ANSI/ASTM F1753-1996 射箭弓用单镜头观测镜分类和标记规范

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【英文标准名称】:SpecificationforClassificationandMarkingofSingle-LensScopesforUsewithArcheryBows
【原文标准名称】:射箭弓用单镜头观测镜分类和标记规范
【标准号】:ANSI/ASTMF1753-1996
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Archery;Bows;Classification;Lenses;Marking;Scope;Single;Specification;Sports;Sportsequipment;Watersportsequipment
【摘要】:Thisspecificationcoverslensesandscopesusedinconjunctionwitharcherybows.Itestablishesastandardizedsystemfortheclassificationoftheselensesintermsoftheiropticalmagnification,themarkingofthescopesinwhichthelensesaremounted,andchartsdepictingtheempiricalrelationshipoftheapparentmagnificationtheconsumercanexpecttoobtainwhenacorrectlymarkedlensisusedunderspecificconditions.AcuityThevisualacuityoftheselensesisrelatedtothemagnificationofthelensingeneral.Fortheaveragesubjecttherecanbeanimprovementinacuitywithlenseshavingapparentmagnificationsof2to4andadecrementinacuitywithlensesof6andgreater.Acuityalsoisdependentonotherfactors,suchasthespecificindividual,lensquality,andthesizeandqualityoftherearaperture(peep)usedinconjunctionwiththelens.Beyondthisstatement,acuityisnotthesubjectofthisspecification.
【中国标准分类号】:Y55
【国际标准分类号】:97_220_40
【页数】:
【正文语种】:英语