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OPTICS AND OPTICAL INSTRUMENTS - FOCIMETERS - PART 1: GENERAL PURPOSE INSTRUMENTS USED FOR MEASURING SPECTACLE LENSES (ISO 8598-1:2014)
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Available format(s): Hardcopy, PDF
Language(s): English
Published date: 01-01-2014
Publisher: National Standards Authority of Ireland
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.Only cited Standards give presumption of conformance to New Approach Directives/Regulations.Dates of withdrawal of national standards are available from NSAI.
ForewordIntroduction1 Scope2 Normative references3 Terms and definitions4 Technical requirements for general purpose focimeters5 Metrological requirements6 Test procedures7 MarkingAnnex A (informative) - Use of correction values when measuring spectacle lensesAnnex B (informative) - Example for evaluation of uncertainty of measurement for automated focimeters for general useAnnex C (normative) - Specifications of special reference lensesAnnex D (informative) - Information for users on the performance of general purpose focimeters covered by this part of ISO 8598Bibliography
Defines requirements and test methods for general purpose focimeters designed for the measurement of vertex powers, cylinder axis, prismatic power and prism base setting within a restricted area at a specified location of a lens.
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