Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF6LA
Wavelength:
µm
(0.320–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.12023521λ^2}{λ^2-0.00335766705}+\frac{0.897573526λ^2}{λ^2-0.0227710735}+\frac{1.3665486λ^2}{λ^2-92.0376324}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.32e-06 1.59e-08 -1.31e-11 6.18e-07 3.24e-10 0.187
nd: 1.757000
Vd: 47.711817
glass_code: 757477
density: 4.06 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.7e-06 K-1
- temperature_range: 20 300 °C
coefficient: 6.9e-06 K-1
dPgF: -0.0088
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets