U30光源(U3000,UL3000),美国商业荧光-色温3000k, 稀土商业荧光灯,用于商场照明。部份美国客户指定商店光源,如沃尔玛(wal-mart),Sears等. Philips U30为目前市面上*受用的3000K色温灯管,举凡GretagMacbeth、GTI等国际大厂的灯箱,皆使用此灯管做为3000K色温标准光源。
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标准光源对色灯箱*灯管U30,它可以与TL83通用,因为它们色温都为3000K