Whether intended for use in laboratory optical systems, military, or space applications, most coated optical elements must adhere to some level of quality assurance standards or specifications. The parameters to be specified and test procedures for those parameters are presented. The emphasis is on spectral, environmental, and durability specifications. Military standards and specifications which apply to coating quality levels are discussed. Topics covered include the types of equipment and facilities required to evaluate coating performance spectrally and environmentally. Also included is a brief discussion of special requirements which may be devised for special coating applications and the associated special test procedures necessary. Finally, the problems associated with applying the military specifications and tests designed for visual optics to current state-of-the-art infrared optical components are presented. The need for new requirements and test procedures is discussed.
Roger A. West,
"Coatings - Quality Assurance Standards And Specifications", Proc. SPIE 0050, Optical Coatings: Applications and Utilization I, (1 March 1974); doi: 10.1117/12.954116; https://doi.org/10.1117/12.954116