I.S. EN 2155-7:1998
Current
The latest, up-to-date edition.
Hardcopy , PDF
English
01-01-1998
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.
Defines the method for determining the optical deviation caused to a beam of light passing through a transparent element material perpendicular to the optical axis of the system.
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