Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF85LN
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.92017081λ^2}{λ^2-0.00961912018}+\frac{0.386379034λ^2}{λ^2-0.0389567822}+\frac{1.291166λ^2}{λ^2-97.9773368}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.18e-06 1.74e-08 -3.81e-11 8.61e-07 5.26e-10 0.215
nd: 1.845580
Vd: 40.094322
glass_code: 846401
density: 4.96 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.3e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.2e-06 K-1
dPgF: -0.006
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