Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK6A
Wavelength:
µm
(0.302–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.13018444λ^2}{λ^2-81.4541493}+\frac{1.60589λ^2}{λ^2-0.00817222723}+\frac{0.207868982λ^2}{λ^2-0.030380314}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 2.73e-06 1.81e-08 4.81e-11 6.35e-07 -7.14e-10 0.117 nd: 1.693500 Vd: 53.380441 glass_code: 694534 density: 3.59 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 5.6e-06 K-1 - temperature_range: 20 300 °C coefficient: 7.3e-06 K-1 dPgF: -0.0082 climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets