【摘 要】
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The approved method LM-79 developed by the Illuminating Engineering Society (IES) describes procedures and precautions to perform reproducible measurements on Solid State Lighting products and is wide
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The approved method LM-79 developed by the Illuminating Engineering Society (IES) describes procedures and precautions to perform reproducible measurements on Solid State Lighting products and is widely used worldwide.However,since the publication of LM-79 in 2008 the SSL technology advanced significantly.The requirements for measurement conditions and appropriate measurement techniques changed.In addition,the document is restricted to dealing with LED lamps and luminaires and thus does not cover LED light engines and module
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