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Optical constants of SCHOTT - FK (Fluorite crown)
N-FK58

Wavelength: µm
 (0.26 – 2.5)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{0.738042712λ^2}{λ^2-0.00339065607}+\frac{0.363371967λ^2}{λ^2-0.0117551189}+\frac{0.989296264λ^2}{λ^2-212.842145}$$

Comments

XLD glass

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: -2.05e-05 -6.33e-09 4.13e-11 3.84e-07 1.63e-10 0.073
n_d: 1.456
V_d: 90.9
glass_code: 456909.365
glass_status: standard
density: 3.646 g/cm3
coefficient_of_thermal_expansion_1: 1.367e-05 K-1
coefficient_of_thermal_expansion_2: 1.572e-05 K-1
ΔP_gF: 0.0438
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 52.3
alkali_resistance: 3.3
phosphate_resistance: 4.3

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.

External links