【英文标准名称】:StandardPracticeforMeasuringColorimetricCharacteristicsofRetroreflectorsUnderNighttimeConditions
【原文标准名称】:测量夜间条件下反射镜比色性能的标准实施规范
【标准号】:ASTME811-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E12.10
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:chromaticity;retroreflector;Chromaticity;Color--retroreflection/retroreflectors;Colorimetricanalysis;Lighttransmissionandreflection;Nighttimeconditions;Retroreflectors;Telecolorimeter/telespectroradiometer
【摘要】:Thispracticedescribesaprocedureformeasuringthechromaticityofretroreflectorsinanighttime,thatis,retroreflective,geometryofilluminationandobservation.CIEStandardSourceAhasbeenchosentorepresentatungstenautomobileheadlamp.Althoughthegeometrymustbespecifiedbytheuserofthispractice,itwill,ingeneral,correspondtotherelationshipbetweenthevehicleheadlamp,theretroreflector,andthevehicledriver''seyes.Thus,thechromaticitycoordinatesdeterminedbytheproceduresinthispracticedescribenumericallythenighttimeappearanceoftheretroreflector.1.1Thispracticedescribestheinstrumentaldeterminationofretroreflectedchromaticitycoordinatesofretroreflectors.Itincludesthetechniquesusedinaphotometricrangetomeasureretroreflected(nighttime)chromaticitywitheitheratelecolorimeterortelespectroradiometer.1.2Thispracticecoversthegeneralmeasurementprocedures.AdditionalrequirementsforspecifictestsandspecificationsaredescribedinSection7.1.3ThedescriptionofthegeometryusedinthenighttimecolorimetryofretroreflectorsisdescribedinPracticeE808andthemethodsforcalculationofchromaticityarecontainedinPracticeE308.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N30
【国际标准分类号】:93_080_30
【页数】:8P.;A4
【正文语种】:英语