Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF76
Wavelength:
µm
(0.360 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.279518569λ^2}{λ^2-0.0593856526}+\frac{2.01429741λ^2}{λ^2-0.012625744}+\frac{1.5507336λ^2}{λ^2-100.032291}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: -8.76e-07 1.45e-08 -5.38e-11 7.77e-07 8.1e-10 0.291
nd: 1.850130
Vd: 30.055517
glass_code: 850301
density: 3.98 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 6.8e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 8.3e-06 K-1
dPgF: 0.0056
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets