Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF55
Wavelength:
µm
(0.350–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.73920103λ^2}{λ^2-0.00974400845}+\frac{1.16162575λ^2}{λ^2-111.118099}+\frac{0.279488106λ^2}{λ^2-0.0423325277}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.76e-06 1.53e-08 -4.05e-11 7.53e-07 5.1e-10 0.241
nd: 1.762000
Vd: 40.105472
glass_code: 762401
density: 4.3 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.2e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.5e-06 K-1
dPgF: -0.0027
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets