跨度，间距30-40cm视觉最饱满78% similarUnverified家用管道内窥镜镜头直径应小于被检管道内径的1/2，检测DN50（内径约46mm）以下的家用下水管建议选5.5mm或8mm镜头，25mm以下细管需选3.9mm微型镜头77% similar
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