配光曲线对光污染影响的量化分析TheAnalysisofLuminaire’sLightDistributionforReducingLightPollution概述Abstract•光污染的四个焦点：Lightpollutionincludes–天空辉光SkyGlow–光侵扰LightTrespass–眩光Glare–能源浪费EnergyWaste•四个焦点在技术上都指向光的控制Allthesefouraspectsshouldbetechnologicallyresortedtothelightcontrol•光的控制主要在于灯具的配光曲线设计Lightcontrolmainlydependonthecurveoflightdistribution国务院概述Abstract•选用不合理的配光曲线的原因很多Manyexistingfactsmakeusreluctantlytochoosethelightingfixtureswithunreasonablelightdistributioncurves–设计者没有理解配光曲线的差别；Thedesignersdon'trecognizethedifferencesoflightdistributioncurvesamongsomesimilarlightingfixtures–设计者在规定的成本之下无法找到合适配光的器具；Thedesignerscan'tfindthesuitablelightingfixtureswithadequatelightdistributioncurveespeciallylimitedbythebudget–施工者与设计者之间没有进行充分的技术沟通；Lackofsufficientdialogandtechnicalcommunicationsbetweenthetechniciansandthedesigners–很多照明系统的建设队伍并没有受到专业训练。Theconstructionteamsdon'thavebeentrainedtofulfilltheirprofessionallightingskills.控光不好Lightnotbewellcontrolled天空辉光UnwantedUp-lightCauseSkyglow眩光WrongpositionorAngleCauseGlare光侵扰LightingfixtureswithoutshieldCauseLightTrespass能源浪费UnreasonablelightdistributingCauseWasteEnergy说明claim•采用AGI321.94版本计算；UsingAGI32version1.94tocalculate•根据厂家提供的最新光度数据；Usingthenewest.iesdataprovidedbyManufacturers•照度根据灯具的初始流明进行计算，不考虑维护系数；Illuminancewascalculatedaccordingtoluminaries'initiallumens,maintenancefactordoesnotbeconsidered•计算结果考虑场景的反射，收敛系数不大于0.2；Thecalculatedresultconsideredreflection,convergencecoefficient≤0.2•简单模拟了物体表面的实际反射系数，所以不同物体的亮度与照度图面上有区别。Simplysimulatedthesurfaceoftheobject’sactualreflectioncoefficient,sothereexistdifferencesinbrightnessandilluminanceinrenderimages案例一CASEⅠ非截光灯具最容易产生无用的上射光通进而导致天空发亮It’smostpossiblefornon-cutoffluminairetogeneratetheuselessupwardluminousfluxthencauseskyglow.这是中等城市的一条小街道Thisisastreetinamid-sizedcity比较截光灯具与非截光灯具在相同环境条件下的上射光通量ComparisonofthecutoffluminaireandtheNon-cutoffluminaire’supwardluminousfluxasgeneratedunderthesamesituation-arequitedifferent场景theScene非截光Non-cutoff截光Cutoff渲染效果RendingImage非截光Non-cutoff截光Cutoff亮度分布LuminanceDistribution非截光Non-cutoff截光Cutoff照度分布PseudoColorImage非截光Non-cutoff截光Cutoff数据比较DataCompare非截光灯具Non-cutoff截光灯具Cutoff光源/Lamp6*100W金卤灯/MH6*100W金卤灯/MH光通总量/TotalLuminousFlux6*9000lm6*9000lm总功率/TotalPower6*135W6*135W灯具高度/LuminaireHeight2.5m2.5m路面平均照度/AverageIlluminanceonroad22.64lux48.32lux路面最大照度/MaxIlluminanceonroad43lux53lux路面最小照度/MinIlluminanceonroad10lux40lux路面照度均匀度/IlluminanceUniformityonroad0.440.83上射浪费光通比/UWLR(UpwardWasteLightRatio)49.3%0上射浪费光通总量/UpwardWasteLight26622lm0浪费能源/WasteEnergy399Watts0若照度相等，则浪费InthecaseofsameIlluminance,thenwaste>800Watts-案例二CASEⅡ即使采用截光灯具，也可能因配光不合适而造成上射光通Althoughweselectedcutoffluminaires,theupwardwasteluminousalsocouldbegeneratedbecauseofunsuitablelightdistribution.这是某高速公路的收费站Thisisatollstationofthefreeway.比较两种截光灯具由于配光曲线的不同而对天空造成不...
