[国外标准] BS 2738-3-2004 Spectacle lenses
[国外标准] BS 2738-1-1998 Spectacle lenses
[国外标准] JIS B7106-1997 Photographic lenses-F-number marking
[国外标准] JIS B7095-1997 Photographic lenses-Methods for the measurement of the effective aperture, F-number a
[国外标准] JIS B7094-1997 Photographic lenses-Measurement of the focal length
[国外标准] JIS T0701-2005 Contact lenses and contact lens care products -- Vocabulary -- Part 1：Contact lenses