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Some needs for the characterization of the dispersive properties of transmissive-optical materials

An overview of refractometry at The National Institute of Standards and Technology (NIST) from the turn of the century until 1980 is presented as an introduction and comparison to the needs for optical-material characterization in the 1990s. The current needs, as expressed by the developers and manufacturers of transmissive-optical materials and designers of high- resolution optical systems, are reviewed. The feasibility of meeting these needs is discussed.