GB T513721996标准英文版.docx

GB T513721996标准英文版.docxTheinternationalstandardISO3538/DIS-1992Roadvehicles一Safetyglazingmaterials―testmethodsforopticalpropertiesisequivalentlyadoptedforthisstandard・ThesubjectcontentandtheapplicationscopeThisstandardregulatesthetestme什】odsforopticalpropertiesofsafetyglazingmaterialsforroadvehicles・Thisstandardisapplicablefortheroadvehicles一safetyglazingmaterials(hereinafteritisshortforsafetyglazingmaterials).posedbyglassandothermaterials・TestconditionsExcepttorthespecialregulation,thetestshallbecarriedoutonthefollowingconditions:Temperature:20±5°C;Atmosphericpressure:&60x10”〜1・06x10?Pa;Therelativehumidity:40%〜80%.,:Incandescentbulb,,856±50K,andthisvoltageshallberemainedwithin1/1,:(seefigure1)posedbytwolensesLIandL2withthefocallengthnotshorterthan500mm,.TheAldiaphragmisinstalledatonesideawayfromthelightsourceintheareawhichisl00±50mtnawayfromthelensLI,andthediameterofthelightbeamshallberestrictedwithin7±lmm・ThesecondA2diaphragmshallbeplacedinfrontofthelensL2whichhasthesamepropertyasthatofL1,,whosediameterisslightlybiggerthanthesectionwiththemaximumsizeofthelightsourceimage,eptor・:missiononIllumination(CIE).,theholesectionofthesphereshallhavethesizewhichistwicethanthatofthesectionwiththemaximumsizeo