Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF76A
Wavelength:
µm
(0.360 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{2.00079286λ^2}{λ^2-0.012959987}+\frac{1.53020671λ^2}{λ^2-131.107483}+\frac{0.289955307λ^2}{λ^2-0.057737977}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.09e-06 1.67e-08 -4.15e-11 1.04e-06 1.1e-09 0.255
nd: 1.850130
Vd: 30.012319
glass_code: 850300
density: 4.31 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 6.4e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 7.6e-06 K-1
dPgF: 0.0052
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets