ASTM F2429-15(2021)

1.1 These definitions cover generic optical terms which appear in one of more standards relating to aerospace transparent materials and enclosures.

1.2 The definitions cover, in most cases, special meanings used in the transparency industry. No attempt has been made to include common meanings of the same terms as used outside of the transparency industry.

1.3 Definitions included have, in general, been approved as standard.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.