TS ISO 9802

TS ISO 9802 is a terminology standard that standardises the technical language used for raw optical glass. It provides a common framework for the terms and definitions used for the raw form of glass intended for optical applications, together with the related manufacturing concepts. Such vocabularies help prevent the same term from being interpreted differently across plants, laboratories, or commercial documents.

Technical context of raw optical glass

Raw optical glass is an intermediate material used to produce lenses, prisms, filters, and other optical components. In optical applications, the key concerns are not only chemical composition but also homogeneity, purity, colour, internal defects, and processability. For that reason, terminology matters: it separates material categories, manufacturing stages, and quality-related concepts that might otherwise be confused. In general technical terms, optical-glass production involves melting, shaping, cooling, and preparing the material for further processing.

What this standard covers

• Terms and definitions for raw optical glass.
• Concepts linked to manufacturing processes related to raw optical glass.
• A shared vocabulary for the optical-glass industry.
• Support for consistent use in technical communication, catalogues, specifications, and production documents.

Rather than setting a test method, numerical tolerance, or performance limit, the standard focuses on defining concepts. Its purpose is therefore terminological consistency, not measurement verification. This edition of TS ISO 9802 was based on ISO 9802:1996 and has since been withdrawn.