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CEN
EN ISO 8598-1:2014

EN ISO 8598-1:2014

Current

Current

The latest, up-to-date edition.

Optics and optical instruments - Focimeters - Part 1: General purpose instruments (ISO 8598-1:2014)

Published date

09-24-2014

Publisher

Comite Europeen de Normalisation

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements for general purpose focimeters
5 Metrological requirements
6 Test procedures
7 Marking
Annex A (informative) - Use of correction values when
        measuring spectacle lenses
Annex B (informative) - Example for evaluation of
        uncertainty of measurement for automated
        focimeters for general use
Annex C (normative) - Specifications of special
        reference lenses
Annex D (informative) - Information for users on the
        performance of general purpose focimeters covered
        by this part of ISO 8598
Bibliography

ISO 8598-1:2014 specifies 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. This excludes instruments that can only measure the whole lens at once.It is applicable to instruments typically intended for use by the ophthalmic community, with the capability to demonstrate conformity of spectacle lens products with the International Standards existing for these lenses.

Committee
CEN/TC 170
DevelopmentNote
Supersedes EN ISO 8598. (10/2014)
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current
Supersedes

BS EN ISO 21987:2017 Ophthalmic optics. Mounted spectacle lenses
I.S. EN ISO 21987:2017 OPHTHALMIC OPTICS - MOUNTED SPECTACLE LENSES (ISO 21987:2017)
EN ISO 21987:2017 Ophthalmic optics - Mounted spectacle lenses (ISO 21987:2017)

ISO 21987:2017 Ophthalmic optics — Mounted spectacle lenses
ISO 9342-1:2005 Optics and optical instruments — Test lenses for calibration of focimeters — Part 1: Test lenses for focimeters used for measuring spectacle lenses
ISO 8980-1:2017 Ophthalmic optics — Uncut finished spectacle lenses — Part 1: Specifications for single-vision and multifocal lenses
ISO 9801:2009 Ophthalmic instruments — Trial case lenses
ISO 13666:2012 Ophthalmic optics Spectacle lenses Vocabulary
ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
ISO 8980-2:2017 Ophthalmic optics — Uncut finished spectacle lenses — Part 2: Specifications for power-variation lenses
ISO 7944:1998 Optics and optical instruments — Reference wavelengths
ISO 18369-3:2017 Ophthalmic optics — Contact lenses — Part 3: Measurement methods
ISO/TR 28980:2007 Ophthalmic optics Spectacle lenses Parameters affecting lens power measurement
ISO 8429:1986 Optics and optical instruments Ophthalmology Graduated dial scale

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