【英文标准名称】:Ophthalmicoptics-Spectaclelenses-Parametersaffectinglenspowermeasurement
【原文标准名称】:眼科光学.柔性焦距透镜组.影响屈光度测量参数
【标准号】:ISO/TR28980-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-01
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC172
【标准类型】:()
【标准水平】:()
【中文主题词】:缺陷;定义;影响量;测量仪器;眼科光学;光学设备;光学仪器;光学测量;光学;规范(验收);规范;柔性焦距透镜组;球面的;试验透镜;试验;公差(测量);镜顶屈光度
【英文主题词】:
【摘要】:ThepurposeofthisTechnicalReportistoexplainthechangesrelatingtopowermeasurementsintherevisededitionsofISO8980-1[6]andISO8980-2[7].Inordertoillustratetheissuesraised,aninter-laboratorypowermeasurementstudywasconductedontendifferentlensesmeasuredbynineorganizationsworldwide.Twenty-fivefocimetersofdifferenttypeswereused.Thetestlensesweresphericallypoweredallyldiglycolcarbonate(ADC)1)hardresinlensessurfacedto–4,00D,–2,00D,0,00D,+2,00D,and+4,00D,eachwithanadditionpowerof2,50D.FivewereD28bifocalsandfivewereprogressivepowerlenses.Themeasurementswerefrontdistancepower,frontnearpower,backdistancepowerandbacknearpower,foreachlensandforeachfocimeterused.Eachlenswasmeasuredninetimes:fivemeasurementstakenwithoutrepositioningthelensandfourmeasurementstakenwiththelensrepositionedeachtime.Theassessedparametersweredividedintothreecategories:discrepanciesduetofocimeterdesignandmeasurementmethods;systematicerrors;randomerrors.Foreachparameter,experimentalresultsaregiven,aswellastheoreticaloneswhenneeded.Measurementdataincludefrontdistanceportionpower,frontnearportionpower,backdistanceportionpowerandbacknearportionpower.NOTETheresultsofallmeasurementsareavailableontheISOTCServerattheaddressgivenintheBibliography[8].Unlessstatedotherwise,inordertoshowrelevantinformation,theresultsshownarefortheD28bifocalswhennodifferentbehaviourwasfoundfortheprogressivepowerlenses.
【中国标准分类号】:C40
【国际标准分类号】:11_040_70
【页数】:15P;A4
【正文语种】:英语