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Optical constants of SCHOTT - SK (Dense crown)
N-SK4

Wavelength: µm
 (0.334 – 2.5)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.32993741λ^2}{λ^2-0.00716874107}+\frac{0.228542996λ^2}{λ^2-0.0246455892}+\frac{0.988465211λ^2}{λ^2-100.886364}$$

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

Additional information

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 7.96e-07 1.3e-08 -1.31e-11 4.36e-07 6.01e-10 0.179
n_d: 1.61272
V_d: 58.63
glass_code: 613586.354
glass_status: standard
density: 3.535 g/cm3
coefficient_of_thermal_expansion_1: 6.46e-06 K-1
coefficient_of_thermal_expansion_2: 7.38e-06 K-1
ΔP_gF: -0.0004
climatic_resistance: 3.0
stain_resistance: 1.0
acid_resistance: 51.2
alkali_resistance: 2.0
phosphate_resistance: 2.0

References

1) SCHOTT optical glass data sheets 2015-07-22
2) SCHOTT Zemax catalog 2015-07-22

More info - wiki

SCHOTT AG is a German glass manufacturer. SCHOTT also publishes a glass catalog (SCHOTT Optical Glass Datasheets), which is a standard reference for the properties of many optical glasses.

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