【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


Product Code:SAE AS399
Title:Direction Instrument, Magnetic (Stabilized Type) (NONCURRENT Oct 1996)
Issuing Committee:A-4 Aircraft Instruments Committee
Scope:To specify minimum requirements for gyroscopically stabilized Magnetic Direction Instruments for use in aircraft, the operation of which may subject the instruments to the environmental conditions specified in Paragraph 3.3. This Aeronautical Standard covers minimum requirements for gyroscopically stabilized Magnetic Direction Instruments for use in aircraft.