Identically adopts ISO 18526 1:2020, specifying the reference test methods for determining the spherical, cylindrical, and prismatic refractive power properties of unmounted and mounted plano lenses (non-corrective lenses) for eye and face protectors. Does not apply to any eye and face protection product requirement standards for which other test methods are specified.
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Preparatory information
5 General test requirements
6 Geometrical optical test methods
6.1 Test method for refractive power and prismatic power for plano lenses
6.1.1 Principle
6.1.2 Apparatus
6.1.2.1
6.1.2.2
6.1.2.3
6.1.3 Calibration of the apparatus
6.1.4 Procedure
6.1.4.1 General
6.1.4.2 Spherical and cylindrical power
6.1.4.3 Prismatic power for unmounted lenses covering one eye
6.1.4.4 Test report
6.2 Test method for the prism imbalance of complete eye protectors or lenses covering both eyes
