GB/T 10050-2009Optics and optical instruments -- Reference wavelengths (English PDF)

2.1 General

Reference wavelength e-line 546.07nm mercury and helium d line 587.56nm. For non-use reference wavelength should ophthalmic mercury e-line. can Used as a reference wavelength other wavelengths are shown in Table 1, Table 2 and Table 3.

Note. In the future even for ophthalmic use only requires a reference wavelength.

Like e principal refractive index is the refractive index of the green mercury e line, the main dispersion is shaped like F'- C ', wherein. the shape F' blue cadmium F 'line refractive index, like C' red Color cadmium C 'line of refractive index.

The Abbe number and the main reference wavelength dispersion vp e according to equation (1).

Vp e = e-1-like shape F'- like C ' (1) D is a refractive index of principal refractive index like yellow helium d line, like the main dispersion F- C shape, wherein. F is the refractive index of the blue like hydrogen F line, C-shaped red the refractive index of hydrogen C line.

The main reference wavelength dispersion and Abbe number vp d according to equation (2).

Vp d = d-1-like shape C-shaped F-(2)

Table 1 and recommended reference wavelength in the visible wavelength range of the ultraviolet spectrum

The line used

UV mercury

Purple mercury

Blue Mercury

Blue cadmium

Blue Hydrogen

Green Mercury

Yellow helium

Cadmium red

Red hydrogen

Red helium

Elemental Hg Hg Hg Cd H Hg He Cd H He Wavelength/nm 365.01a 404.66 435.83 479.99 486.13 546.07 587.56 643.85 656.27 706.52 Reference wavelength /nm - - - - - 546.07 587.56 - - -Principal refractive index - - - - - shaped like e d - - -Hg using a singlet-triplet.

Table 2 Recommended infrared spectral band wavelengths

Element rubidium Rb Cs cesium Hg Mercury Hg Mercury Hg Mercury Hg Mercury Hg Mercury Hg Mercury Hg mercury Wavelength/nm 780.0 852.11a 1013.98b 1128.66 1395.1 1529.6 1813.1 1970.1 2325.4 a cesium s;

b Mercury g.

GB/T 10050-2009/ISO 7944:1998