ISO-7944 › Historical Revision Information
Optics & Optical Instruments - Reference Wavelengths
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This International Standard specifies two reference wavelengths to be used for the characterization of optical materials, optical systems and instruments, as well as ophthalmic lenses. It defines the associated principal refractive indices and principal dispersions, as well as the Abbe numbers with regard to these reference wavelengths and principal dispersions.
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17.180.01 (Optics and optical measurements in general)
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Document Number
ISO 7944:1998
Revision Level
2ND EDITION
Status
Current
Publication Date
June 1, 1998
Committee Number
ISO TC 172