DS DS/EN ISO 11715-1
DS DSEN SO 11715-1 1998-OCT-02 Ophthalmc optcs - Format of dgtal data fles for data transfer for proflng of spectacle lenses - Part 1 Two-dmensonal tracers
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This International Standard specifies the content and structure of electronic data encoding for two dimensional tracers. These data files are used to instruct electronically controlled formerless spectacle-lens profiling machinery.