Optical constants of CDGM - LAK (Lanthanum crown)
D-LAK70
Wavelength:
µm
(0.280 – 2.400)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.73281949-0.0114137973λ^{2}+0.0202755954λ^{-2}-0.000478308953λ^{-4}+0.000110158258λ^{-6}-5.30283301\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false λ_is_vacuum: false temperature: 20.0 °C coefficients_of_thermal_dispersion: 1.85e-06 2.21e-08 -1.31e-10 4.54e-07 5.36e-10 0.235 n_d: 1.669102 V_d: 55.402300 glass_code: 669554 density: 3.35 g/cm3 coefficient_of_thermal_expansion_1: 7.3e-06 K-1 coefficient_of_thermal_expansion_2: 9.1e-06 K-1 ΔP_gF: -0.006 climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)