Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF85L
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.516695305λ^2}{λ^2-0.0340497474}+\frac{1.81900011λ^2}{λ^2-0.00895670808}+\frac{1.42320717λ^2}{λ^2-110.045928}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.58e-06 1.63e-08 -3.37e-11 8.32e-07 7.24e-10 0.214
nd: 1.853700
Vd: 40.579411
glass_code: 854406
density: 5.28 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.3e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.7e-06 K-1
dPgF: -0.0081
climatic_resistance: 1.0
Comments
anneal rate:4°C/h
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets