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Optical constants of SCHOTT - LaF (Lanthanum flint)
N-LAF33

Wavelength: µm
 (0.32 – 2.5)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.79653417λ^2}{λ^2-0.00927313493}+\frac{0.311577903λ^2}{λ^2-0.0358201181}+\frac{1.15981863λ^2}{λ^2-87.3448712}$$

Comments

suitable for precision molding

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: 8.17e-06 1.24e-08 -1.65e-11 7.11e-07 8.59e-10 0.21
n_d: 1.78582
V_d: 44.05
glass_code: 786441.436
glass_status: standard
density: 4.36 g/cm3
coefficient_of_thermal_expansion_1: 5.6e-06 K-1
coefficient_of_thermal_expansion_2: 6.7e-06 K-1
ΔP_gF: -0.0071
climatic_resistance: 1.0
stain_resistance: 2.0
acid_resistance: 52.2
alkali_resistance: 1.0
phosphate_resistance: 3.0

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.

External links