Luminous efficacy of white LED in the mesopic vision state-中国期刊网

摘要 Thetraditionaleyesensitivityfunctionbasedonphotopicvisionisnotapplicableinthemesopicvisionstate.Themesopicvisionisstudiedbyusingthephotopicandscotopicvisionstatesensitivityfunctions.Andthemodelwhichlinksthemesopicsensitivitywiththephotopicandscotopicstatesisbuilt.Basedonthemodel,theluminousefficacyofmesopicvisioniscalculatedandappliedtothespectrumdistributionofLEDlightsources.TheresultsshowthattheluminousefficacyofacommercialYAGphosphorconvertedwhiteLEDisupto172.7lm/Watmesopicvision,whichis67.2%higherthanthatofphotopicvisionstate.WealsoconcludethattheoptimalspectralpowerdistributionoftheLEDwillgreatlyincreasethemesopicluminousefficacy.

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Luminous efficacy of white LED in the mesopic vision state

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Luminous efficacy of white LED in the mesopic vision state

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