Lens Description Standard v2.2 Revised 2018-01
This Standard addresses the need for an industry-wide data file structure and related terminology. It is for use by lens manufacturers in describing the technical attributes of lenses. Suppliers of laboratory management and processing software use this data for selecting and processing prescription lenses. Data describing the front surface geometry of non-spherical lenses is included to enable accurate control of lens thickness.
The purpose of this Standard is to:
Provide a consistent method and nomenclature for describing the specifications and attributes of both finished and semi-finished spectacle lens blanks as supplied by the lens vendor, and
Provide a consistent and precise method for describing the geometry of non-spherical lens surfaces, including aspheric and progressive, to ensure accurate control of lens thickness during processing.
Free Software Tools for Industry: