Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF50B
Wavelength:
µm
(0.300 – 2.400)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=3.07031881-0.0135921167λ^{2}+0.0258190179λ^{-2}-1.6644976\text{×}10^{-05}λ^{-4}+6.94966225\text{×}10^{-05}λ^{-6}-2.88382024\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false λ_is_vacuum: false temperature: 20.0 °C coefficients_of_thermal_dispersion: 2.55e-06 1.98e-08 -2.57e-13 4.22e-07 -1.44e-10 0.256 n_d: 1.772501 V_d: 49.613485 glass_code: 773496 glass_status: standard density: 4.24 g/cm3 coefficient_of_thermal_expansion_1: 5.8e-06 K-1 coefficient_of_thermal_expansion_2: 7.5e-06 K-1 ΔP_gF: -0.0097 climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)