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Optical constants of SCHOTT - LaF (Lanthanum flint)
N-LAF2

Wavelength: µm
 (0.35 – 2.5)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.80984227λ^2}{λ^2-0.0101711622}+\frac{0.15729555λ^2}{λ^2-0.0442431765}+\frac{1.0930037λ^2}{λ^2-100.687748}$$

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: -3.64e-06 9.2e-09 -6e-12 6.43e-07 6.11e-10 0.22
n_d: 1.74397
V_d: 44.85
glass_code: 744449.430
glass_status: standard
density: 4.295 g/cm3
coefficient_of_thermal_expansion_1: 8.06e-06 K-1
coefficient_of_thermal_expansion_2: 9.1e-06 K-1
ΔP_gF: -0.0027
climatic_resistance: 2.0
stain_resistance: 3.0
acid_resistance: 52.2
alkali_resistance: 1.0
phosphate_resistance: 2.2

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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