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Optical constants of SCHOTT - LaF (Lanthanum flint)
N-LAF21

Wavelength: µm
 (0.334 – 2.5)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.87134529λ^2}{λ^2-0.0093332228}+\frac{0.25078301λ^2}{λ^2-0.0345637762}+\frac{1.22048639λ^2}{λ^2-83.2404866}$$

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: 3.11e-06 1.13e-08 -2.07e-11 5.88e-07 6.32e-10 0.199
n_d: 1.788
V_d: 47.49
glass_code: 788475.428
glass_status: standard
density: 4.281 g/cm3
coefficient_of_thermal_expansion_1: 5.99e-06 K-1
coefficient_of_thermal_expansion_2: 7.08e-06 K-1
ΔP_gF: -0.0084
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 51.3
alkali_resistance: 1.0
phosphate_resistance: 1.3

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