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Optical constants of SCHOTT - Obsolete glasses
N-FK51

Wavelength: µm
 (0.29 – 2.5)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{0.971247817λ^2}{λ^2-0.00472301995}+\frac{0.216901417λ^2}{λ^2-0.0153575612}+\frac{0.904651666λ^2}{λ^2-168.68133}$$

Comments

was replaced by N-FK51A

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: -1.83e-05 -7.89e-09 -1.63e-12 3.74e-07 3.46e-10 0.15
n_d: 1.48656
V_d: 84.47
glass_code: 487845.366
glass_status: preferred
density: 3.66 g/cm3
coefficient_of_thermal_expansion_1: 1.33e-05 K-1
coefficient_of_thermal_expansion_2: 1.549e-05 K-1
ΔP_gF: 0.0342
climatic_resistance: 2.0
stain_resistance: 0.0
acid_resistance: 52.3
alkali_resistance: 2.2
phosphate_resistance: 4.3

References

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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