IEC62471

IEC62471
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IEC62471

IEC62471是一项国际标准,旨在评估和规范光源及灯具的光生物安全性。该标准由国际电工委员会(IEC)制定,适用于所有人工光源,包括LED、荧光灯、白炽灯、卤素灯以及高强度气体放电灯等。其核心目标是确保这些光源在正常使用条件下不会对人体健康造成光生物危害。

IEC62471的主要内容

IEC62471提供了一套系统化的评估方法,用于分析光源对人类健康的潜在影响。它主要关注光辐射可能引发的生物效应,特别是对眼睛和皮肤的危害。根据波长范围的不同,标准将光源分为多个风险类别明挖隧道主体结构模板施工方案,并提出了相应的安全限值。

#1.光生物危害的分类视网膜蓝光危害:短波蓝光(400500nm)可能导致视网膜损伤。紫外辐射危害:紫外线(UV)可能引起皮肤灼伤或眼睛角膜炎。红外辐射危害:长时间暴露于强红外辐射可能损害眼睛晶状体。眩光危害:过强的亮度可能导致视觉不适或视力下降。热辐射危害:高功率光源可能产生过多热量,影响皮肤或组织。

#2.风险等级划分根据光源的光辐射强度和暴露时间,IEC62471将光源分为以下四个风险等级:无风险(RiskGroup0,RG0):正常情况下不会对人体造成任何伤害。低风险(RiskGroup1,RG1):短时间内暴露不会导致危害,但需注意长期使用。中等风险(RiskGroup2,RG2):通常会引起本能反应(如眨眼或移开视线),从而避免伤害。高风险(RiskGroup3,RG3):直接或长时间暴露可能造成不可逆损伤。

#3.测试与评估方法IEC62471提供了详细的测量程序和技术要求,以评估光源的光生物安全性。这包括:测量光源的光谱功率分布(SPD)。计算不同波长范围内的辐射通量和辐照度。比较测量结果与标准规定的安全限值。

#4.适用范围该标准不仅适用于消费类照明产品,还涵盖了工业、医疗和专业领域的光源设备。例如:家用LED灯具商业照明系统医疗诊断设备中的光源显示屏和投影仪

IEC62471的重要意义

此外,该标准也为各国政府制定了相关法规提供了参考依据。例如,欧盟在其《低电压指令》(LVD)和《电磁兼容性指令》(EMC)中引用了IEC62471的要求,以保障公众健康。

总之,IEC62471是光生物安全领域的重要里程碑,为光源产品的设计、制造和使用提供了科学指导,同时也推动了全球范围内光健康研究的发展。

PEFINITIONS,SYMBOLESETABREVIATIONS

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3.2etendue angulaire(α)

3.3diaphragme

Ouverture qui definit la surface sur laquelleIémissionoptique moyenne est mesurée.Pour les mesuresd'éclairementénergetiquespectral,cetteouvertureesthabituellementI'entreedelapetite sphereplaceedevantlafented'entreeduradiometre/spectroradiometre

PHOTOBIOLOGICALSAFETYOFLAMPS ANDLAMPSYSTEMS

ThisInternationalStandardgivesguidanceforevaluatingthephotobiologicalsafetyof lampsandlamp systems including luminaires.Specificallyit specifies the exposurelimits,referencemeasurement techniqueandclassificationschemefortheevaluationandcontrolofphotobiologicalhazardsfrom all electricallypowered incoherentbroadband sources of opticalradiation,includingLEDsbut excluding lasers.inthewavelenqthranqefrom200nmthrough3000nm.

2. NORMATIVE REFERENCES

3.DEFINITIONS,SYMBOLSANDABBREVIATIONS

INITIONS,SYMBOLSANDABBREVIATIONS

uantityobtainedbyweightingspectrallythedoseaccordingtotheactinicactionspectrumvalue ecorrespondingwavelength.

corresporiumgwaveienguni Unit:J·m² Note: This definitionimplies that anactionspectrum is adoptedforthe actinic effect considered,and that itsmaximumvalue is generally normalized to1.Whengiving a quantitative amount, it is essentialtospecifywhichquantitydoseoractinicdoseismeant,astheunitisthesame.

Thisdefinitionimpliesthatanactionspectrumisadoptedforthe actinic effect considered,and hat its maximumvalue isgenerallynormalized to1.When giving aquantitative amount,it is essentialtospecifywhichquantitydoseoractinicdoseismeant,astheunit isthesame.

3.2angularsubtense(α

Visualanglesubtendedbytheapparentsourceattheeyeofanobserveroratthepointof measurement.In this standard subtended angles are denoted by thefullincluded angle,not the half angle.

敦格铁路(青海段)工程复合土工膜技术交底Visualanglesubtendedbytheapparentsourceattheeyeofanobserveroratthepointof measurement. In this standard subtended angles are denoted by thefullincluded angle,not the half angle.

sualanglesubtendedbytheapparentsourceattheeyeofanobserveroratthepoint easurement.Inthisstandardsubtended angles aredenotedbythefull included angle,not theh gle. Unit:radian ote:Theangular subtenseαwillgenerallybemodifiedbyincorporationof lenses and mirrors projector optics,i.e.the angular subtense of the apparent source will differfrom the angul subtenseofthephysicalsource

Unit:radian Note:The angular subtenseαwillgenerallybemodifiedbyincorporationof lenses andmirrorsas projector optics,i.e.theangular subtense of theapparent sourcewill differ from the angular subtenseofthephysicalsource

ote: :The angular subtense α willgenerallybemodified by incorporation of lenses and mirors projector optics,i.e.the angular subtense of the apparent sourcewill differ from the angul subtenseofthephysicalsource

tb/t 3556-2020 铁路桥梁用结构钢3.3aperture,aperturestop

peningthatdefinestheareaoverwhichaverageopticalemissionismeasured.Forspecti tadiance measurements this opening is usually the entrance of a small sphere placed in front of tl diometer/spectroradiometerentranceslit.

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