JJG952-2000-瞳距仪检定规程.pdf

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1、中华人民共和国国家计量检定规程JJG952-2000瞳距仪PupilDistanceMeter2000一05一08发布2000一10一01实施国家质量技术监督局发布J.IG952-2000瞳距仪检定规程广口.~。.0.O.口.O.补。.0.O.0.~口.、弓0弓0乙仑VerificationRegulation{JJG952-2000}:c{0ofPupilDistanceMeter本规程经国家质量技术监督局于2000年05月08日批准，并自2000年10月01日起施行。归口单位:全国光学计量技

2、术委员会起草单位:中国计量科学研究院本规程委托全国光学计量技术委员会负责解释JJG952-2000本规程主要起草人:王莉茹(中国计量科学研究院)朱建平(中国计量科学研究院)参加起草人:马振亚(中国计量科学研究院)JJG952-2000目一录1范围2概述(1)3计量性能要求··············································································⋯⋯(2)3.1示值误差·.......................

3、...............................................................(2)3.2不对称性误差···········。·············，·················································⋯⋯(2)3.3舍入误差································································。················⋯⋯(2)4通

4、用技术要求·················。····························································⋯⋯(2)4.1外观要求··············································································。··⋯⋯(2)4.2照明均匀性·····························································

5、·。···············⋯⋯(3)4.3测量能力·················································································⋯⋯(3)5计量器具控制···························、··、·····················、·····、···········、···，·，·一(3)5.1检定条件·······································

6、···························。··············⋯⋯(3)5.2检定项目和检定方法····················。··············································一(3)5.3检定结果的处理·.............................................................................(5)5.4检定周期······················

7、··················。··。·····································⋯⋯(5)附录A瞳距仪检定记录············。··········································，··········⋯⋯(6)附录B瞳距仪检定证书(背面)格式·····。··········································⋯⋯(7)JJG952-2000瞳距仪检定规程范围本规程适用于瞳距仪的首次检定、后

8、续检定和使用中检验。2概述瞳距仪是在验光配镜过程中，用于测量人眼两瞳孔之间距离的一种测量仪器。验光配镜一般需要对患者在视近和视远两种状态下的视力进行矫正。因此，瞳距测量实际上也就包含了对患者视远时的瞳距测量和视近时的瞳距测量。通常情况下，是把5m或5m以外的距离作为人眼的远用距离，而把300mm作为人眼的近用工作距离。人眼视物时，其视网膜上会形成影像。物点与视网膜中心的连线被称为视轴。人眼的角膜及水晶体的光轴与视轴虽然很接近，却并不重合。人工测量瞳距，是指验光师用直尺，直接测量患者右瞳孔的外侧(